5305-01-239-4671, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-239-4671

Federal Supply Class:
5305

National Item Identification Number:
012394671

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:

SM-B-528627-3

80063

US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.250 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
HEAD HEIGHT	0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SPECIAL FEATURES	COLOR BLACK
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	OXIDE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
WIDTH BETWEEN FLATS	0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM

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