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		                             National Stock Number: 5305-01-439-3419
  Federal Supply Class: 5305
  National Item Identification Number: 014393419
  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:
 | 91252A110 | 39428 | MCMASTER-CARR SUPPLY CO |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNF |  | NOMINAL THREAD DIAMETER | 0.138 INCHES |  | THREAD QUANTITY PER INCH | 40 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.450 INCHES MINIMUM |  | FASTENER LENGTH | 0.500 INCHES NOMINAL |  | MATERIAL | STEEL UNS K03104 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | COLOR | BLACK OVERALL |  | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT COUNTERSUNK |  | HEAD DIAMETER | 0.218 INCHES MINIMUM AND |   | 0.226 INCHES MAXIMUM |  | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |   | 101.0 DEGREES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.109 INCHES NOMINAL |   
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