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		                             National Stock Number: 5305-01-431-1311
  Federal Supply Class: 5305
  National Item Identification Number: 014311311
  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:
 | 211058888 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 754-6407100 IEM 12 | 53711 | NAVAL SEA SYSTEMS COMMAND |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNRC |  | NOMINAL THREAD DIAMETER | 0.500 INCHES |  | THREAD QUANTITY PER INCH | 13 |  | THREAD CLASS | 3A |  | FASTENER LENGTH | 5.500 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |   | PLASTIC POLYAMIDE LOCKING FEATURE |  | HEAD STYLE | FLAT FILLISTER |  | HEAD DIAMETER | 0.735 INCHES MINIMUM AND |   | 0.750 INCHES MAXIMUM |  | HEAD HEIGHT | 0.492 INCHES MINIMUM AND |   | 0.500 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.375 INCHES NOMINAL |  | LOCKING FEATURE | PATCH OR |   | PELLET OR |   | STRIP THREADS |   
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