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National Stock Number:
5305-01-485-4244
Federal Supply Class:
5305
National Item Identification Number:
014854244
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:
| 0.250-20UNRC-3A X1.250NICUAL | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | 0.250-20UNRC-3AX1.250NICUAL | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED | | 721-7070233-7 | 53711 | NAVAL SEA SYSTEMS COMMAND | | H861-1502-7 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| FASTENER LENGTH | 1.250 INCHES NOMINAL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | NICKEL ALLOY | | SPECIAL FEATURES | SCREW IS SELF-LOCKING; HAS A FLAT HEAD | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD SERIES DESIGNATOR | UNRC | | THREAD QUANTITY PER INCH | 20 |
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