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National Stock Number:
5305-01-326-3785
Federal Supply Class:
5305
National Item Identification Number:
013263785
Description:
SCREW,MACHINE
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
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Manufacturer Information:
| 250-20UNC2AX100DEGX1.00LG | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | 4592604-27 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 6162806-22 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.000 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC | | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | CRITICALITY CODE JUSTIFICATION | FEAT | | FASTENER LENGTH | 1.000 INCHES NOMINAL | | HEAD DIAMETER | 0.475 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | SLOT | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | STEEL CORROSION RESISTING | | SPECIAL FEATURES | MILITARY SENSITIVE WARFARE | | THREAD CLASS | 2A |
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