GOST 1488-84 Set Screws with Square Head and Collar

Set screws with square head

and collar, product grades A and B

Design and dimensions

Square-head collar set screws.

Product grades A and B. Construction and dimensions

Effective date 1986-01-01

INFORMATIONAL DATA

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

DEVELOPERS

V.G. Seregin, A.M. Sviridov, N.I. Antonova, N.I. Denisova

2. APPROVED AND PUT INTO EFFECT by Decree of the USSR State Committee for Standards dated 08.05.84 No. 1590

3. SUPERSEDES GOST 1488-75

4. REFERENCE REGULATORY AND 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

5. EDITION with Amendment No. 1, approved in July 1987 (IUS 12-87)

6. This standard applies to screws with nominal thread diameter from 5 to 20 mm.

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

mm

Note. The symbol X marks screws with thread up to the head.

Example of designation for a screw of product grade B, thread diameter d=10 mm, tolerance field 6g, length l=25 mm, property class 14H, plain (uncoated):

Screw B.10-6g×25.14H GOST 1488-84

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 1488-84

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

Screw A.M10-6g×25.32 GOST 1488-84

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

3. Thread — per GOST 24705, thread pitch — coarse. Thread runout and incomplete thread — standard per GOST 10549.

4. Radius under the head — per GOST 24670.

5. Screw end — flat per 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.

(Amended edition, Amendment No. 1).

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.

(Amended edition, Amendment No. 1).

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
	5	6	8	10	12	16	20
14	3.400	6.310	-	-	-	-	-
16	3.640	6.670	11.00	-	-	-	-
20	4.268	7.390	12.30	21.00	-	-	-
25	5.039	8.529	13.90	23.50	-	-	-
30	5.810	9.639	16.10	26.00	40.60	-	-
35	6.580	10.750	18.08	29.63	44.93	-	-
40	7.351	11.360	20.05	32.71	49.37	100.5	-
45	8.122	12.970	22.02	35.79	53.81	108.9	-
50	-	14.080	23.99	38.87	58.25	116.8	200.4
55	-	-	-	41.96	62.69	124.7	214.1
60	-	-	-	45.04	67.13	132.6	226.4
65	-	-	-	-	71.56	144.4	238.8
70	-	-	-	-	76.01	148.4	251.1
75	-	-	-	-	-	156.2	263.4
80	-	-	-	-	-	164.1	275.7
90	-	-	-	-	-	179.9	300.4
100	-	-	-	-	-	-	325.1
110	-	-	-	-	-	-	349.7

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.

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

Corresponds to DIN 478.