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National Stock Number: 5305-01-380-9178
Federal Supply Class: 5305
National Item Identification Number: 013809178
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:
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Techincal Specification:
FASTENER LENGTH | 0.375 INCHES NOMINAL | HEAD DIAMETER | 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM | HEAD STYLE | FLAT CHAMFER | LOCKING FEATURE | | MATERIAL DOCUMENT AND CLASSIFICATION | | MATERIAL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | THREAD LENGTH | 0.313 INCHES NOMINAL | THREAD CLASS | 2A | THREAD DIRECTION | RIGHT-HAND | THREAD QUANTITY PER INCH | 20 | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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