6150-00-424-4420 CABLE ASSEMBLY,SPECIAL PURPOSE,E Index 6625-00-424-4424 PROGRAM BOARD ADAPT

National Stock Number:
5306-00-424-4421

Federal Supply Class:
5306

National Item Identification Number:
004244421

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:
MD378976558MWM-MURPHY DIESEL CO


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.219 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.375 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER3.313 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
FASTENER LENGTH4.688 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.751 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER1.188 INCHES NOMINAL
HEAD HEIGHT0.500 INCHES NOMINAL
HEAD STYLEROUND W/WRENCH FLATS CHAMFERED
MATERIALSTEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES
NONSTANDARD THREAD PITCH DIAMETER+0.7062 TO 0.7094 INCHES
SHANK UNTHREADED HOLE DIAMETER0.156 INCHES NOMINAL FIRST HOLE
SECOND DIAMETER FROM HEAD0.663 INCHES MINIMUM AND 0.666 INCHES MAXIMUM
SPECIAL FEATURESTWO DRILLED HOLES IN SHANK,0.437 IN. C TO C
WIDTH BETWEEN FLATS0.988 INCHES MINIMUM AND 0.990 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.375 INCHES MINIMUM
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNF


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