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		                        | National Stock Number:
 5305-01-029-1526
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 010291526
 
 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-059 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 3176207C059 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | 
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 Techincal Specification:
 
 | NOMINAL THREAD DIAMETER | 0.190 INCHES |  | THREAD QUANTITY PER INCH | 24 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.292 INCHES MINIMUM AND |  |  | 0.375 INCHES MAXIMUM |  | FASTENER LENGTH | 0.375 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | SURFACE TREATMENT | ZINC OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325 TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND |  |  | 45.0 ROCKWELL C MAXIMUM OVERALL |  | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |  | MINIMUM YIELD STRENGTH | 150000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.303 INCHES MINIMUM AND |  |  | 0.312 INCHES MAXIMUM |  | HEAD HEIGHT | 0.185 INCHES MINIMUM AND |  |  | 0.190 INCHES MAXIMUM |  | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |  | SPECIAL FEATURES | CRITICAL ITEM HYDROGEN EMBRITTLEMENT REQD;LOCKING FEATURE PLASTIC POLYAMIDE STRIP;SOCKET INTERNAL DRIVE STYLE;THD SERIES DESIGNATOR-NC | 
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