GOST 1759.0-87. Bolts, screws, studs and nuts. Technical conditions.

GOST 1759.0-87Group G31

INTERSTATE STANDARD BOLTS, SCREWS, STUDS AND NUTS Specifications Bolts, screws, studs and nuts.Specifications

MKS 21.060.10OKP 12 8200, 12 8300, 12 8400

Date of introduction 1989-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the USSR Ministry of Ferrous Metallurgy

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated December 30, 1987 N 5111

3. The standard fully complies with ST SEV 4203-83

4. INSTEAD GOST 1759-70 (regarding technical requirements and marking of fasteners)

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

Designation of the referenced technical documentNumber of section, paragraph, application
GOST 9.301-862.3.3
GOST 9.302-884.8
GOST 9.303-842.3.1; 2.3.2
GOST 9.306-852.3.1, Appendix 1
GOST 1759.1-821.2; 4.4
GOST 1759.2-822.1.2; 4.2
GOST 1759.3-832.1.3; 4.3
GOST 1759.4-872.2.1; 3.2; 4.9; 4.10
GOST 1759.5-872.2.3; 3.2; 4.11; 4.12
GOST 4784-97Annex 1
GOST 5632-722.2.5
GOST 5916-702.2.4
GOST 9378-934.6
GOST 12920-672.2.5
GOST 15527-20042.2.5
GOST 16030-704.5
GOST 16093-20041.2
GOST 17473-80Annex 1
GOST 17769-833.1
GOST 18160-725
GOST 18175-782.2.5
GOST 20072-742.2.4
GOST 24705-2004Introductory part
GOST 25556-822.2.2

6. The validity period was lifted according to Protocol No. 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

7. EDITION with Amendment No. 1, approved in October 1989 (IUS 2-90)

This standard applies to bolts, screws, studs and nuts with metric threads in accordance with GOST 24705-2004 with a diameter from 1 to 48 mm.

MAIN PARAMETERS AND DIMENSIONS

1.1. The design, dimensions and surface roughness of bolts, screws, studs and nuts are established in product standards.

1.2. Tolerances for the dimensions, shape and location of the surfaces of bolts, screws, studs and nuts are in accordance with GOST 1759.1-82. The main thread deviations should be assigned according to GOST 16093 depending on the required coating thickness. Thread tolerance fields are indicated for uncoated products. After coating, the thread requirements are in accordance with GOST 16093.

(Changed edition, Amendment No. 1).

1.3. At the request of the consumer, it is allowed to produce bolts, screws and studs with an increased or decreased length of the threaded part.

1.4. By agreement between the manufacturer and the consumer, it is allowed to produce: bolts, studs and nuts with left-hand threads; bolts with one locking hole in the head.

1.5. Permissible deviations of shape from those established in the standards for the design of bolts, screws, studs and nuts of all accuracy classes must correspond to those specified in Appendix 5.

Fastener coatings

In accordance with GOST 1759.4-87, coatings and oxide films are provided for fasteners (see Table 2). The choice of coating type for a particular material is carried out in accordance with GOST. The thickness of the coatings δ (set by agreement) is selected depending on the thread pitch within the following limits:

  • at fastener thread pitch P
  • with an average fastener thread pitch P = 0.4 ... 0.8 mm, the thickness of its coating is δ = 6 ... 9 μm;
  • with a large thread pitch of fasteners P > 0.8 mm, the coating thickness should be δ = 9 ... 12 µm.

Coatings of GOST fasteners must correspond to those specified in Table 2.

Table 2. Types of fastener coatings according to GOST

DesignationCoatingOperating temperature, t °C, no more
00Uncoated fasteners
01Chromated zinc plated fasteners300
02Cadmium plated with chromated fasteners200
03Multi-layer copper-nickel coating of fasteners600
04Multilayer copper-nickel-chrome600
05Oxide coating of fasteners200
06Phosphate oil-coated coating of fasteners200
07Tin plated fasteners150
08Copper plating fasteners600
09Zinc coating of fasteners (galvanized fasteners)200
10Oxide anodizing coating of fasteners with chromate plating200
11Oxide coating of fasteners made from acidic solutions200
12Silver plated fasteners600
13Nickel plated fasteners900

TECHNICAL REQUIREMENTS

2 1. Appearance

2.1.1. The surface of bolts, screws, studs and nuts must be clean, without traces of corrosion or mechanical damage.

2.1.2. Allowable surface defects of bolts, screws and studs are in accordance with GOST 1759.2.

2.1.3. Allowable surface defects of nuts are in accordance with GOST 1759.3.

2.2. Mechanical properties and materials

2.2.1. Mechanical properties of bolts, screws (except for mounting screws) and studs made of carbon unalloyed and alloyed steels are in accordance with GOST 1759.4.

2.2.2. Mechanical properties of set screws and similar non-tensile fasteners made of carbon unalloyed and alloyed steels - in accordance with GOST 25556.

2.2.3. Mechanical properties of nuts made of carbon unalloyed and alloyed steels are in accordance with GOST 1759.5-87.

2.2.4. Mechanical properties of bolts, screws, studs and nuts made of corrosion-resistant, heat-resistant, heat-resistant and heat-resistant steels, as well as recommended steel grades - according to Tables 1 and 2.

Table 1

Mechanical properties of bolts, screws and studs made of corrosion-resistant, heat-resistant, heat-resistant and heat-resistant steels at normal temperature

Group symbolTensile strength σв, N/mm²Yield strength σв (σ0.2), N/mm²Relative elongation δ5, %Impact strength KCU, J/cm²Test load voltage σп, N/mm²Steel
No lessBrandStandard designation
2151019535Not regulated17512Х18Н10ТGOST 5632-72
12Х18Н9Т
10X17H13M2T
10Х17Н13МЗТ
06ХН28МДТ
22590345206031012Х13
08Х21Н6М2Т
23690540126048520Х13
14Х17Н2
2488054083048510Х11Н23ТЗМР
25735103066013Х11Н2В2МФ
25Х1МФ;GOST 20072
25Х2М1Ф
20Х1М1Ф1ТР
261080835105075007Х16Н6GOST 5632-72

table 2

Mechanical properties of nuts made of corrosion-resistant, heat-resistant, heat-resistant and heat-resistant steels at normal temperature

Group symbolTest load voltage σF, N/mm², not lessSteel
BrandStandard designation
2151012Х18Н10Т, 12X18H9TGOST 5632-72
10Х17Н13М2Т
10Х17Н13М3Т
06ХН28МДТ
2259012Х13
08Х21Н6М2Т
2369020Х13
14Х17Н2
2488010Х11Н23Т3МР
2513Х11Н2В2МФ
25Х1МФ, 25Х2М1ФGOST 20072
20Х1М1Ф1ТР
26108007Х16Н6GOST 5632-72

2.2.5. Mechanical properties of bolts, screws, studs and nuts made of non-ferrous alloys, as well as recommended grades of alloys - Tables 3 and 4.

Table 3

Mechanical properties of bolts, screws, studs of non-ferrous alloys at normal temperature

Group symbolTensile strength σв, N/mm²Yield strength σв, (σ0.2), N/mm²Relative elongation δ5, %Brinell hardness HBGrade of material or alloyStandard designation
No less
3126012015Not regulatedAMg5PGOST 4784-97
AMg5
32310Not regulated1275Brass L6Z,GOST 15527-2004
Brass LS59-1GOST 12920-67
33Brass LS59-1 antimagnetic
Brass L63 antimagnetic
34490Not regulatedBronze Br. AMts9-2 GOST 18175
3537019510D1, D1P, D16, D16PGOST 4784-97

Table 4

Mechanical properties of nuts made of non-ferrous alloys at normal temperature

Group symbolTest load voltage σF, N/mm², not lessGrade of material or alloyStandard designation
31260AMg5P, AMg5GOST 4784-97
32310Brass LS59-1,L63GOST 15527-2004, GOST 12920-67
33Brass L63 antimagnetic
Brass LS59-1 antimagnetic
34490Bronze Br. AMts 9-2 GOST 18175
35370D1, D1P, D16, D16PGOST 4784-97

2.2.6. It is allowed to manufacture bolts, screws, studs and nuts from materials and alloys not specified in Tables 1-4. Moreover, their mechanical properties must not be lower than those specified for the corresponding groups.

2.2.7. At the request of the consumer, brass fasteners made by cold heading must be subjected to heat treatment to relieve internal stresses.

2.3. Coatings

2.3.1. Bolts, screws, studs and nuts must be manufactured with one of the types of coatings according to Table 5 or without coatings.

Table 5

Type of coverageCoverage designation
according to GOST 9.306-85digital
Zinc, chromatedC. hr01
Cadmium, chromatedKd. xp 02
Multilayer: copper-nickelM. N03
Multilayer: copper-nickel-chromeM. N. X. b04
Oxidized, oil-impregnatedChem. Oks. prm 05
Phosphate, oil impregnatedChem. Phos. prm 06
TinABOUT07
CopperM08
ZincC09
Oxidic, filled with chromatesAn. Ok. NHR 10
Oxidic from acidic solutionsChem. Pass 11
SilverWed12
NickelN13

It is allowed to use other types of coatings - in accordance with GOST 9.303-84.

2.3.2. The choice of coating thickness is in accordance with GOST 9.303-84.

2.3.3. Technical requirements for coatings are in accordance with GOST 9.301.

2.4. Marking

2.4.1.General labeling rules

2.4.1.1. Bolts with a hexagonal head, screws with a cylindrical head and a hexagonal socket, studs and hexagonal nuts should be marked with the sign of the strength class (or material group) and the mark (trademark) of the manufacturer, and products with left-hand threads must additionally be marked with the sign of the left-hand thread.

The following are subject to mandatory marking:

  • hex head bolts of strength classes 4.6, 5.6, 6.6, 8.8, 9.8, 10.9, 12.9;
  • cylindrical head screws with hexagonal socket and studs of strength classes 8.8, 9.8, 10.9, 12.9;
  • nuts of strength classes 05, 8, 9, 10, 12.

(Changed edition, Amendment No. 1).

2.4.1.2. Products not specified in clause 2.4.1.1 and of unspecified strength classes, as well as products made by cutting, are marked by agreement between the manufacturer and the consumer.

2.4.1.3. Marking marks can be convex or recessed.

2.4.1.4. When marking strength classes, it is allowed not to put a dot separating the first and second numbers of the strength class sign.

When low-carbon martensitic steels are used for products of strength class 10.9, the strength class sign must be underlined: 10.9 or 109.

(Changed edition, Amendment No. 1).

2.4.1.5. The dimensions of the marking signs are set by the manufacturer.

2.4.2. Marking of hex bolts and socket head cap screws

2.4.2.1. Bolts and screws with thread diameter d ≥ 6 mm are subject to marking.

2.4.2.2. Marking marks are applied to the end or side surface of the head of a bolt or screw (Fig. 1). The marks on the side surface of the head should be recessed.

Damn.1

2.4.2.3. When marking with convex marks, it is allowed to increase the maximum maximum height of the head of a bolt or screw by:

  • 0.1 mm - for products with thread diameter d ≤ 8 mm;
  • 0.2 mm - for products with a thread diameter of 8 mm d ≤ 12 mm;
  • 0.3 mm - for products with thread diameter d > 12 mm.

2.4.3. Stud markings

2.4.3.1. Studs with thread diameter d ≥ 12 mm are subject to marking. It is allowed to mark studs with a thread diameter d ≥ 8 mm using substitute marks:

○ — for strength class 8.8;

+ - for strength class 9.8;

□ — for strength class 10.9;

△ - for strength class 12.9.

2.4.3.2. Marking marks are applied to the end of the nut end of the stud.

2.4.4. Hex nut markings

2.4.4.1. Nuts with thread diameter d ≥ 6 mm must be marked.

2.4.4.2. Marking marks are applied on one of the end surfaces. In technically justified cases, it is allowed to apply markings on the side surfaces of the nuts (Fig. 2). Signs must be in-depth.

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2.4.4.3. It is allowed to use dial markings for nuts (Fig. 3). In this case, the marking is applied on the chamfers with convex or recessed marks or on the end surface with recessed marks.

Strength class891012
Nut dial markings

Damn.3

2.4.5. Marking of bolts, studs and nuts with left-hand threads

2.4.5.1. The sign of a left-hand thread is an arrow indicating the direction of screwing in the bolts, studs and screwing in the nut.

2.4.5.2. The left-hand thread mark is applied on the end surface of the bolt head, on one of the end surfaces of the nut (Fig. 4a), and on the end of the nut end of the stud. In technically justified cases, it is allowed to apply a left-hand thread mark on the side surfaces of the nut and bolt heads (Fig. 4b). In this case, the signs must be in-depth.

2.4.5.3. The left-hand thread sign for bolts and nuts can be replaced by cuts on the edges of the hexagons (Fig. 4c).

Damn.4

Marking of bolts and nuts - complete explanation of all symbols

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Published: 09/02/2018

A bolt as a fastening product is a cylindrical rod with a thread and a head. It comes in different shapes - square, hexagonal and more complex configurations. But the principle of marking bolts is general. How to decipher it and apply it in practice is what we’ll talk about in this article.

Marking of fasteners is carried out in accordance with GOST No. 1759.0 from 1987, 18126 from 1994. However, letters on certain types of bolts are also applied according to other standards. For example, for foundation samples, GOST No. 24379.1 of 1980 is used.

Golf V key light on the instrument panel. insp.

Full

Explanations

There are 3 accuracy classes of fasteners. For bolts and nuts, this parameter is not indicated (position 2), since all of them, according to the standard, belong to category B. There are 4 design options. If the bolt is the first, then the number “1” is not indicated. Existing types of thread: Tr - trapezoidal, K - conical, M - metric. Its diameter and pitch are in “mm”. If it is traditional (right-wing), then this is implied. For left-hand threads, the symbol LH is indicated (position 6). The coating thickness (at position 12) is expressed in “µm”. With abbreviated labeling, only the most essential parameters are indicated. When simplified, the main characteristics are indicated - as a rule, length and cross-section. For example, 16 x 25.

What goes on the bolt head?

Arrow. If the thread is left-handed. For the right, traditional, marking is not provided. Strength class of metal (alloy). Options for the location of signs are shown in the table.

By type of steel

Carbon, for example - 8.8.

1 – shows the maximum load of the connection point (t/cm2). 2 (through a dot) – ratio of limits (yield/strength) x 10. Martensitic (with minimal carbon content). Likewise. To distinguish them from carbon ones, the designation is underlined. For example, 8.8. On some samples there may not be a dot between the numbers.

"Galvanization"

A2 – alloy grade. 70 – tensile strength.

Manufacturer's logo

The mark can be recessed or convex, and the size of the symbols is determined by the product manufacturer.

brat-msk.com

ACCEPTANCE

3.1. Rules for acceptance of bolts, screws, studs and nuts - according to GOST 17769.

3.2. Each batch of fasteners must be accompanied by a quality document indicating:

  • name or trademark of the manufacturer;
  • symbol of the product;
  • list and results of tests performed;
  • net mass of the batch;
  • means of temporary anti-corrosion protection and protection period.

Notes: 1. It is allowed to place a document on the quality of products in a container or container, and its safety during transportation must be ensured.

2. Before 01/01/92, the mandatory tests were:

  • according to GOST 1759.4 for strength classes 8.8-12.9, determination of tensile strength and determination of impact strength; for strength classes 4.8; 5.8; 6.8 test for the strength of the connection between the head and the rod;
  • according to GOST 1759.5-87 for strength classes 8-12 test load test.

Other tests are carried out at the request of the consumer.

(Changed edition, Amendment No. 1).

CONTROL METHODS

4.1. Inspection of the appearance of bolts, screws, studs and nuts should be carried out without the use of magnifying devices. In controversial cases, it is allowed to use a magnifying glass with a magnification of 2.5-3x.

4.2. Inspection of surface defects of bolts, screws and studs - in accordance with GOST 1759.2.

4.3. Control of surface defects of nuts - according to GOST 1759.3.

4.4. Control of the sizes of bolts, screws, studs and nuts - according to GOST 1759.1-82.

4.5. The bluntness of the corners of the square head should be checked in a control matrix with a square hole made according to the 1st row of GOST 16030. A flat washer with a hole with a diameter larger than the diameter of the circumscribed circle of the head and a thickness of 0.5 of the height of the head should be installed under the head of the bolt. Rotating the preparation in the hole of the control bushing or template is not allowed.

4.6. The surface roughness of bolts, screws, studs and nuts should be checked by comparison with roughness samples in accordance with GOST 9378-93. It is allowed to control surface roughness using measuring instruments. The surface roughness of products made by cold stamping and the roughness of the end of the rods, except for the set screws, are not controlled.

4.7. The roughness of the threads of bolts, screws and studs should be checked on the side surfaces of the profile. The roughness of threads obtained by knurling and the roughness of threads of nuts is not controlled and must be ensured by manufacturing technology and tools.

4.8. Methods for checking the quality and thickness of coatings are in accordance with GOST 9.302.

4.9. Test methods and testing programs for bolts, screws and studs made of carbon unalloyed and alloyed steels - in accordance with GOST 1759.4.

4.10. Testing of bolts, screws and studs made of corrosion-resistant, heat-resistant, heat-resistant and heat-resistant steels, as well as non-ferrous alloys, must be carried out at the request of the consumer in accordance with Table 6 according to the GOST 1759.4 method.

Table 6

Mechanical characteristicsType of testMaterial groups
2122, 23, 24, 25, 2631, 353432, 33
Temporary resistanceTensile testxxxxx
00000
Yield strengthTensile testxxx
Relative extensionTensile testxxxxx
Brinell hardnessHardness measurementx
0
Impact strengthImpact testx

0 - for bolts, screws and studs with thread d ≤ M5 and length > 3d;

x - for bolts, screws and studs with thread d > M5 and length ≥ 3d.

Breaking loads are given in Appendix 2, test loads - in Appendix 4.

Other tests on bolts, screws and studs are carried out by agreement between the manufacturer and the user.

(Changed edition, Amendment No. 1).

4.11. Test methods for nuts made of carbon unalloyed and alloyed steels - according to GOST 1759.5-87.

4.12. Testing of nuts made of corrosion-resistant, heat-resistant, heat-resistant and heat-resistant steels, as well as nuts made of non-ferrous alloys with a test load should be carried out at the request of the consumer according to the GOST 1759.5-87 method. Test loads are given in Appendix 3.

4.13. When manufacturing bolts, screws and studs by cutting, without subsequent heat treatment, it is allowed to test the mechanical properties on the original metal or samples made from it.

Description: Nuts GOST, OST, DIN

A nut is a threaded fastener with a hole designed to work in conjunction with a bolt, stud and screw. Characterized by the following main parameters:

  • diameter and thread pitch;
  • accuracy class;
  • height;
  • turnkey shape and size;
  • strength class;
  • the presence or absence of locking elements;
  • coating.

Although there are exclusive (original) nuts, the vast majority of them are produced according to GOSTs, OSTs, TUs or German DIN inherited from Soviet times, which are valid throughout the Eurozone.

Thread diameter and pitch

These are the main parameters of the nut. They determine its compatibility with the mating part. In fasteners, as a rule, metric threads are used, the profile of which has a triangular shape with an apex angle of 60°. The thread diameter is designated by the letter d, the thread pitch is P. Nuts with the same diameter can have different pitches. The largest of them is considered the main one.

According to GOST 8724-2002, the diameters of metric threads range from 0.25 to 600 mm, pitches from 0.075 to 8 mm. It is customary to distinguish between fasteners with a diameter from 1.6 to 48 mm and over 48 mm.

The symbol for a nut with a metric thread includes the letter M and two numbers separated by an “x” (which may or may not be present). The first indicates the thread diameter (d), the second indicates the pitch (P). If the second number is missing, it means the nut has a large pitch. For example, the designation “Nut M8x1” means that we have a product with a metric thread, 8 mm in diameter and 1 mm in pitch. If a product is marked “Nut M8”, this indicates that it has a large pitch (1.5 mm).

Threads can be right-handed or left-handed. In the latter case, the letters “LH” are added to the designation. For example, M8x0.75 – LH.

Class (degree) of accuracy

Determines the size of the gap that exists between the nut and the bolt, regulated by GOST 16093-81. The degree of accuracy of threaded parts is determined by two components.

  • Diameter tolerance, indicated by the numbers 4, 5, 6, 7 and 8. The larger the number, the smaller the tolerance and the higher the accuracy.
  • The position of the tolerance fields, which is designated by the letters E, F, G and H.

In the nut marking, the value of the position of the tolerance field follows the designation of the diameter tolerance. For example, M12-6N - indicates that this is a product with a diameter of 12 mm with a large pitch and an accuracy class of 6H.

Strength class

The strength of a nut (mainly its thread) depends not only on the material from which it is made, but also on the production technology, in particular heat treatment (usually hardening or normalizing). The load-bearing capacity of a threaded connection is also affected by the height of the nut (the number of working thread turns) and the pitch (the height of the thread profile).

The strength parameters of nuts are determined by GOST R 52628-2006. According to it, for products with normal or increased height (≥0.8d) and large pitch there are seven strength classes (4, 5, 6, 8, 9, 10, 12). For nuts with fine threads - five classes (5, 6, 8, 10, 12). For nuts with a height of 0.5d...0.8d. – 2 classes (04, 05).

The numbers indicating the class are the minimum value of the tensile strength of the bolt associated with the nut, divided by 100. That is. a nut with a strength class of 10 can reliably work in tandem with a bolt whose tensile strength is 1000 N/mm2.

GOST R 52628-2006 does not put forward requirements for the use of specific steel grades; it is limited only to indicating their mechanical properties and the content of certain (Mn, C, P, S) elements.

The most commonly used steel grades for nuts of a certain strength class:

  • class 4 – St3kp, St3sp;
  • class 5 – 10, 10kp, 20;
  • class 6 – St5, 15kp, 15, 35;
  • class 8 – 20kp, 20, 35, 45;
  • class 9 – 35Х, 40х, 39ХА;
  • class 10 – 40Х, 14Х17Н2, 16ХСН, 40ХГСА, 09Г2С;
  • class 12 – ZOKHGSA, 12Х18Н10Т, 20Х13, 40ХН2МА, ZOKHGSA.

The strength class is marked on the nut with the corresponding number or code symbol (mark), printed in a certain place along the dial system.

Height

Along with strength, it determines the load-bearing capacity of a threaded connection. Thread collapse, which occurs as a result of exceeding the permissible load or too frequent screwing-unscrewing operations, is the most common cause of failure of a threaded connection.

A normal height is considered to be 0.8d. The smaller it is, the fewer thread turns, the higher the load per thread. However, low nuts also have their advantages, the main one being compactness. Their release is regulated by special GOSTs - 5916-70, 10607-94, etc.

Nut shape

It determines the methods of wrapping, the type of tool, and sometimes the method of locking.

The vast majority of nuts are hexagonal in shape - for an open-end or socket wrench. The turnkey size for nuts of the same diameter can be standard or reduced. The production of hex nuts is regulated by a large number of GOSTs - 10607-94, 10605-94, 10608-72, 5915-70, 15522-70, 2524-70, 2528-73, etc.

Round nuts have holes or slots on the end or sides for special keys and/or locking elements. Produced in accordance with GOST 10657-80 (with splines on the end), GOST 11871-88 (with splines on the cylindrical surface), GOST 6393-73 (with holes on the end), etc.

The square shape is used less frequently. For screwing, regular open-end wrenches are used. Square nuts are regulated by DIN standards - 557, 562, etc.

Wing nuts (GOST 3032-76) have special ears for tightening by hand.

Cap nuts (GOST 11860-85) are closed on one side with a spherical surface. This is usually done for design reasons.

Locking elements

Spontaneous loosening of nuts is one of the main problems of threaded connections. There are many ways to combat it - using locknuts, applying polymer to the threads, using special washers and studs. The latter sometimes require special elements on the nut. For example, slots on the cylindrical surface of round nuts (GOST 11871-88, etc.), into which the antennae of the lock washers are bent. Or slots on the end surface - the so-called. castle nuts (GOST 5918-73, 5919-73, 5932-73, 5933-73). Locking pins pass through them and are threaded into the hole of the bolt or axle.

APPENDIX 1 (recommended). Symbol diagram for bolts, screws, studs and nuts

The symbol for bolts, screws, studs and nuts should be written according to the following scheme:

Examples of symbols for fasteners. Screw - according to GOST 17473, accuracy class A, version 2, thread diameter d=12 mm with fine thread pitch, with thread tolerance 6e, length l=60, strength class 5.8, made of mild steel with zinc coating 9 microns thick, chromated

Screw A2M12 x 1.25-6e x 60.58.S.019GOST 17473-80

Nut - according to GOST 5916-70 version 2, thread diameter d=12 mm, with fine thread pitch, left-hand thread, with a tolerance range of 6H, strength class 05, made of steel grade 40X, with a zinc coating 6 microns thick, chromated

Nut 2М12×1.25LH-6Н.05.40Х.016 GOST 5916-70

Notes:

1. The symbol does not indicate:

  • version 1, large thread pitch, right-hand thread, lack of coating, as well as parameters clearly defined by product standards;
  • accuracy class B, if the standard for a specific fastener provides for 2 accuracy classes (A and B).

2. If a coating not provided for by this standard is used, its designation is indicated in accordance with GOST 9.306-85.

Bolt GOST 7798-70 high-strength with hex head: bolt m6, m8, m10, m12, m16, m20, m24

Catalog / high-strength bolt GOST 7798-70: bolts m8, m10, m12, m16, m20, m24, m27, m30

Bolt GOST 7798-70 with a hexagonal head of accuracy class B with a thread diameter from 6 to 48 is most often used in mechanical engineering, industry and construction as connection parts.
The high-strength bolt GOST 7798-70 works reliably in aggressive environments, under high-temperature loads and at low temperatures. May have a thread with a fine or large pitch.

BSR bolts are used to secure parts of building structures, pipelines, and equipment to concrete, reinforced concrete and brick structures of buildings and structures.

The most widely used bolts are M6, M8, M10, M12, M16, M20, type 1. Types 2 and 3 are made to order.

The material for the manufacture of bolts in accordance with GOST 7798-70 using the cold heading method on machines with thread rolling uses steel wire with increased manufacturing precision. Requirements for wire diameter depend on the model of the press machine and the design of the bolt.

Hole bolts having a tensile strength of 800MPa and above are called high-strength. They perceive high static and dynamic stresses. The material for this fastener is 40X steel. It is used in metallurgy, in the chemical, pharmaceutical industries, for work in the Far North and in all cases where it is necessary to ensure high joint strength.

Bolt size range: bolt M6, M8, M10, M12, M16, M20, M24, M27, M30, M36, M42, M48, M52.

Bolt GOST 7798-70 is a foreign analogue of GOST 7805-70 or DIN 931, ISO 4014.

DIN 933 - full thread.

Bolt drawing GOST 7798 70:
Steel grade and main bolt dimensions. Bolt GOST 7798-70 m6, m8, m10, m12, m16, m20, m24 with hex head.

NTDGOST 7798-70
Size rangebolt M6 - M48
Accuracy classIN
Thread tolerance field6g
Strength class3.6 4.6 4.8 5.6 5.8 6.6 8.8 10.9
steel grade10kp 20kp 10,20,35 20G2R

Hex bolt GOST 7798-70. Buy a construction bolt.

dM8 boltM10 boltM12 boltM16 boltM20 boltbolt M22bolt M24M27 boltbolt M30
Thread pitch1,251,51,7522,52,5333,5
k5,36,47,51012,514151718,7
b*2226303846/5250/5654/6060/6666/72
S131719243032364146
e, min14,218,720,926,2303539,645,250,9
L20-7025-9025-9030-12050-15060-15060-15080-20080-200

Hex bolt GOST 7798-70. Bolt weight GOST 7798 70. Theoretical weight of 1000 pieces of bolts (in kg).

Length, mmTheoretical weight 1000 pcs. bolts kg with nominal thread diameter d
, mm
M6M8M10M12M14M16M18M20M22M24M27M30M36M42M48
84,3068,668
104,7129,39416,68
125,11810,12017,82
145,52410,85018,9627,89
165,93011,57020,1029,4843,98
186,33612,30021,2331,1246,2165,54
206,74213,02022,3732,7648,4568,4995,81
227,20413,52023,5134,4050,6971,4499,52
257,87114,84025,2236,8654,0575,87105,10133,3
288,53716,33026,9239,3257,4080,29110,60140,2
308,98117,12028,5240,9659,6483,24114,30144,8193,0
329,42617,91029,4342,5961,8786,19118,00149,4198,6237,0
3510,09019,09031,2845,3465,2490,62123,60156,3207,0246,9340,6
3810,76020,28033,1848,0068,5995,04129,20163,2215,4256,9353,3
4011,20021,07034,3649,7871,2597,99132,90167,8221,0263,5361,8474,8
4512,31023,04037,4554,2277,30105,70142,10179,4235,0280,1373,0500,9
5013,42025,02040,5358,6783,35113,60152,40190,9249,0296,7404,1526,9834,5
5514,53026,99043,6263,1189,39121,50162,40203,7263,1313,3425,3553,0872,11304
6015,64028,97046,7067,5595,44129,40172,40216,0278,9329,9446,5579,0909,81356
6516,76030,94049,7971,99101,50137,30182,40228,4293,8348,8467,7605,1947,414072009
7017,87032,91052,8776,44107,50145,20192,40240,7308,8366,5491,1631,1985,014582076
7518,98034,89055,9680,88113,60153,10202,40253,0323,7384,3513,6659,71023,015092143
8020,09036,86059,0485,33119,60161,00212,40265,0338,6402,1536,1687,51061,015612211
8521,20038,84062,1389,77125,70168,90222,40277,7353,6419,8558,6715,21098,016122278
9022,31040,81065,2194,20131,70176,80232,40290,1368,5437,6581,0743,01141,016632345
9542,79068,3098,64137,80184,70242,40302,4383,4455,4603,5770,81181,017152412
10044,76071,38103,10143,80192,60252,40314,7398,3473,2626,0798,51221,017662479
10574,47107,50149,90200,50262,40327,1413,3490,9648,5826,31261,018262546
11077,55112,00155,90208,40272,30339,4428,2508,7671,0854,11301,018802614
11580,63116,40162,00216,30282,30351,8443,1526,5693,5881,81341,019342690
12083,72120,90168,00224,20292,30364,1458,1544,2716,0909,61381,019892760
12586,80125,30174,00232,10302,30376,4473,0562,0738,5937,41421,020432831
13089,89129,70180,10240,00312,30388,8487,9579,8761,0965,21461,020982903
14096,06138,60192,20255,80332,30413,5517,8615,3806,01021,01541,022073045
150102,18147,50204,30271,60352,30438,1547,6650,8850,11076,01621,023153187
160108,38156,40216,40287,40372,30462,8577,5686,4895,91132,01701,024243329
170114,58165,30228,50303,20392,30487,5607,4721,9940,91188,01780,025333471
180120,68174,20240,60319,00412,30512,2637,2757,5985,91243,01860,026423614
190126,88183,10252,70333,80432,30536,9667,1793,01031,01299,01940,027513756
200133,08191,90264,70350,60452,20561,5697,0828,61076,01354,02020,028603898
220209,70228,90382,20492,20610,9756,7899,61166,01465,02180,030774182
240227,50313,10413,80532,20660,3816,4970,81256,01576,02340,032954466
260245,20337,60445,40572,20709,6876,11042,01346,01687,02500,035134751
280361,50476,90612,20759,0935,91113,01436,01798,02660,037305035
300385,70508,50652,20808,3995,61184,01526,01910,02820,039485319

The thread length indicated in the denominator is for bolts with a length greater than 120.

It is possible to supply high-strength bolts in accordance with GOST 7798-70 in sizes from M6 to M24, strength classes 8.8, 10.9, made of steel 20G2R.

Example of a symbol:

Bolt GOST 7798-70 version 1 with thread diameter d

=8 mm, with a turnkey size
S
=13 mm, length
l
=60 mm, with a large thread pitch with a tolerance range of
6g
, strength class 5.8, uncoated:

Bolt M8 - 6gx60.58 (S13) GOST 7798-70

Bolt 7798-70 version 2 with thread diameter d

=10 mm, with a turnkey size
S
=16 mm, with a fine thread pitch with a tolerance range of
6g
, strength class 10.9, made of steel grade 40X, with coating 01 6 microns thick:

Bolt 2М10х1.25 - 6gх60.109.40Х.016 GOST 7798-70

Bolt GOST 7798-70 version 3 with thread diameter d

=12 mm, with a turnkey size
S
=18 mm, length
l
=60 mm, with a large thread pitch with a tolerance range of
6g
, strength class 5.8, uncoated:

Bolt 3M12 - 6gx60.58 (S18) GOST 7798-70

Bolt 7798 version 1 with thread diameter d

=16 mm, with turnkey size
S
=24 mm, with fine thread pitch with a tolerance range of
6g
, strength class 10.9, made of steel grade 40X, with coating 01 6 microns thick:

Bolt M16x1.25 - 6gx60.109.40X.016 GOST 7798-70

Bolt GOST 7798 version 2 with thread diameter d

=20 mm, with a turnkey size
S
=30 mm, length
l
=60 mm, with a large thread pitch with a tolerance range of
6g
, strength class 5.8, uncoated

Bolt 2M20 - 6gx60.58 (S30) GOST 7798-70

Sale of bolts: M6, M8, M10, M12, M16, M20, M24, M27, M30, M36, M42, M48, M52 of various lengths from 0.05 tons.

How to buy bolts GOST 7798-70: bolts m8, m10, m12, m16, m20, m24 at low prices:

  • fill out the simple “Place an order” form at the top of the page;
  • call on the phone +7;
  • send your application by email;

Delivery of GOST 7798-70 bolts throughout the Russian Federation: Moscow, St. Petersburg, Arkhangelsk, Astrakhan, Barnaul, Belgorod, Bryansk, Vladimir, Volgograd, Vologda, Voronezh, Yekaterinburg, Ivanovo, Izhevsk, Yoshkar-Ola, Kazan, Kaluga, Kirov, Kostroma , Krasnodar, Kurgan, Kursk, Lipetsk, Omsk, Orenburg, Penza, Perm, Pskov, Rostov-on-Don, Ryazan, Samara, Saransk, Saratov, Sevastopol, Simferopol, Smolensk, Stavropol, Tambov, Tver, Tomsk, Tula, Tyumen , Ulyanovsk, Ufa, Chelyabinsk, Yaroslavl, etc.

The information presented on this website contains a catalog of reference information on more than 3,000 types of metal products, is for informational purposes only, and can be used in various areas of enterprise activity.

Steel wire Welding electrodes Steel rope FastenersMetal mesh Hex bolts Nut GOST, DIN Steel rivetsAdjustable cotter pins GOST, DIN washers Threaded rods Calibrated rolled productsSlings, rigging Construction nails Steel cable Screws GOST, DIN

APPENDIX 2 (mandatory)

Table 7

Minimum breaking loads for coarse pitch bolts, screws and studs

Nominal thread diameter d, mmThread pitch P, mmNominal cross-sectional areaAs, mm²Minimum breaking load, H, for group symbols
21222324; 25263132; 333435
40,78,78447051706050772094702280272042903240
50,814,272408380980012500153003690440069605250
6120,110300119001390017700217005230623098507440
7128,91470017000199002530031100750089001410010660
81,2536,618700216002530032200395009520113001790013500
101,558,0301003480040700519006370015100180002840021500
121,7584,3429004970058100741009090021900261004130031200
14211558700679007940010100012400029900357005640042600
162157801009260010800013800017000040800487007690058100
182,51929790011300013200016900020700049900525009410071000
202,5245125000145000169000216000265000637007600012000090700
222,5Z0Z1550001790002090002670003270007880093900148000112000
24335317600020800024300031000038000091500109000172000130000
273459234000271000317000404000496000119000142000225000170000
303,5561286000330000386000493000605000146000174000274000207000
333,5694353000410000478000610000748000180000215000340000256000
364817416000480000563000718000881000212000253000400000302000
3949764970005750006730008600001053000253500302000478000361000
424,511205710006610007730009860001210000291000347000549000414000
454,5130666600077000090100011500001410000339600405000640000483000
4851472751000868000102000013000001590000383000456000721000545000

Table 8

Minimum breaking loads for fine pitch bolts, screws and studs

Nominal thread diameter d, mmThread pitch P, mmNominal cross-sectional area As, mm²Minimum breaking load, H, for group symbols
21222324; 252632; 333435
8139,2199002310027000344004220010200121001920014500
101,2561,2312003610042200539006610015900190003000022600
121,2592,1469005430063500810009940023900285004510034000
141,512563200732008560010900013400032200384006080045900
161,5167852009850011500014700018000043400518008180061800
181,5216110000127000149000190000233000562006700010600079900
201,52721380001600001870002380002930007050084000133000100000
221,533317000019600023000029300036000086600103000163000123000
242384196000227000265000338000415000998000119000188000142000
272496252000292000342000436000535000129000153000243000183000
302621317000366000428000546000671000161000193000304000230000
332761388000449000525000670000822000198000236000373000282000
363865441000510000596000760000933000225000268000423000320000
39310305250006080007110009060001112000268000319000505000381000
423120561500071100083000010600001300000313000374000590000446000
453140071400082600096600012320001512000364000434000686000518000
4831603818000946000111000*14110001731000417000497000785000593000

* Corresponds to the original.

APPENDIX 3 (mandatory)

Table 9

Proof load for nuts with height m ≥ 0.8d and coarse thread pitch

Nominal thread diameter d, mmThread pitch P, mmCross-sectional area of ​​the mandrelAs, mm²Test load, H, for group symbols
222324; 25263132; 333435
1,60,351,2765075088011201370330390620470
20,42,07106012201430182022405406401010770
2,50,453,3917302000234029803660880105016601250
30,55,03257029703470443054301310156024601860
3,50,66,78345039904670596073101760210033202500
40,78,78447051706050772094702280272043003240
50,814,272408380980012500153003690440069605250
6120,110300119001390017700217005230623098507440
7128,91470017000199002530031100749089301410010700
81,2536,618700216002530032200395009520113001790013500
101,558,0296003420040000510006260015100180002840021500
121,7584,3492004970058100741009090021900261004130031200
142115587000679007940010100012400029900357005640042600
162157801009260010800013800017000040800487007690058100
182,51929790011300013200016900020700049900595009410071000
202,5245125000145000169000216000265000637007600012000090700
222,53031550001790002090002670003270007880093900148000112000
24335318000020800024300031000038000091500109000172000130000
273459234000271000317000404000496000119000142000225000170000
303,5561286000330000386000493000605000146000174000274000207000
333,5694353000409000478000610000748000180000215000340000256000
364817416000480000563000718000881000212000253000400000302000
3949764970005750006730008580001053000254000302000478000361000
424,511205710006610007730009860001210000291000347000549000414000
454,5130566600077000090000011480001409000339000405000640000483000
4851472751000868000101600012960001590000383000456000721000545000

Table 10

Test loads for nuts height m ≥ 0.8d with fine thread pitch

Nominal thread diameter d, mmThread pitch P, mmCross-sectional area of ​​the mandrelAs, mm²Test load, H, for group symbols
21222324; 25263132; 333435
8139,2199002310027000344004220010200121001920014500
10164,5329003810044500568006970016800200003160023900
101,2561,2312003610042200539006610015900190003000022600
121,2592,1469005430063500810009940023900285004510034000
121,588,1449005200060800775009510022900273004320032600
141,512563200732008560010900013400032200384006080045900
161,5167852009850011500014700018000043400518008180061800
181,5216110000127000149000190000233000562006700010600079900
182204104000120000141000180000220000530006320010000075500
201,52721380001000001870002380002930007050084000133000100000
202258132000152000178000227000279000671008000012600095500
221,533317000019600023000029300036000086600103000163000123000
2223181620001880002190002800003430008270098600156000118000
241,5401205000237000277000353000433000104000124000196000148000
24238419600032700026500033800041500099800119000188000142000
272496252000292000342000436000535000129000153000243000183000
302621317000366000428000546000671000161000193000304000230000
332761388000448000524000669000821000198000236000372000281000
363865441000510000596000760000933000225000268000423000320000
39310305240006070007090009050001105000266000317000501000379000
423120561500071100083100010600001301000313000374000590000446000
453139771200082400096400012290001509000363000433000685000517000
4831603818000946000112200014110001731000417000497000785000593000

APPENDIX 4 (mandatory)

Table 11

Test loads for coarse thread bolts, screws and studs

Nominal thread diameter d, mmThread pitch P, mmNominal cross-sectional areaAs, mm²Test load, H, for group symbols
212223; 242526
40,708,7815402720426057906590
50,8014,20249044006890937010700
61,0020,103520623097601330015100
71,0028,9050688960140001910021700
81,2536,60641011300178002420027500
101,5058,001020018000281003830043500
121,7584,301480026100409005560063200
142,00115,002010035700558007590086300
162,00157,00275004870076100104000118000
182,50192,00336005950093100127000144000
202,50245,004290076000119000162000184000
222,50303,005300093900147000200000227000
243,00353,0061800109000171000233000265000
273,00459,0080300142000223000303000344000
303,50561,0098000174000272000370000421000
333,50694,00121000215000337000458000521000
364,00817,00143000253000396000539000613000
394,00976,00171000303000473000644000732000
424,501120,00196000347000540000739000840000
454,501306,00229000405000633000862000980000
485,001472,002580004560007140009720001104000

Table 12

Test loads for bolts, screws and studs with fine threads

Nominal thread diameter d, mmThread pitch P, mmNominal cross-sectional areaAs, mm²Test load, H, for group symbols
212223; 242526
81,0039,2684012200190002580029400
101,2561,21070019000297004040045900
121,2592,11610028600447006080069000
141,50125,02190038800606008250093800
161,50167,0292005180081000110000125000
181,50216,03780067000105000143000162000
201,50272,04760084000132000179000204000
221,50333,058300103000162000220000250000
242,00384,067200119000186000253000288000
272,00496,086800154000241000327000372000
302,00621,0109000193000301000410000466000
332,00761,0133000236000369000502000571000
363,00865,0151000268000419000571000649000
393,001030,0180000319000500000680000773000
423,001205,0211000374000584000795000904000
453,001400,02450004340006790009240001050000
483,001603,028100049700077700010580001202000
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