5306-00-251-2181, BOLT,EXTERNALLY RELIEVED BODY

6145-00-251-2192 CABLE,SPECIAL PURPOSE,ELECTRICAL

National Stock Number:
5306-00-251-2181

Federal Supply Class:
5306

National Item Identification Number:
002512181

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:

4X181C1

98296

STANDARD MFG CO INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.313 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	1.094 INCHES MINIMUM AND 1.156 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.155 INCHES MINIMUM AND 0.160 INCHES MAXIMUM
HEAD STYLE	SQUARE
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.625 INCHES
SECOND DIAMETER FROM HEAD	0.499 INCHES MINIMUM AND 0.501 INCHES MAXIMUM
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.656 INCHES MINIMUM AND 0.718 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	18
WIDTH BETWEEN FLATS	1.094 INCHES MINIMUM AND 1.156 INCHES MAXIMUM

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