GOST 5932-73 Hexagon Slotted and Castle Nuts, Product Grade A. Design and Dimensions

INTERSTATE STANDARD

HEXAGON SLOTTED AND CASTLE NUTS, PRODUCT GRADE A	GOST 5932-73
Design and dimensions
Hexagon slotted and castle nuts, accuracy class A. Construction and dimensions

Effective date 01.01.74

This standard applies to slotted and castle hexagon nuts, product grade A, with thread diameter from 4 to 48 mm.

The standard fully complies with ST SEV 2664-89.

(Amended edition, Amendment No. 3).

1. The design and dimensions of the nuts shall comply with those shown in the drawing and table.

Table 1

mm

Nominal thread diameter d		4	5	6	8	10	12	(14)	16	(18)	20	(22)	24	(27)	30	(33)	36	(39)	42	48
Thread pitch	coarse	0.7	0.8	1.0	1.25	1.5	1.75	2.0	2.0	2.5	2.5	2.5	3.0	3.0	3.5	3.5	4.0	4.0	4.5	5.0
	fine	-	-	-	1.0	1.25	1.25	1.5	1.5	1.5	1.5	1.5	2.0	2.0	2.0	2.0	3.0	3.0	3.0	3.0
Width across flats S		7	8	10	13	16	18	21	24	27	30	34	36	41	46	50	55	60	65	75
Height h		5.0	6.7	7.7	9.8	12.4	15.8	17.8	20.8	22.4	24.0	27.8	29.5	31.6	34.6	37.7	40.0	42.4	46	50
Distance from the bearing surface to the base of the slot and castellation m		3.2	4.7	5.2	6.8	8.4	10.8	12.8	14.8	16.4	18.0	19.8	21.5	23.6	25.6	28.7	31.0	33.4	34.0	38.0
dw, min		6.3	7.2	9.0	11.7	14.6	16.6	19.6	22.5	25.3	27.7	31.7	33.2	38.3	42.7	46.6	51.1	55.9	60.6	69.4
Circumscribed circle diameter e, min		7.7	8.8	11.1	14.4	17.8	20.0	23.4	26.8	30.1	33.5	37.7	40.0	45.6	51.3	55.8	61.3	67.0	72.6	83.9
Chamfer diameter da	min	4	5	6	8	10	12	14	16	18	20	22	24	27	30	33	36	39	42	48
	max	4.6	5.75	6.75	8.75	10.8	13.0	15.1	17.3	19.4	21.6	23.8	25.9	29.2	32.4	35.6	38.9	42.2	45.4	51.8
Crown diameter D		-	-	-	-	-	16	19	22	25	28	32	34	38	42	46	50	55	58	65
Number of slots		6																	8
Slot width n		1.2	1.4	2.0	2.5	2.8	3.5		4.5	4.5		5.5			7.0				9.0
Cotter pin size (recommended) per GOST 397	Type 1	1×12	1.2×12	1.6×16	2×20	2.5×25	3.2×32		4×36	4×40		5×45		5×50	6.3×63		6.3×71		8×80	8×90
	Type 2	-	-	-	-	-	3.2×25		4×32	4×36		5×40		5×45	6.3×50		6.3×63		8×71	8×80

Notes:

1. Dimensions in parentheses are not recommended for use.

2. By agreement between the manufacturer and the customer, nuts with a nominal thread diameter from 36 to 48 mm may be made with a 2 mm thread pitch.

3. For products designed before 01.01.91, nuts with dimensions specified in Annex 2 may be used.

Example of designation for a Type 1 nut, thread diameter d = 12 mm, coarse pitch, tolerance class 6H, property class 5, plain (uncoated):

Nut M12 - 6H.5 GOST 5932-73

Same, design 2, fine thread pitch, tolerance class 6H, with coating 01, thickness 9 µm:

Nut 2M12×1.25 - 6H.5.019 GOST 5932-73

(Amended edition, Amendment No. 1, 2, 3, 4, 5).

2. Thread — per GOST 24705.

(Amended, Amendment No. 4).

3. A chamfer on the slot or crown side is permitted.

3a. The shape of the slot bottom may be flat, rounded, or chamfered.

(Added, Amendment No. 3).

4. Technical requirements — per GOST 1759.0.

5. Theoretical mass of nuts is given in Annex 1.

APPENDIX 1

For reference

Mass of steel nuts with coarse thread pitch

Table 2

Nominal thread diameter d, mm	Theoretical mass of 1000 nuts, kg
	Type 1	Type 2
4	1.099	-
5	1.767	-
6	3.295	-
8	7.027	-
10	14.030	-
12	20.881	18.326
14	32.176	28.079
16	46.404	42.099
18	62.596	59.875
20	86.221	79.795
22	124.019	114.744
24	152.156	140.738
27	216.998	199.130
30	301.228	275.592
33	409.503	377.149
36	505.760	466.689
39	670.44	614.836
42	800.488	728.350
48	1192.376	1079.830

APPENDIX 1. (Amended edition, Amendment No. 5).

APPENDIX 2

For reference

Table 3

mm

Nominal thread diameter d	10	12	14	22
Width across flats S	17	19	22	32
Circumscribed circle diameter e, min	18.9	21.1	24.5	35.8
dw, min	15.6	17.4	20.6	30.0

APPENDIX 2. (Additionally introduced, Amendment No. 5).

INFORMATIONAL DATA

1. DEVELOPED AND SUBMITTED BY the USSR State Committee for Standards

2. APPROVED AND PUT INTO EFFECT by Decree of the USSR State Committee for Standards of the Council of Ministers dated 23.01.73 No. 141

3. This standard fully complies with ST SEV 2664-89

The standard conforms to international standards ISO 4032-79, ISO 4035-79 with respect to width across flats dimensions.

4. SUPERSEDES GOST 5932-62

5. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause number
GOST 397-79	1
GOST 1759.0-87	4
GOST 24705-2004	2

6. The validity restriction was lifted by Protocol No. 4-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 4-94)

7. EDITION with Amendments No. 1, 2, 3, 4, 5, 6, approved in February 1974, August 1979, December 1981, October 1984, March 1989, March 1990 (IUS 3-74, 10-79, 2-82, 1-85, 6-89, 7-90).

Equivalent to DIN 935, DIN 937, EN ISO 7038.