5306-00-690-9621, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-690-9621

Federal Supply Class:
5306

National Item Identification Number:
006909621

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:

37344	99193	HONEYWELL INTERNATIONAL INC.
373744	70210	HONEYWELL INTERNATIONAL INC.
373744	72599	ALLIEDSIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO
373744	99193	HONEYWELL INTERNATIONAL INC.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.600 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.920 INCHES MINIMUM AND 2.000 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	2.610 INCHES MINIMUM AND 2.640 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.243 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HARDNESS RATING	34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.176 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL	STEEL COMP E4340 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.438 INCHES NOMINAL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.610 INCHES MINIMUM AND 0.870 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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