5305-01-317-3994, SCREW,EXTERNALLY RELIEVED BODY

5305-01-317-3995 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-317-3994

Federal Supply Class:
5305

National Item Identification Number:
013173994

Description:
SCREW,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.

Manufacturer Information:

1532401	10001	NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
AMS-QQ-S-763	0U583	SAE INTERNATIONAL
AMS-QQ-S-763	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.062 INCHES MINIMUM AND 1.082 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.005 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.285 INCHES MINIMUM AND 1.305 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.161 INCHES MINIMUM AND 0.181 INCHES MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM
HEAD STYLE	HEXAGON
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763,COND A FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 630 OR STEEL COMP 324 OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES
SECOND DIAMETER FROM HEAD	0.1966 INCHES MINIMUM AND 0.1969 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM
THREAD LENGTH	0.213 INCHES MINIMUM AND 0.233 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	32
WIDTH BETWEEN FLATS	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM

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