5975-99-513-4058 CHASSIS,ELECTRICAL-ELECTRONIC EQ Index 5975-99-513-4220 BASE,RECEIVER

National Stock Number:
5306-99-513-4060

Federal Supply Class:
5306

National Item Identification Number:
995134060

Description:
BOLT,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 undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.


Manufacturer Information:
SUM3987K5294GE AVIATION SYSTEMS LIMITED


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.795 INCHES NOMINAL
CRITICALITY CODE JUSTIFICATIONAAWC
FASTENER LENGTH1.299 INCHES MINIMUM AND 1.311 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.243 INCHES MINIMUM
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONBSI BS S145 CONDITION D NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SECOND DIAMETER FROM HEAD0.201 INCHES MINIMUM AND 0.204 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.431 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNJF


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