5306-01-073-7866, BOLT,EXTERNALLY RELIEVED BODY

5306-01-073-7865 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-073-7866

Federal Supply Class:
5306

National Item Identification Number:
010737866

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:

12302041	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
3-110-152-01	06710	VALLEY-TODECO, INC.
3-110-152-01	23899	J.W. MANUFACTURING, INC
3-110-152-01	92215	HOWMET GLOBAL FASTENING SYSTEMS INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.045 INCHES MINIMUM AND 0.065 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.641 INCHES MINIMUM AND 0.671 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM
HARDNESS RATING	34.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5708 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	NICKEL ALLOY OVERALL
MINIMUM TENSILE STRENGTH	5400 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.300 INCHES MINIMUM AND 0.340 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF

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