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		                        | National Stock Number:
 5305-01-317-9918
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 013179918
 
 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:
 
 | 2149967 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | 
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 Techincal Specification:
 
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.164 INCHES |  | THREAD QUANTITY PER INCH | 32 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.423 INCHES MINIMUM |  | FASTENER LENGTH | 0.485 INCHES MINIMUM AND |  |  | 0.515 INCHES MAXIMUM |  | MATERIAL | STEEL COMP 4037 OR |  |  | STEEL COMP 4042 OR |  |  | STEEL COMP 8740 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL |  | SURFACE TREATMENT | NICKEL OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290 CL 1,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | HEAD STYLE | BUTTON |  | HEAD DIAMETER | 0.298 INCHES MINIMUM AND |  |  | 0.312 INCHES MAXIMUM |  | HEAD HEIGHT | 0.077 INCHES MINIMUM AND |  |  | 0.087 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.094 INCHES MINIMUM AND |  |  | 0.095 INCHES MAXIMUM | 
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