5306-01-498-2071, BOLT,EXTERNALLY RELIEVED BODY

5998-01-498-2070 CIRCUIT CARD ASSEMBLY

5305-01-498-2072 SCREW,MACHINE

National Stock Number:
5306-01-498-2071

Federal Supply Class:
5306

National Item Identification Number:
014982071

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:

MS9452-16

96906

MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.526 INCHES MINIMUM AND
	0.546 INCHES MAXIMUM
FASTENER LENGTH	1.125 INCHES NOMINAL
MATERIAL	STEEL COMP 601 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	NICKEL AND
	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL
HARDNESS RATING	42.0 ROCKWELL C MINIMUM AND
	46.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.156 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND
	0.439 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FIRST DIAMETER FROM HEAD	0.221 INCHES MINIMUM AND
	0.231 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.315 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
SPECIAL FEATURES	BOLT,HEX HD
PART NAME ASSIGNED BY CONTROLLING AGENCY	BOLT,MACHINE,HEXAGON HEAD,STEEL,.250-28 UNJF-3A
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS9452-16

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