5305-99-894-8156, SCREW,EXTERNALLY RELIEVED BODY

5975-99-894-8181 MOUNTING BASE,ELECTRICAL EQUIPME

National Stock Number:
5305-99-894-8156

Federal Supply Class:
5305

National Item Identification Number:
998948156

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:

SUM3961

K5294

GE AVIATION SYSTEMS LIMITED

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.216 INCHES NOMINAL
FASTENER LENGTH	0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM AND 0.750 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.248 INCHES MAXIMUM AND 0.246 INCHES MINIMUM
FOURTH DIAMETER FROM HEAD	0.130 INCHES MAXIMUM AND 0.128 INCHES MINIMUM
HEAD HEIGHT	0.110 INCHES MAXIMUM AND 0.100 INCHES MINIMUM
HEAD DIAMETER	0.440 INCHES MAXIMUM AND 0.420 INCHES MINIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	BS S80 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR SMITH INDUSTRIES 1200-002 MFR REF SINGLE MATERIAL RESPONSE
MATERIAL	STEEL
NOMINAL THREAD DIAMETER	0.190 INCHES
SECOND DIAMETER FROM HEAD	0.130 INCHES MAXIMUM AND 0.128 INCHES MINIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	BLACKENED SMITH INDUSTRIES 0722-602 MFR REF SINGLE TREATMENT RESPONSE
THIRD DIAMETER FROM HEAD	0.248 INCHES MAXIMUM AND 0.246 INCHES MINIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.270 INCHES NOMINAL
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNF
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.130 INCHES MAXIMUM AND 0.120 INCHES MINIMUM

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