5306-00-739-3340, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-739-3340

Federal Supply Class:
5306

National Item Identification Number:
007393340

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:

389731	57472	ALL MANUFACTURERS, INC.
389731	77445	RTX CORPORATION
389731	80539	SPS TECHNOLOGIES, LLC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.430 INCHES MINIMUM AND
	0.510 INCHES MAXIMUM
FASTENER LENGTH	4.290 INCHES MINIMUM AND
	4.310 INCHES MAXIMUM
MATERIAL	STEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5625 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.146 INCHES MINIMUM AND
	0.166 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND
	0.439 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.185 INCHES NOMINAL ALL HOLES
SHANK UNTHREADED HOLE DIAMETER	0.070 INCHES NOMINAL ALL HOLES
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FIRST DIAMETER FROM HEAD	0.249 INCHES MINIMUM AND
	0.250 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.194 INCHES MINIMUM AND
	0.198 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.249 INCHES MINIMUM AND
	0.250 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.194 INCHES MINIMUM AND
	0.198 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.415 INCHES MINIMUM AND
	0.435 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.330 INCHES MINIMUM AND
	1.350 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.850 INCHES MINIMUM AND
	1.870 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	3.280 INCHES MINIMUM AND
	3.300 INCHES MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE	57472
DESIGN CONTROL REFERENCE	389731

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