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National Stock Number:
5305-01-406-7434
Federal Supply Class:
5305
National Item Identification Number:
014067434
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:
| 0.250-20UNC-2A X 0.500 316 CRES | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED | | 1/4-20UNC-2A,1/ 2"LG, CRES 316 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | 608-7120913 ITE | 53711 | NAVAL SEA SYSTEMS COMMAND | | 608-712913 ITEM 63 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 1/4-20UNC-2A,1/ 2"LG, CRES 316 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | 1/4-20UNC-2A,1/ 2'LG, CRES 316 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | MS51957-79S316 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MS51957-79 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
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Techincal Specification:
| FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | HEAD DIAMETER | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM | | HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM | | HEAD STYLE | PAN | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | STEEL COMP 316 | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR FED-STD66 FED STD SINGLE MATERIAL RESPONSE | | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE | | SCREW SURFACE TREATMENT | PASSIVATE | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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