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		                             National Stock Number: 5305-01-466-5966
  Federal Supply Class: 5305
  National Item Identification Number: 014665966
  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:
 | 3176207-C-16 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 3176207-C-160 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |  | 3176207-C-160 | 53711 | NAVAL SEA SYSTEMS COMMAND |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.375 INCHES |  | THREAD QUANTITY PER INCH | 16 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.085 INCHES MINIMUM |  | FASTENER LENGTH | 1.210 INCHES MINIMUM AND |   | 1.250 INCHES MAXIMUM |  | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |   | STEEL UNS K03104 FASTENER |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |  | SURFACE TREATMENT | ZINC AND |   | CHROMATE FASTENER |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |  | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.550 INCHES MINIMUM AND |   | 0.562 INCHES MAXIMUM |  | HEAD HEIGHT | 0.368 INCHES MINIMUM AND |   | 0.375 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |  | LOCKING FEATURE | PATCH THREADS |   
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