GOST 7801 81 bolt furniture analog din. Non-compliance with the standard is punishable by law

BOLTS WITH INCREASED SEMI-ROUND
HEAD AND MUSTache
ACCURACY CLASS C

Design and dimensions

Increased cup nibbed head bolts, product grade C.
Construction and dimensions

GOST
7801-81

Instead
GOST 7801-72

Nominal thread diameterd

Head diameter D

Head height k

Sphere Radius R»

Mustache height W, not less

Thread length b

For l£ 120

For l> 120

Bolt length l, mm

Theoretical weight 1000 pcs. bolts, kg, with nominal thread diameterd, mm

6,501

7,346

14,34

8,191

15,88

27,16

9,035

17,42

29,87

46,53

90,15

9,880

18,95

32,32

50,08

96,67

10,725

20,48

34,76

53,62

103,20

11,570

22,03

37,20

57,16

109,73

188,2

12,415

23,57

39,64

60,70

116,25

198,5

13,260

25,11

42,08

64,24

122,78

208,7

14,105

26,65

44,53

67,78

129,31

219,0

14,950

28,19

46,97

71,32

135,83

229,2

15,795

29,73

49,41

74,86

142,36

239,5

17,484

32,80

54,30

81,94

155,42

259,9

19,174

35,89

59,19

89,01

168,47

280,4

38,97

64,06

96,09

181,52

300,9

42,04

68,95

103,17

194,58

321,3

45,12

73,83

110,25

207,63

341,8

48,20

78,72

117,33

220,69

362,3

51,28

83,60

124,41

233,74

382,7

88,49

131,49

246,79

403,2

93,37

138,57

259,85

422,9

98,25

145,65

272,90

443,4

103,14

152,73

285,95

463,8

108,02

159,81

299,01

STATE STANDARD OF THE UNION OF THE SSR

BOLTS WITH INCREASED SEMI-ROUND
HEAD AND MUSTache
ACCURACY CLASS C

GOST 7801-81

USSR STATE COMMITTEE BY STANDARDS

Moscow

STATE STANDARD OF THE UNION OF THE SSR

from 01.01.82

until 01.01.97

Non-compliance with the standard is punishable by law

1. This standard applies to bolts with an enlarged semicircular head and a mustache of accuracy class C with a nominal thread diameter from 6 to 20 mm. 2. The design and dimensions of the bolts must correspond to those indicated in the drawing and in table. 1 and 2.

Table 1

Bolt M 12 ´ 60 .36 .016 GOST 7801 -81

table 2

APPENDIX

Reference

Edition with Amendments No. 1,2, approved in June 1986, April 1987 (IUS 9-86, 8-87).

By the Decree of the State Committee of the USSR on Standards dated January 15, 1981 No. 3, the introduction date was set

01.01.82

The validity period was lifted according to protocol No. 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

1. This standard applies to bolts with an enlarged semicircular head and a mustache of accuracy class C with a nominal thread diameter from 6 to 20 mm.

2. The design and dimensions of the bolts must correspond to those indicated in the drawing and in table. 1 and 2.

Table 1

An example of a symbol for a bolt with a thread diameter d= 12 mm, coarse pitch with 8g tolerance, length l= 60 mm, strength class 3.6, 6 µm zinc plated with cathodic reduction, chromated:

table 2

Notes:

1. Bolts are made with lengths enclosed between bold lines.

2. Bolts in the area from the upper bold line to the dotted line are made with a mustache thread

1, 2.(Revised edition, Rev. No. 1).

(Changed edition, Rev. No. 1, 2).

3b. Tolerances and methods for controlling dimensions and deviations in the shape and location of surfaces - according to GOST 1759.1-82.

By agreement between the manufacturer and the consumer, it is allowed to manufacture bolts with a thread tolerance field of 6e.

3c. Surface defects and control methods - according to GOST 1759.2-82.

3a - 3c. (Introduced additionally, Amendment No. 1).

4. Diameter of the smooth part of the rod d 1 is approximately equal to the average thread diameter or equal to the nominal thread diameter.

5. Technical requirements - according to GOST 1759.0-87.

The mechanical properties of the bolts must comply with property classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Revised edition, Rev. No. 1).

6. Theoretical bolt weights are listed in the reference appendix.

APPENDIX
Reference

GOST 7801-81

Group G31

INTERSTATE STANDARD

PAN HEAD BOLTS
ACCURACY CLASS C

Design and dimensions

Increased cup nibbed head bolts, product grade C.
Construction and dimensions

ISS 21.060.10
OKP 12 8200

Introduction date 1982-01-01

By the Decree of the State Committee of the USSR for Standards dated January 15, 1981 N 3, the date of introduction was set to 01.01.82

The validity period was removed according to protocol N 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

INSTEAD OF GOST 7801-72

EDITION with Changes N 1, 2, approved in June 1986, April 1987 (IUS 9-86, 8-87).

1. This standard applies to bolts with an enlarged semicircular head and a mustache of accuracy class C with a nominal thread diameter from 6 to 20 mm.

2. The design and dimensions of the bolts must correspond to those indicated on the drawing and in tables 1 and 2.

Table 1

An example of a symbol for a bolt with a thread diameter of 12 mm, with a coarse thread pitch with a tolerance field of 8, a length of 60 mm, a strength class of 3.6, with a zinc coating, 6 µm thick, applied by the cathodic recovery method, chromated:

Bolt M12x60.36.016 GOST 7801-81

table 2

Notes:

1. Bolts are made in lengths enclosed between bold lines.

2. Bolts in the area from the upper bold line to the dotted line are made with a mustache thread.


1, 2. (Changed edition, Rev. N 1).

3. Thread - according to GOST 24705-2004, thread pitch - large. Runaway and undercut thread - according to GOST 27148-86. Bolt ends - according to GOST 12414-94.

(Changed edition, Rev. N 1, 2).

3a. The radius under the head - according to GOST 24670-81.

3b. Tolerances and methods for controlling dimensions and deviations in the shape and location of surfaces - according to GOST 1759.1-82.

By agreement between the manufacturer and the consumer, it is allowed to manufacture bolts with a thread tolerance field of 6e.

3c. Surface defects and control methods - according to GOST 1759.2-82.

3a-3c. (Introduced additionally, Rev. N 1).

4. The diameter of the smooth part of the rod is approximately equal to the average thread diameter or equal to the nominal thread diameter.

5. Technical requirements - according to GOST 1759.0-87.

The mechanical properties of the bolts must comply with property classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Changed edition, Rev. N 1).

6. The theoretical weight of the bolts is given in the appendix.

APPENDIX (reference)

APPENDIX
Reference

Electronic text of the document
prepared by CJSC "Kodeks" and checked against:
official publication
Bolts. Specifications.
Design and dimensions: Sat. standards. -
M.: Standartinform, 2006

GOST 7801-81

INTERSTATE STANDARD

BOLTS WITH INCREASED PONNEL HEAD WITH A HARNESS CLASS C

CONSTRUCTION AND DIMENSIONS

Official edition

INTERSTATE STANDARD

BOLTS WITH LONGER HEAD HEAD AND SHUTTER, ACCURACY CLASS C

Design and dimensions

Increased cup nibbed head bolts, product grade C. Construction and dimensions

GOST 7801-72

MKS 21.060.10 OKP 12 8200

By the Decree of the State Committee of the USSR on Standards dated January 15, 1981 No. 3, the introduction date was set

The validity period was lifted according to protocol No. 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

1. This standard applies to bolts with an enlarged semicircular head and a mustache of accuracy class C with a nominal thread diameter from 6 to 20 mm.

2. The design and dimensions of the bolts must correspond to those indicated in the drawing and in table. 1 and 2.

Table 1 mm

Official Edition ★

Reprint prohibited

An example of a symbol for a bolt with a thread diameter d = 12 mm, with a coarse thread pitch with a tolerance of 8 g, length / = 60 mm, strength class 3.6, zinc coated, 6 µm thick, applied by cathodic recovery, chromated:

Bolt М12-60.36.016 GOST 7801-81

Table 2mm

Notes:

1. Bolts are made in lengths enclosed between bold lines.

2. Bolts in the area from the upper bold line to the dotted line are made with a mustache thread.

1, 2. (Changed edition, Rev. No. 1).

3. Thread - according to GOST 24705-2004, thread pitch - large. Thread run and undercut - according to GOST 27148-86. Bolt ends - according to GOST 12414-94.

(Changed edition, Rev. No. 1, 2).

Behind. The radius under the head - according to GOST 24670-81.

36. Tolerances and methods for controlling dimensions and deviations in the shape and location of surfaces - according to GOST 1759.1-82.

By agreement between the manufacturer and the consumer, it is allowed to manufacture bolts with a thread tolerance field of 6e.

Sound Surface defects and control methods - according to GOST 1759.2-82.

Per-Sound (Introduced additionally, Amendment No. 1).

4. The diameter of the smooth part of the rod d t is approximately equal to the average thread diameter or equal to the nominal thread diameter.

5. Technical requirements - according to GOST 1759.0-87.

Mechanical properties of bolts must comply with strength classes 3.6, 4.6, 4.8, 5.6

(Revised edition, Rev. No. 1).

6. The theoretical weight of the bolts is given in the appendix.

APPENDIX

Reference