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National Stock Number:
5305-01-383-4089
Federal Supply Class:
5305
National Item Identification Number:
013834089
Description:
SCREW,CAP,HEXAGON HEAD
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 12387152-8L | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| FASTENER LENGTH | 1.000 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM THREADS | | HEAD HEIGHT | 0.163 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | LOCKING FEATURE | PATCH OR STRIP THREADS | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM F593 ASSN STD SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | PLASTIC POLYAMIDE (NYLON) LOCKING FEATURE | | MATERIAL | STEEL COMP 431 FASTENER | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 140000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT | PASSIVATE FASTENER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | WIDTH BETWEEN FLATS | 0.437 INCHES NOMINAL |
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