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		                             National Stock Number: 5305-01-413-1822
  Federal Supply Class: 5305
  National Item Identification Number: 014131822
  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:
 | 91251A130 | 2V507 | MCMASTER-CARR SUPPLY COMPANY |  | 91251A130 | 39428 | MCMASTER-CARR SUPPLY CO |   
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  Techincal Specification:
 | THREAD QUANTITY PER INCH | 40 |  | THREAD DIRECTION | RIGHT-HAND |  | FASTENER LENGTH | 0.625 INCHES NOMINAL |  | MATERIAL | STEEL OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | HEAT TREATED GRADE 8, CAGEC 39428 MFR REF SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | OXIDE OVERALL |  | COLOR | BLACK OVERALL |  | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |   | 45.0 ROCKWELL C MAXIMUM OVERALL |  | HEAD STYLE | KNURLED NO. 5 |  | HEAD DIAMETER | 0.205 INCHES NOMINAL |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.094 INCHES NOMINAL |   
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