GOST 11473-75 Hexagon Head Wood Screws

State Standard of the Union of Soviet Socialist Republics

HEXAGON HEAD WOOD SCREWS

Design and dimensions

Hexogon head wood screws. Construction and dimensions

Validity period from 01.01.71 to 01.01.2002*

INFORMATIONAL DATA

1. DEVELOPED AND SUBMITTED BY the Ministry of Ferrous Metallurgy of the USSR

DEVELOPERS: I.N. Nedoviziy, R.V. Zhirova

2. APPROVED AND INTRODUCED by Decree of the USSR State Committee for Standards No. 3736 dated 28.11.75

3. Review date 1994, review frequency 5 years

4. The standard fully complies with ST SEV 2330-89.

5. SUPERSEDES GOST 11473-65

6. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause number
GOST 1147-80	3
GOST 24670-81	2c
GOST 24671-84	2a

7. REISSUE January 1993 WITH AMENDMENTS 1, 2, approved in December 1981 and May 1990 (IUS 3-82, 8-90)

8. REVIEWED in 1989. Validity period extended until 2002 (Decree of the USSR State Standard Committee No. 1090 dated 04.05.90)

9. This standard applies to hexagon head wood screws with a diameter from 6 to 20 mm.

10. The design and dimensions of the screws shall conform to those shown in the drawing and in Tables 1 and 2.

1, 2. (Amended version, Amendment No. 1, 2).

Table 1

mm

d (tolerance h14)		6	8	10	12	16	20
P (tolerance ±0.2 P)		2.6	3.5	4.5	5.0	6.0	7.0
d₂, max		4.2	5.6	7.0	9.0	12.0	15.0
S		10	13	16	18	24	30
k		4	5.3	6.4	7.5	10	12.5
e, min		10.9	14.2	17.6	19.9	26.2	33.0
dw, min		8.7	11.5	14.5	16.5	22.0	27.7
hw	min	0.15				0.20
	max	0.5				0.8

Note. For products designed before 01.01.91, screws with dimensions specified in Appendix 2 may be used.

Example of designation for a hexagon head wood screw with a diameter of 8, length 40 mm, made of low-carbon steel, plain (uncoated):

Screw 8×40 GOST 11473-75

The same, made of corrosion-resistant steel, with a zinc coating 6 μm thick applied by cathodic reduction, chromated:

Screw 8×40.2.016 GOST 11473-75

Table 2

mm

Screw length l		Screw diameter d
Nom.	Tolerance js17	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	-	-	-

2c. Reduced width across flats according to GOST 24671 may be used.

(Added, Amendment No. 1).

2b. The diameter of the smooth shank section d₁ shall be equal to the diameter for thread rolling or shall not exceed the outer diameter of the screw.

2c. The radius under the head is per GOST 24670.

2d. Screws may be manufactured with thread up to the head, as well as with a recess on the end face of the head.

2e. The head design variant is determined by the manufacturer.

2b, 2c, 2d, 2e. (Added, Amendment No. 2).

3. Technical requirements - per GOST 1147.

4. The theoretical mass of screws is given in the appendix.

APPENDIX 1

For reference

Theoretical mass of steel screws

Screw length l, mm	Theoretical mass of 1000 pcs of steel screws, kg, at nominal diameter d, 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 equals the mass of screws given in the table multiplied by a factor of 1.08.

(Amended version, Amendment No. 2).

APPENDIX 2

For reference

Permissible dimensions of screws

mm

d	S	e	dw
10	17	18.7	15.5
12	19	20.9	17.2

(Added, Amendment No. 2).

Corresponds to DIN 571.