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National Stock Number:
5306-01-225-6307
Federal Supply Class:
5306
National Item Identification Number:
012256307
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:
| M69HS420-40C | 14438 | NYLOK LLC | | NM142HS420N40C | 26233 | NYLOK LLC |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | FEAT | | EXTENDED WASHER THICKNESS | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | FASTENER LENGTH | 2.469 INCHES MINIMUM AND 2.531 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 36.0 ROCKWELL C NOMINAL AND 43.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | LOCKING FEATURE | PELLET THREADS | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL | | WIDTH BETWEEN FLATS | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 1.000 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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