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		                        | National Stock Number:
 5305-01-285-2020
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 012852020
 
 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:
 
 | 1562278-1 | 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 | 0.235 INCHES MINIMUM AND |  |  | 0.327 INCHES MAXIMUM |  | FASTENER LENGTH | 0.297 INCHES MINIMUM AND |  |  | 0.327 INCHES MAXIMUM |  | MATERIAL | STEEL OVERALL |  | SURFACE TREATMENT | CADMIUM AND |  |  | CHROMATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |  |  | 43.0 ROCKWELL C MAXIMUM OVERALL |  | HEAD STYLE | BINDING |  | HEAD DIAMETER | 0.298 INCHES MINIMUM AND |  |  | 0.313 INCHES MAXIMUM |  | HEAD HEIGHT | 0.082 INCHES NOMINAL |  | INTERNAL DRIVE STYLE | SIX SPLINE |  | SPLINE MINOR DIAMETER | 0.080 INCHES MINIMUM AND |  |  | 0.082 INCHES MAXIMUM |  | SPLINE MAJOR DIAMETER | 0.098 INCHES NOMINAL |  | SPLINE WIDTH | 0.021 INCHES MINIMUM AND |  |  | 0.022 INCHES MAXIMUM |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | 
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