GOST 28964-91 Hex Socket Set Screws with Drilled End

INTERSTATE STANDARD

HEX SOCKET SET SCREWS WITH DRILLED END

Technical specifications

Effective date 1992-01-01

INFORMATIONAL DATA

1. PREPARED 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 Product Quality Management and Standards of 05.04.91 No. 446

3. The standard was prepared by the direct application of the international standard ISO 4029-83 “Hexagon socket set screws with cone point” and fully conforms to it

4. INTRODUCED FOR THE FIRST TIME

5. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Section number
GOST 9.303-84	3
GOST 1759.0-87	3
GOST 1759.1-82	3
GOST 16093-2004	1, 3
GOST 17769-83	3
GOST 24705-2004	1, 3
GOST 25556-82	1, 3

6. REISSUE

7. SCOPE

This standard establishes technical specifications for hex socket set screws with drilled end, with metric sizes, nominal thread diameter from 1.6 to 24.0 mm, product grade A.

If other technical specifications are required, it is recommended to select them from GOST 16093, GOST 24705 and GOST 25556.

Other forms of drilled ends are permitted.

The requirements of this standard are mandatory.

2. DIMENSIONS

Screw dimensions shall conform to those shown in the drawing and in Table 1.

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• Thread runout.

** The 120° angle is mandatory for short screws above the dashed line.

*** The 45° angle applies only to the part of the component below the thread minor diameter.

The hex socket may have a countersunk or slightly rounded edge around its perimeter.

Table 1

In millimetres

Material		Steel	Stainless steel	Non-ferrous metals
Thread	Tolerances	5g, 6g for class 45H; for other classes - 6g
National standards		GOST 24705, GOST 16093
Mechanical properties	Class	45H	Table 1	Table 3
National standards		GOST 25556	GOST 1759.0
Tolerances	Product grade	A
National standard		GOST 1759.1
Finish		Electroplated coatings per GOST 9.303: zinc chromated; cadmium chromated; nickel; oxide, oil-impregnated; phosphate, oil-impregnated. Other coating types may be applied by agreement between manufacturer and customer
Acceptance		Acceptance rules are per GOST 17769.

3. TECHNICAL REQUIREMENTS AND STANDARD REFERENCES

Screws shall be manufactured in accordance with the requirements given in Table 2.

Table 2

4. DESIGNATION

Example of designation for a hex socket set screw with drilled end, thread size d=M6, nominal length l=12 mm, property class 45H:

Screw M6×12 45H GOST 28964-91

Corresponds to DIN 916 and ISO 4029.