5305-01-067-0295, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-067-0295

Federal Supply Class:
5305

National Item Identification Number:
010670295

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:

1876682	16764	GENERAL MOTORS CORP DELCO REMY DIV
1876682	1LW55	BORGWARNER PDS (ANDERSON), L.L.C.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.500 INCHES NOMINAL
EXTENDED WASHER DIAMETER	0.322 INCHES MINIMUM AND 0.348 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.110 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.138 INCHES NOMINAL
HARDNESS RATING	80.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.120 INCHES MINIMUM AND 0.136 INCHES MAXIMUM
HEAD STYLE	HEXAGON EXTENDED WASHER
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 1018 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SURFACE TREATMENT	ZINC OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.550 INCHES NOMINAL
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
WIDTH BETWEEN FLATS	0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM

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