5306-01-015-0667, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-015-0667

Federal Supply Class:
5306

National Item Identification Number:
010150667

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:

6247-SS-2520	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6247-SS-2520	1YGB8	CAREY MANUFACTURING CO, INC
6247SS2520	1YGB8	CAREY MANUFACTURING CO, INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.843 INCHES MINIMUM AND 0.917 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
HEAD HEIGHT	0.150 INCHES MINIMUM AND 0.172 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
WIDTH BETWEEN FLATS	0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.349 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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