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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.
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Manufacturer Information:
| 7979425 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | BN4309 | 82347 | MARMON GROUP INC THE FENESTRA DIV /MICHIGAN |
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Techincal Specification:
| FASTENER LENGTH | 6.875 INCHES MINIMUM AND 6.906 INCHES MAXIMUM | | FEATURES PROVIDED | UNFINISHED HEAD | | HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD HEIGHT | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM | | MATERIAL | STEEL COMP 5135 OR STEEL COMP 4130 OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD CLASS | 2A | | THREAD LENGTH | 1.500 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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