5305-01-478-9928, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-478-9928

Federal Supply Class:
5305

National Item Identification Number:
014789928

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:

555660	55566	MATTHEW WARREN, INC
931SS0	D9182	ZF INDUSTRIEANTRIEBE WITTEN GMBH

Techincal Specification:

COUNTERSINK ANGLE	81.0 DEGREES MINIMUM AND 83.0 DEGREES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.453 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.797 INCHES MINIMUM AND 0.907 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.119 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
HEAD DIAMETER	0.312 INCHES NOMINAL
HEAD HEIGHT	0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
HEAD STYLE	OVAL COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM-A-581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM-A-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
THREAD LENGTH	0.250 INCHES NOMINAL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	32

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