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		                             National Stock Number: 5305-01-432-1763
  Federal Supply Class: 5305
  National Item Identification Number: 014321763
  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:
 | 3/8-16X1-1/2 SHCS | 70034 | A G DAVIS & ENGINEERING/AA GAGE |  | 91251A628 | 39428 | MCMASTER-CARR SUPPLY CO |  | AES14U375A50BB3L71 | 0R503 | AMERICAN SOCIETY OF MECHANICAL ENGINEERS INC |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.375 INCHES |  | THREAD QUANTITY PER INCH | 16 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.250 INCHES MAXIMUM |  | FASTENER LENGTH | 1.500 INCHES NOMINAL |  | MATERIAL | STEEL UNS K03104 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | OXIDE OVERALL |  | COLOR | BLACK OVERALL |  | HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND |   | 45.0 ROCKWELL C MAXIMUM OVERALL |  | MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.550 INCHES MINIMUM AND |   | 0.562 INCHES MAXIMUM |  | HEAD HEIGHT | 0.368 INCHES MINIMUM AND |   | 0.375 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |   
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