5305-01-237-2788, SCREW,EXTERNALLY RELIEVED BODY

3930-01-237-2787 ADAPTER,LIFT TRUCK FORK

National Stock Number:
5305-01-237-2788

Federal Supply Class:
5305

National Item Identification Number:
012372788

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:

13080145	04939	LOCKHEED MARTIN CORPORATION
13080145	58260	PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.387 INCHES MINIMUM AND 0.392 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.687 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.185 INCHES NOMINAL
HEAD DIAMETER	0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
HEAD HEIGHT	0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
HEAD STYLE	PAN
INTERNAL DRIVE STYLE	HEXAGON
LOCKING FEATURE	STRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
MINIMUM TENSILE STRENGTH	80000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.295 INCHES MINIMUM AND 0.300 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNRF
WIDTH ACROSS FLATS	0.1562 INCHES NOMINAL

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