5306-00-545-3282, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-545-3282

Federal Supply Class:
5306

National Item Identification Number:
005453282

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:

348019

98897

LOCKHEED MARTIN CORP

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.230 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.820 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.950 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	3.110 INCHES NOMINAL
FEATURES PROVIDED	CASEHARDENED
FIRST DIAMETER FROM HEAD	0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
HEAD DIAMETER	1.000 INCHES NOMINAL
HEAD HEIGHT	0.250 INCHES NOMINAL
HEAD STYLE	ROUND W/WRENCH FLATS CHAMFERED
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES
SECOND DIAMETER FROM HEAD	0.495 INCHES MINIMUM AND 0.499 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.068 INCHES MINIMUM AND 0.073 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THIRD DIAMETER FROM HEAD	0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
THREAD LENGTH	0.550 INCHES NOMINAL
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNF

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