5305-01-434-3749, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-434-3749

Federal Supply Class:
5305

National Item Identification Number:
014343749

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.

Manufacturer Information:

91292A226	39428	MCMASTER-CARR SUPPLY CO
B18.3.1M-M12X1.75X25,SHCS,ZNPL	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
B1831BH120025N	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED

Techincal Specification:

EXTERNAL THREAD TOLERANCE CLASS	4G6G
FASTENER LENGTH	25.0 MILLIMETERS NOMINAL
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	17.6 MILLIMETERS MINIMUM AND 18.0 MILLIMETERS MAXIMUM
HEAD HEIGHT	11.7 MILLIMETERS MINIMUM AND 12.0 MILLIMETERS MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	DIN 912 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL PROPERTY CLASS 12.9 OVERALL
MINIMUM YIELD STRENGTH	1100 MEGAPASCALS
MINIMUM TENSILE STRENGTH	1220 MEGAPASCALS
NOMINAL THREAD DIAMETER	12.0 MILLIMETERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633,TYPE 2,CLASS 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC AND CHROMATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	25.0 MILLIMETERS NOMINAL
THREAD PITCH IN MILLIMETERS	1.75
THREAD SERIES DESIGNATOR	M
WIDTH ACROSS FLATS	12.0 MILLIMETERS MINIMUM AND 12.1 MILLIMETERS MAXIMUM

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