GOST 10657-80 Round Nuts with Slot on the End Face. Specifications

INTERSTATE STANDARD

ROUND NUTS WITH SLOT ON THE END FACE	GOST 10657-80
Technical specifications
Round nuts slotted on face. Specifications

Effective date 01.01.82

This standard applies to round nuts with a slot on the end face with thread diameter from 1 to 20 mm, product grade B.

The requirements of this standard are mandatory.

(Revised edition, Amendment 2).

Contents

1. DIMENSIONS

2. TECHNICAL REQUIREMENTS

3. ACCEPTANCE RULES

4. MARKING AND PACKAGING

APPENDIX 1 (reference) MASS OF STEEL NUTS

INFORMATIONAL DATA

1. Dimensions

1.1. Nut dimensions shall comply with those shown on the drawing and in the table.

Nominal thread diameter d		M 1	M 1.2	M 1.4	M 1.6	M 2	M 2.5	M 3	(M 3.5)	M 4	M5	M6	MS	M10	M12	(M14)	M16	(M18)	M20
Thread pitch P	coarse	0.25	0.25	0.3	0.35	0.4	0.45	0.5	0.6	0.7	0.8	1.0	1.25	1.5	1.75	2.0	2.0	2.5	2.5
	fine	-	-	-	-	-	-	-	-	-	-	-	1.0	1.25	1.25	1.5	1.5	1.5	1.5
d a	min	1.0	1.2	1.4	1.6	2.0	2.5	3.0	3.45	4.0	5.0	6.0	8.0	10.0	12.0	14.0	16.0	18.0	20.0
	max	1.15	1.4	1.6	1.84	2.3	2.9	3.5	4.0	4.6	5.75	6.75	8.75	10.8	13.0	15.1	17.3	19.5	21.6
d k	min	2.25	2.75	2.75	3.2	4.2	5.2	5.7	6.64	7.64	8.64	10.57	13.57	17.57	20.48	23.48	25.48	28.48	31.38
	max	2.5	3.0	3.0	3.5	4.5	5.5	6.0	7.0	8.0	9.0	11.0	14.0	18.0	21.0	24.0	26.0	29.0	32.0
m	min	0.75	0.95	1.15	1.35	1.75	1.95	2.25	2.75	3.2	3.9	4.7	6.14	7.64	9.64	10.57	11.57	12.57	13.57
	max	1.0	1.2	1.4	1.6	2.0	2.2	2.5	3.0	3.5	4.2	5.0	6.5	8.0	10.0	11.0	12.0	13.0	14.0
n	nom	0.3	0.4	0.4	0.5	1.0	1.2	1.2	1.4	1.4	2.0	2.5	3.0	3.5	4.0	4.0	4.0	4.0	5.0
	min	0.36	0.46	0.46	0.56	1.06	1.26	1.26	1.46	1.46	2.06	2.56	3.06	3.57	4.07	4.07	4.07	4.07	5.07
	max	0.5	0.6	0.6	0.7	1.2	1.51	1.51	1.71	1.71	2.31	2.81	3.31	3.87	4.37	4.37	4.37	4.37	5.37
t	min	0.3	0.4	0.5	0.6	0.8	0.9	1.0	1.0	1.2	1.5	2.0	2.5	3.2	3.8	3.8	3.8	4.8	4.8
	max	0.5	0.6	0.7	0.8	1.0	1.1	1.2	1.4	1.6	1.9	2.4	3.0	3.7	4.3	4.3	4.3	5.5	5.5

Notes:

1. Nut dimensions shown in brackets are not recommended for use.

2. For nuts with thread diameter M1 and M1.2, a rounded edge with radius R = 0.1 mm may be used instead of chamfers.

3. For nuts with thread diameter M4, the dimension n min = 1.66 mm and max = 1.91 mm may be used.

Example of designation for a nut with thread diameter d = 12 mm, coarse thread pitch, tolerance class 6H, property class 5, with chemical oxide coating impregnated with oil:

Nut M12 - 6H.5.05 GOST 10657-80

Same, with fine thread pitch, tolerance class 6H, material group 32, brass grade L63, with silver coating 9 μm thick:

Nut M12×1.25 - 6H.32.L63.129 GOST 10657-80

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

1.2. (Deleted, Amendment No. 2).

1.3. The theoretical mass of nuts is given in Appendix 1.

2. Technical requirements

2.1. Nuts shall be manufactured in accordance with the requirements of this standard and GOST 1759.0.

2.2. Thread — per GOST 24705.

(Amended edition, Amendment No. 1).

2.3. (Deleted, Amendment No. 2).

2.4. Tolerances of form and location of nut surfaces — per GOST 24643;

symmetry of the slot relative to the thread axis — grade 13;

coaxiality of the outer diameter relative to the thread — grade 12.

The perpendicularity tolerance of the nut’s bearing surfaces relative to the thread axis corresponds to 1°.

(Amended edition, Amendment No. 1).

2.5. (Deleted, Amendment No. 1).

3. ACCEPTANCE RULES

3.1. Acceptance rules — per GOST 17769.

4. MARKING AND PACKAGING

4.1. Temporary corrosion protection, packaging of nuts and marking of containers — per GOST 18160.

(Amended edition, Amendment No. 1).

APPENDIX 1

For reference

MASS OF STEEL NUTS

Nominal thread diameter d, mm	Theoretical mass of 1000 nuts, kg
1	0.033
1.2	0.056
(1.4)	0.063
1.6	0.066
2	0.146
2.5	0.256
3	0.414
4	1.040
5	1.830
6	2.530
8	5.260
10	11.030
12	21.060
16	36.270
20	56.320
-	-

Note. To determine the mass of brass nuts, multiply the masses given in the table by a factor of 1.080.

APPENDIX 2. (Excluded, Amendment No. 1).

INFORMATIONAL DATA

1. DEVELOPED AND SUBMITTED BY the Ministry of Machine Tool and Tool-Making Industry of the USSR

2. APPROVED AND PUT INTO EFFECT by Decree of the USSR State Committee for Standards dated 09.07.80 No. 3504

3. SUPERSEDES GOST 10657-73

4. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause number
GOST 1759.0-87	2.1
GOST 17769-83	3.1
GOST 18160-72	4.1
GOST 24643-81	2.4
GOST 24705-2004	2.2

5. The validity period restriction was removed by Decree of Gosstandart of the USSR dated 19.11.91 No. 1757

6. EDITION 2006, with Amendments No. 1, 2, approved in August 1986 and November 1991 (IUS 11-86, 2-92).

Corresponds to DIN 546.