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		                        | National Stock Number:
 5305-01-455-5641
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 014555641
 
 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:
 
 | 211036312 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 801-6405530 FIND 38 | 53711 | NAVAL SEA SYSTEMS COMMAND | 
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 Techincal Specification:
 
 | THREAD SERIES DESIGNATOR | UNRC |  | NOMINAL THREAD DIAMETER | 0.625 INCHES |  | THREAD QUANTITY PER INCH | 11 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.250 INCHES NOMINAL |  | FASTENER LENGTH | 1.250 INCHES NOMINAL |  | MATERIAL | STEEL COMP 4340 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD ALL MATERIAL RESPONSES OVERALL |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.921 INCHES MINIMUM |  | HEAD HEIGHT | 0.616 INCHES MINIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL | 
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