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		                             National Stock Number: 5305-01-477-0638
  Federal Supply Class: 5305
  National Item Identification Number: 014770638
  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:
 | 0.500-13UNC-3AX1.0LG GR400 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | 2643-820-05-34 | 96169 | ELECTRIC BOAT CORPORATION |  | 845-7286110-34 | 53711 | NAVAL SEA SYSTEMS COMMAND |   
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  Techincal Specification:
 | HEAD STYLE | PAN NO. 2 |  | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |  | MATERIAL | NICKEL ALLOY OVERALL |  | PROPRIETARY CHARACTERISTICS | PACS |  | NOMINAL THREAD DIAMETER | 0.500 INCHES |  | SPECIAL FEATURES | ITEM IS SELF-LOCKING; PART OFBALL VALVE ASSEMBLY, MANUAL TYPE I, 1 - 1/2 700 PSI |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.000 INCHES NOMINAL |  | THREAD QUANTITY PER INCH | 13 |  | THREAD SERIES DESIGNATOR | UNC |   
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