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National Stock Number:
5306-99-781-1002
Federal Supply Class:
5306
National Item Identification Number:
997811002
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:
| BLT5037 | K0378 | ROLLS-ROYCE PLC | | BLT5037 ZZ | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| FASTENER LENGTH | 0.560 INCHES NOMINAL AND 0.870 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | GRIP LENGTH | 0.300 INCHES MAXIMUM | | HEAD HEIGHT | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | BSI BS HR650 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | MAJOR DIAMETER OF THD 0.2435 IN. MIN & 0.2480 IN. MAX;MOD THD SERIES DESIGNATOR | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.430 INCHES MINIMUM | | SURFACE FINISH | 125.0 MICROINCHES SIDES OF HEAD | | SURFACE FINISH | 125.0 MICROINCHES TOP OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.560 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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