5306-00-855-2012, BOLT,EXTERNALLY RELIEVED BODY

5306-00-855-2011 BOLT,MACHINE

5305-00-855-2014 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-855-2012

Federal Supply Class:
5306

National Item Identification Number:
008552012

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:

6860840

73342

ALLISON TRANSMISSION INC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.625 INCHES MINIMUM
FASTENER LENGTH	3.625 INCHES NOMINAL
MATERIAL	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
HEAD HEIGHT	0.300 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.305 INCHES MINIMUM AND
	0.313 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	0.438 INCHES NOMINAL
EXTENDED WASHER THICKNESS	0.060 INCHES MINIMUM AND
	0.070 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	4
FIRST DIAMETER FROM HEAD	0.244 INCHES MINIMUM AND
	0.249 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.190 INCHES MINIMUM AND
	0.195 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.2489 INCHES MINIMUM AND
	0.2495 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.190 INCHES MINIMUM AND
	0.195 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.200 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.400 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.600 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	3.000 INCHES NOMINAL
THE MANUFACTURERS DATA
MANUFACTURERS CODE	73342
DESIGN CONTROL REFERENCE	6860840

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