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National Stock Number:
5305-01-628-6355
Federal Supply Class:
5305
National Item Identification Number:
016286355
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:
| 0.250-20UNC-3AX0.375 STL | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | 60-16-9361 | 96169 | ELECTRIC BOAT CORPORATION | | 845-4558738 ITEM 71 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 0.375 INCHES NOMINAL | | HEAD DIAMETER | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | FF-S-86 FED STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL UNS K03104 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | SELF LOCKING | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.375 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 20 | | WIDTH ACROSS FLATS | 0.4375 INCHES NOMINAL |
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