GOST 1483-84 Hexagon-Head Step-Point Set Screws with Cone, Product Grades A and B. Construction and Dimensions

INTERSTATE STANDARD
Hexagon-head step-point with cone set screws. Product grades A and B. Construction and dimensions	GOST 1483-84

Effective date 01.01.86

1. This standard applies to set screws with a nominal thread diameter from 6 to 20 mm.

2. The construction and dimensions of the screws shall conform to those shown in the drawing and table.

mm

Nominal thread diameter d		6	8	10	12	16	20
Width across flats S		8	10	12	14	17	22
Head height k		5	6	7	9	11	14
Screw length l	12		-	-	-	-	-
	14			-	-	-	-
	16				-	-	-
	20					-	-
	25						-
	30			Standard lengths			-
	35
	40	-
	45	-	-
	50	-	-
	55	-	-	-
	60	-	-	-
	65	-	-	-	-
	70	-	-	-	-
	75	-	-	-	-
	80	-	-	-	-
	90	-	-	-	-	-
	100	-	-	-	-	-

Example of designation for a product grade B screw with thread diameter d = 10 mm, tolerance class 6g, length l = 25 mm, property class 14H, without coating:

Screw B.M10-6g×25.14H GOST 1483-84

Same, product grade A, property class 45H, made of steel 40Kh with chemical oxide coating, oil-impregnated:

Screw A.M10-6g×25.45H.40Kh.05 GOST 1483-84

Same, made of brass LS 59-1, without coating:

Screw A.M10-6g×25.32 GOST 1483-84

3. Thread — per GOST 24705, thread pitch — coarse. Thread run-out — normal, per GOST 10549.

4. Radius under the head — per GOST 24670.

5. Screw end — step-point with cone, to GOST 12414.

6. Tolerances and methods of inspection for dimensions, form and position deviations of surfaces — per GOST 1759.1.

7. Surface defects and inspection methods — per GOST 1759.2.

8. Mechanical properties and test methods for screws: made of carbon and alloy steel — per GOST 25556; made of corrosion-resistant, heat-resistant, heat-resisting steel and non-ferrous alloys — per GOST 1759.1, GOST 1759.2, GOST 1759.4.

9. Screws are manufactured with the following coatings: chromated zinc, chromated cadmium, nickel, oxide impregnated with oil, phosphate impregnated with oil, or without coating.

10. Other technical requirements — per GOST 1759.0.

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

Appendix

For reference

Theoretical mass of 1000 pcs. of steel screws, kg

Screw length l, mm	Nominal thread diameter d, mm
	6	8	10	12	16	20
12	4.26	-	-	-	-	-
14	4.61	7.64	-	-	-	-
16	4.96	8.28	13.65	-	-	-
20	5.67	9.55	15.66	23.94	-	-
25	6.55	11.14	18.17	27.58	49.61	-
30	7.43	12.73	20.68	31.21	56.26	-
35	8.31	14.32	23.19	34.85	62.91	111.49
40	-	15.91	25.70	38.48	69.56	121.89
45	_	-	28.21	42.12	76.21	132.29
50	-	-	30.72	45.75	82.86	142.69
55	-	-	-	49.38	89.51	153.09
60	-	-	-	53.02	96.14	163.49
65	-	-	-	-	103.30	173.89
70	-	-	-	-	109.90	184.29
75	-	-	-	-	116.60	194.69
80	-	-	-	-	123.20	205.09
90	-	-	-	-	-	225.89
100	-	-	-	-	-	246.69

Note. To determine the mass of screws made of other materials, the mass values given in the table should be multiplied by the coefficient: 0.356 for aluminium alloy, 0.97 for bronze, 1.08 for brass.

Referenced normative-technical documents:

Designation of the referenced regulatory document	Clause number
GOST 1759.0-87	10
GOST 1759.1-82	6, 8
GOST 1759.2-82	7, 8
GOST 1759.4-87	8
GOST 10549-80	3
GOST 12414-94	5
GOST 24670-81	4
GOST 24705-2004	3
GOST 25556-82	8