5306-00-687-6043, BOLT,EXTERNALLY RELIEVED BODY

5306-00-687-6042 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-687-6043

Federal Supply Class:
5306

National Item Identification Number:
006876043

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:

373662-1	06710	VALLEY-TODECO, INC.
373662-1	27238	BRISTOL INDUSTRIES LLC
373662-1	70210	HONEYWELL INTERNATIONAL INC.
373662-1	72599	ALLIEDSIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO
373662-1	99193	HONEYWELL INTERNATIONAL INC.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.440 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.206 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.490 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	1.920 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
HARDNESS RATING	28.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.169 INCHES MINIMUM AND 0.171 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL	NICKEL ALLOY X-750 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.210 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
SURFACE TREATMENT	PASSIVATE OVERALL
THIRD DIAMETER FROM HEAD	0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.430 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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