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		                             National Stock Number: 5305-01-599-3882
  Federal Supply Class: 5305
  National Item Identification Number: 015993882
  Description: SCREW,MACHINE
  Detail: AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN./1.5 MM) OR LARGER, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), BUT MAY ALSO BE DESIGNED FOR EXTERNAL WRENCHING. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.
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  Manufacturer Information:
 | 91771A112 | 39428 | MCMASTER-CARR SUPPLY CO |   
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  Techincal Specification:
 | COUNTERSINK ANGLE | 82.0 DEGREES NOMINAL |  | FASTENER LENGTH | 0.625 INCHES NOMINAL |  | HARDNESS RATING | 80.0 ROCKWELL B NOMINAL |  | HEAD DIAMETER | 0.212 INCHES NOMINAL |  | HEAD STYLE | FLAT COUNTERSUNK |  | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |  | NOMINAL THREAD DIAMETER | 0.112 INCHES |  | SCREW MATERIAL | STEEL CORROSION RESISTING |  | SPECIAL FEATURES | PACKS OF 100 |  | THREAD CLASS | 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.558 INCHES NOMINAL |  | THREAD QUANTITY PER INCH | 40 |  | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |   
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