5306-00-206-7278 BOLT,MACHINE Index 5306-00-206-7283 BOLT,MACHINE

National Stock Number:
5306-00-206-7279

Federal Supply Class:
5306

National Item Identification Number:
002067279

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.


Manufacturer Information:
797942519207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
BN430982347MARMON GROUP INC THE FENESTRA DIV /MICHIGAN


Techincal Specification:
FASTENER LENGTH6.875 INCHES MINIMUM AND 6.906 INCHES MAXIMUM
FEATURES PROVIDEDUNFINISHED HEAD
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
HEAD HEIGHT0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM
MATERIALSTEEL COMP 5135 OR STEEL COMP 4130 OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES
THREAD CLASS2A
THREAD LENGTH1.500 INCHES MAXIMUM
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNF


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