5305-01-378-7940, SCREW,CAP,SOCKET HEAD

5935-01-378-7941 BACKSHELL,ELECTRICAL CONNECTOR

National Stock Number:
5305-01-378-7940

Federal Supply Class:
5305

National Item Identification Number:
013787940

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:

12387270-170	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
5305013787940	A00AM	E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE

Techincal Specification:

COLOR	BRONZE OR OLIVE DRAB OVERALL
FASTENER LENGTH	2.440 INCHES MINIMUM AND 2.500 INCHES MAXIMUM
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
HEAD DIAMETER	0.921 INCHES MINIMUM AND 0.937 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	FED 66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.625 INCHES
WIDTH ACROSS FLATS	0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES FASTENER
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 TY2 CL3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.750 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	11

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