Self-tapping screw with a hex head (popularly - a plumbing screw, bolt). It is used to install structural elements in wooden bases without pre-drilling, in concrete, brick (solid and hollow) bases - together with expansion dowels with pre-drilling.

GOST 11473-75. Hex head screws. Design and dimensions (with Changes N 1, 2)

GOST 11473-75

Group G32

STATE STANDARD OF THE UNION OF THE SSR

HEX HEAD SCREWS

Design and dimensions

Hexogon head wood screws. Construction and dimensions

Valid from 01.01.71
until 01.01.2002*
_______________________________
* Expiry date removed
according to protocol N 7-95 of the Interstate Council
for standardization, metrology and certification
(IUS N 11, 1995). - Note "CODE".

INFORMATION DATA
1. DESIGNED AND INTRODUCED by the Ministry ferrous metallurgy of the USSR

DEVELOPERS
I.N.Nedovizy, R.V.Zhirova
2. APPROVED AND INTRODUCED BY Decree State Committee USSR according to the standards of 11/28/75 N 3736
3. Term of inspection 1994, frequency of inspection 5 years
4. The standard fully complies with ST SEV 2330-89.
5. REPLACE GOST 11473-65
6. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
The designation of the NTD to which the link is given
Item number
GOST 1147-80
3
GOST 24670-81
2c
GOST 24671-84
2a

7. REPUBLICATION January 1993 WITH CHANGES 1, 2, approved in December 1981, in May 1990 (IUS 3-82, 8-90)
8. CHECKED in 1989. Validity extended until 2002 (Resolution of the State Standard of the USSR N 1090 dated 04.05.90)

1. This standard applies to screws with a hexagonal head with a diameter of 6 to 20 mm.
2. The design and dimensions of the screws must correspond to those indicated on the drawing and in tables 1 and 2.

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

Table 1

mm
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
(prev. off. GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2))
6
8
10
12
16
20
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
(limit deviation ±0.2 GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes No. 1, 2))
2,6
3,5
4,5
5,0
6,0
7,0
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes No. 1, 2), no more
4,2
5,6
7,0
9,0
12,0
15,0
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
10
13
16
18
24
30
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
4
5,3
6,4
7,5
10
12,5

10,9
14,2
17,6
19,9
26,2
33,0
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes No. 1, 2), not less than
8,7
11,5
14,5
16,5
22,0
27,7
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
at least
0,15
0,20
no more
0,5
0,8

Note. For products designed before 01/01/91, it is allowed to use screws with the dimensions specified in Appendix 2.

Example symbol screw with a hexagonal head with a diameter of 8, a length of 40 mm from low carbon steel, without cover:
Screw 8x40 GOST 11473-75

The same, from corrosion-resistant steel, with a zinc coating 6 microns thick, applied by the cathodic reduction method, chromated:
Screw 8x40.2.016 GOST 11473-75

table 2

mm
Screw length GOST 11473-75 Hex head screws. Design and dimensions (with Changes N 1, 2)
Screw diameter GOST 11473-75 Hex head screws. Design and dimensions (with Changes N 1, 2)
Rated
Previous off GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
6
8
10
12
16
20
20
±1.05
-
-
-
-
-
25

-
-
-
-
30

-
-
-
35
±1.25
-
-
-
40

Standard lengths
-
-
45
-
-
50
-
-
60
±1.50
-
70
80
90
±1.75
100
110
-
120
-
140
±2.00
-
160
-
-
180
-
-
-
200
±2.30
-
-
-

2a. It is allowed to manufacture turnkey screws with reduced dimensions in accordance with GOST 24671.

(Introduced additionally, Rev. N 1).
2b. The diameter of the smooth part of the rod GOST 11473-75 Screws with a hexagonal head. The design and dimensions (with Amendments N 1, 2) must be equal to the diameter for thread knurling or not exceed the outer diameter of the screw.
2c. The radius under the head - according to GOST 24670.
2y. It is allowed to manufacture screws with a thread up to the head, as well as with a hole on the end surface of the head.
2d. The head version is set by the manufacturer.

2b, 2c, 2d, 2e. (Introduced additionally, Rev. N 2).
3. Technical requirements- according to GOST 1147.
4. Theoretical mass screws is given in the appendix.

ATTACHMENT 1
Reference
Theoretical mass of steel screws
Screw length GOST 11473-75 Hex head screws. Design and dimensions (with Changes N 1, 2), mm
Theoretical weight 1000 pcs. steel screws, kg nominal diameter GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2), mm
6
8
10
12
16
20
20
5,01
-
-
-
-
-
25
5,77
11,2
-
-
-
-
30
6,53
12,5
20,5
-
-
-
35
7,29
13,9
22,7
-
-
-
40
8,05
15,2
24,8
36,1
-
-
45
8,81
16,6
26,9
39,4
-
-
50
9,57
17,9
29,0
42,6
-
-
60
11,09
20,6
33,3
49,1
94
-
70
12,61
23,3
37,6
55,6
106
175
80
14,12
26,1
41,8
62,1
117
193
90
15,64
28,8
46,1
68,6
129
211
100
17,16
31,5
50,3
75,0
140
228
110
-
34,2
54,6
81,5
152
248
120
-
36,9
58,8
88,0
164
266
140
-
42,3
67,3
101,0
187
302
160
-
-
75,9
114,0
210
338
180
-
-
-
126,9
233
375
200
-
-
-
139,9
256
411

Note. The mass of brass screws is equal to the mass of screws indicated in the table, multiplied by a factor of 1.08.

(Changed edition, Rev. N 2).

APPENDIX 2 (informative). Permissible screw sizes

APPENDIX 2
Reference

mm
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
GOST 11473-75 Screws with a hexagonal head. Design and dimensions (with Changes N 1, 2)
10
17
18,7
15,5
12
19
20,9
17,2

(Introduced additionally, Rev. N 2).

The text of the document is verified by:
official publication
M.: Publishing house of standards, 1993