5306-00-514-9093, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-514-9093

Federal Supply Class:
5306

National Item Identification Number:
005149093

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:

8717393

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.375 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.000 INCHES MINIMUM
FASTENER LENGTH	8.250 INCHES MINIMUM
MATERIAL	STEEL COMP 8640 OR
	STEEL COMP 8740 OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND
	36.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.220 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.553 INCHES MINIMUM AND
	0.565 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	5
FIRST DIAMETER FROM HEAD	0.368 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.288 INCHES MINIMUM AND
	0.292 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.368 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.288 INCHES MINIMUM AND
	0.292 INCHES MAXIMUM
FIFTH DIAMETER FROM HEAD	0.368 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.380 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.760 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	4.380 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	6.870 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER	7.250 INCHES NOMINAL

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