Furniture bolt with a mustache GOST 7801 81. Bolts with an enlarged semicircular head and a mustache of accuracy class with

GOST 7801-81

Group G31

INTERSTATE STANDARD

BOLTS WITH EXTENDED SEMI-ROUND HEAD AND MUSTACLE
ACCURACY CLASS C

Design and dimensions

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

ISS 21.060.10
OKP 12 8200

Date of introduction 1982-01-01

Resolution State Committee USSR according to standards of January 15, 1981 N 3, the date of introduction is set to 01/01/82

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

INSTEAD GOST 7801-72

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

1. This standard applies to bolts with increased semicircular head and a whisker 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 tables 1 and 2.

Table 1


Nominal thread diameter
Head diameter
Head height
Sphere radius
Mustache height, not less
Thread length

Example symbol bolt with a thread diameter of 12 mm, with a large thread pitch with a tolerance range of 8, length 60 mm, strength class 3.6, with a zinc coating, 6 microns thick, applied by cathodic reduction, 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 threads to the point.

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

3. Thread - according to GOST 24705-2004, thread pitch - large. Runaway and undercut threads - according to GOST 27148-86. The ends of the bolts are in accordance with GOST 12414-94.

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

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

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

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

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

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

Mechanical properties bolts must comply with strength classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Changed edition, Amendment No. 1).

6. Theoretical mass bolts is indicated in the appendix.

APPENDIX (reference)

APPLICATION
Information


Bolt length, mm	Theoretical weight 1000 pcs. bolts, kg, with nominal thread diameter, mm

Electronic document text
prepared by Kodeks JSC and verified against:
official publication
Bolts. Technical conditions.
Design and dimensions: Sat. standards. -
M.: Standartinform, 2006

GOST 7801-81

INTERSTATE STANDARD

BOLTS WITH INCREASED
SEMI-CIRCULAR HEAD AND MUSTACHE
ACCURACY CLASS C

Design and dimensions

INTERSTATE STANDARD

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

Design and dimensions

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

GOST
7801-81

In return
GOST 7801-72

Edition with Amendments No. 1.2, approved in June 1986, April 1987 (IUS 9-86, 8-87).

By Decree of the USSR State Committee 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 the table. And .

Table 1

Nominal thread diameterd
Head diameter D
Head height k
Sphere radius R»
Whisker height W, no less
Thread length b	For l£ 120
Thread length b	For l> 120

Example of a symbol bolt with thread diameter d= 12 mm, coarse thread pitch with 8g tolerance, length l= 60 mm, strength class 3.6, with a zinc coating 6 microns thick, applied by cathodic reduction, chromated:

Bolt M12 ´ 60.36.016 GOST 7801-81

table 2

Notes:

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

2. Bolts in the area from the top bold line to the dotted line are made with threads to the tip

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

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

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

By agreement between the manufacturer and the consumer, it is allowed to produce bolts with a thread tolerance 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 bolts must correspond to strength classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Changed edition, Amendment No. 1).

6. The theoretical mass of bolts is given in the reference appendix.

APPLICATION
Information

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

Edition with Amendments No. 1.2, approved in June 1986, April 1987 (IUS 9-86, 8-87).

By Decree of the USSR State Committee 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 the table. 1 and 2.

Table 1

Nominal thread diameter d
Head diameter D
Head height k
Sphere radius R »
Whisker height W, no less
Thread length b	For l£120
Thread length b	For l > 120

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

table 2

Notes:

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

2. Bolts in the area from the top bold line to the dotted line are made with threads to the tip

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

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

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

By agreement between the manufacturer and the consumer, it is allowed to produce bolts with a thread tolerance 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 bolts must correspond to strength classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Changed edition, Amendment No. 1).

6. The theoretical mass of bolts is given in the reference appendix.

APPLICATION
Information

Bolt length l, mm	Theoretical weight 1000 pcs. bolts, kg, with nominal thread diameter d, mm
Bolt length l, mm

STATE STANDARD OF THE USSR UNION

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

GOST 7801-81

STATE COMMITTEE OF THE USSR BY STANDARDS

Moscow

STATE STANDARD OF THE USSR UNION

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

DesignAnddimensions

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

GOST
7801-81*

In return
GOST 7801-72

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

from 01.01.82

Verified in 1986. By Decree of the USSR State Standard dated June 23, 1986 No. 1643, the validity period was extended

until 01/01/97

Failure to comply 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 the table. And .

Table 1


Head diameter D
Head height k
Sphere radius R »
Whisker height W, no less
Thread length b	For l£120
Thread length b	For l > 120

Bolt M12 ´ 60 .36 .016 GOST 7801 -81

table 2

	Nominal thread diameter d

























Notes: 1. Bolts are manufactured with lengths enclosed between bold lines. 2. Bolts in the area from the upper bold line to the dotted line are made with threads to the point.

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

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

By agreement between the manufacturer and the consumer, it is allowed to produce bolts with a thread tolerance 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 bolts must correspond to strength classes 3.6, 4.6, 4.8, 5.6 and 5.8.

(Changed edition, Amendment No. 1).

6. The theoretical mass of bolts is given in the reference appendix.

APPLICATION

Information

Bolt length l, mm	Theoretical weight 1000 pcs. bolts, kg, with nominal thread diameter d, mm
Bolt length l, mm

GOST 7801-81

INTERSTATE STANDARD

BOLTS WITH ENLARGED SEMI-ROUND HEAD AND MUSTACLE ACCURACY CLASS C

DESIGN AND DIMENSIONS

Official publication

INTERSTATE STANDARD

BOLTS with an enlarged semicircular HEAD AND MUSTACLE 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 Decree of the USSR State Committee 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 the table. 1 and 2.

Table 1mm

Official publication ★

Reproduction is prohibited

An example of a symbol for a bolt with a thread diameter d = 12 mm, with a large thread pitch with a tolerance range of 8 g, length / = 60 mm, strength class 3.6, with a zinc coating, 6 microns thick, applied by cathodic reduction, chromated:

Bolt M12-60.36.016 GOST 7801-81

Table 2 mm

Bolt length /	Nominal thread diameter d
Bolt length /

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 threads to the point.

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

3. Thread - according to GOST 24705-2004, thread pitch - large. Runaway and undercut threads - according to GOST 27148-86. The ends of the bolts are in accordance with GOST 12414-94.

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

Behind. The radius under the head is 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 produce bolts with a thread tolerance of 6e.

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

For-Sv. (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.

The mechanical properties of bolts must correspond to strength classes 3.6, 4.6, 4.8, 5.6

(Changed edition, Amendment No. 1).

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

APPLICATION

Information

Bolt length /, mm	Theoretical weight 1000 pcs. bolts, kg,	at nominal thread diameter d, mm
Bolt length /, mm