5306-00-677-8443, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-677-8443

Federal Supply Class:
5306

National Item Identification Number:
006778443

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:

726777-3

98897

LOCKHEED MARTIN CORP

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.005 INCHES MINIMUM AND 4.025 INCHES MAXIMUM FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	2.865 INCHES MINIMUM AND 2.895 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	3.115 INCHES MINIMUM AND 3.295 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	4.270 INCHES MINIMUM AND 4.290 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.998 INCHES MINIMUM AND 0.999 INCHES MAXIMUM
HEAD HEIGHT	0.500 INCHES NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6050,F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8630 OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	1.000 INCHES
SECOND DIAMETER FROM HEAD	0.872 INCHES MINIMUM AND 0.882 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	1.470 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.165 INCHES MINIMUM AND 1.185 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	14

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