5306-00-298-4810, BOLT,EXTERNALLY RELIEVED BODY

5306-00-298-4811 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-298-4810

Federal Supply Class:
5306

National Item Identification Number:
002984810

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:

6258272	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
GAA6214	23040	FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES
GAA6214	57526	FORD MOTOR COMPANY

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.500 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.688 INCHES NOMINAL
FASTENER LENGTH	2.940 INCHES NOMINAL
MATERIAL	STEEL COMP 8640 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.770 INCHES MINIMUM AND
	2.780 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES NOMINAL FIRST HOLE
FIRST DIAMETER FROM HEAD	0.525 INCHES MINIMUM AND
	0.526 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.425 INCHES MINIMUM AND
	0.530 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.510 INCHES MINIMUM AND
	0.511 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.425 INCHES MINIMUM AND
	0.430 INCHES MAXIMUM
FIFTH DIAMETER FROM HEAD	0.500 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.240 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.980 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.680 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	2.200 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER	2.240 INCHES MINIMUM AND
	2.280 INCHES MAXIMUM
SPECIAL FEATURES	3RD SHOULDER HAS 1 DEG 22 MIN TAPER0.200 IN. LG TOWARD THD END,45 DEG CHAMFE 0.060 IN. LG ON THD END

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