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National Stock Number:
5306-01-164-3991
Federal Supply Class:
5306
National Item Identification Number:
011643991
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:
| B478272 | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 1.097 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | THREAD LENGTH | 0.723 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | SURFACE TREATMENT | SILVER OVERALL | | HEAD HEIGHT | 0.280 INCHES MINIMUM AND | | 0.290 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL | | EXTENDED WASHER DIAMETER | 0.433 INCHES MINIMUM AND | | 0.438 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.140 INCHES NOMINAL | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | PRECIOUS MATERIAL | SILVER | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | K0378 | | DESIGN CONTROL REFERENCE | B478272 |
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