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National Stock Number:
5306-00-704-2972
Federal Supply Class:
5306
National Item Identification Number:
007042972
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:
| S6110-21107 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| FASTENER LENGTH | 3.334 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 1.047 INCHES NOMINAL | | HEAD HEIGHT | 0.187 INCHES NOMINAL | | HEAD STYLE | ROUND W/WRENCH FLATS | | MATERIAL | STEEL COMP E4340 OVERALL | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | WIDTH BETWEEN FLATS | 0.865 INCHES NOMINAL | | SURFACE FINISH | 100.0 MICROINCHES OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNEF |
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