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National Stock Number:
5305-01-486-3348
Federal Supply Class:
5305
National Item Identification Number:
014863348
Description:
SCREW,CAP,SOCKET HEAD
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
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Manufacturer Information:
| 1/2-13UNC-3AX1.250 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | 6853526 ITEM NO 38 | 53711 | NAVAL SEA SYSTEMS COMMAND | | FF-S-86 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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Techincal Specification:
| FASTENER LENGTH | 1.250 INCHES NOMINAL | | HEAD DIAMETER | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM | | HEAD HEIGHT | 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | HEAD STYLE | FLAT FILLISTER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286, CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 400 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SPECIAL FEATURES | SELFLOCKING (NYLOK) | | WIDTH ACROSS FLATS | 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.250 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 13 | | THREAD SERIES DESIGNATOR | UNC |
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