5306-00-439-3332, BOLT,EXTERNALLY RELIEVED BODY

5340-00-439-3334 POST,ELECTRICAL-MECHANICAL EQUIP

National Stock Number:
5306-00-439-3332

Federal Supply Class:
5306

National Item Identification Number:
004393332

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:

1C5214-2P4	01263	MAJOR TOOL & MACHINE INC
1C5214-2P4	07482	GENERAL ELECTRIC COMPANY

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.312 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	1A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.380 INCHES MAXIMUM
FASTENER LENGTH	3.380 INCHES MINIMUM AND
	3.400 INCHES MAXIMUM
MATERIAL	STEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND
	32.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.171 INCHES MINIMUM AND
	0.205 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.484 INCHES MINIMUM AND
	0.500 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	4
FIRST DIAMETER FROM HEAD	0.325 INCHES MINIMUM AND
	0.327 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.260 INCHES MINIMUM AND
	0.300 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.325 INCHES MINIMUM AND
	0.327 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.245 INCHES MINIMUM AND
	0.250 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.750 INCHES MINIMUM AND
	0.770 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	2.470 INCHES MINIMUM AND
	2.500 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	2.980 INCHES MINIMUM AND
	2.990 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	3.020 INCHES MINIMUM AND
	3.060 INCHES MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE	07482
DESIGN CONTROL REFERENCE	1C5214-2P4

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