5306-01-272-0377, BOLT,EXTERNALLY RELIEVED BODY

5306-01-272-0378 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-272-0377

Federal Supply Class:
5306

National Item Identification Number:
012720377

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:

176C2141-3

05606

GENERAL DYNAMICS-OTS, INC.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.891 INCHES MINIMUM AND 1.953 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	3.125 INCHES NOMINAL
FEATURES PROVIDED	FINISHED HEAD
FIRST DIAMETER FROM HEAD	0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM
HEAD HEIGHT	0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON FLATS
HOLE DIAMETER	0.062 INCHES MINIMUM AND 0.078 INCHES MAXIMUM
HOLE QUANTITY	1
HOLE TYPE	DRILLED
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
NOMINAL THREAD DIAMETER	0.500 INCHES
WIDTH BETWEEN FLATS	0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.172 INCHES MINIMUM AND 1.234 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNJF

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