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		                             National Stock Number: 5305-01-599-0577
  Federal Supply Class: 5305
  National Item Identification Number: 015990577
  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:
 | 9931P-03 | 71483 | DAVID CLARK CO INC |   
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  Techincal Specification:
 | FASTENER LENGTH | 0.250 INCHES NOMINAL |  | HEAD DIAMETER | 0.167 INCHES NOMINAL |  | HEAD HEIGHT | 0.062 INCHES NOMINAL |  | HEAD STYLE | PAN |  | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |  | III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, MACHINE E |  | PROPRIETARY CHARACTERISTICS | PACS |  | NOMINAL THREAD DIAMETER | 0.086 INCHES |  | SCREW MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 |  | SPECIAL FEATURES | SCREW HAS A NYLON STRIP |  | THREAD CLASS | 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 56 |  | THREAD SERIES DESIGNATOR | UNC |   
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