5306-00-734-8262, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-734-8262

Federal Supply Class:
5306

National Item Identification Number:
007348262

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:

7348262	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
TA1043	81921	PACIFIC CAR AND FOUNDRY CO STRUCTURAL STEEL DIV

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	1.500 INCHES
THREAD QUANTITY PER INCH	12
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.812 INCHES MAXIMUM
FASTENER LENGTH	5.500 INCHES MAXIMUM
MATERIAL	STEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND
	32.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.688 INCHES NOMINAL
WIDTH BETWEEN FLATS	2.188 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	5.250 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.188 INCHES NOMINAL FIRST HOLE
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FIRST DIAMETER FROM HEAD	1.747 INCHES MINIMUM AND
	1.750 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	1.312 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	4.219 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	4.500 INCHES NOMINAL

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