5305-01-449-1001, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-449-1001

Federal Supply Class:
5305

National Item Identification Number:
014491001

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:

12342675

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

FASTENER LENGTH	1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.636 INCHES MINIMUM AND 0.656 INCHES MAXIMUM
HEAD HEIGHT	0.185 INCHES MINIMUM AND 0.199 INCHES MAXIMUM
HEAD STYLE	UNDERCUT PAN NO. 2
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	A322 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES
WIDTH ACROSS FLATS	0.2187 INCHES MINIMUM AND 0.2217 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	B633 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
THREAD QUANTITY PER INCH	16
THREAD SERIES DESIGNATOR	UNC

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