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		                             National Stock Number: 5310-01-466-7986
  Federal Supply Class: 5310
  National Item Identification Number: 014667986
  Description: NUT,SELF-LOCKING,CASTELLATED,HEX
  Detail: A NUT HAVING 6 FLAT SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE" FEATURE IN CRITICAL APPLICATIONS. EXCLUDES NUT (1), SELF-LOCKING, SLOTTED, HEXAGON.
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  Manufacturer Information:
 | 0961-043-0030-P184-21 | 4K628 | OBERDORFER PUMPS INC |  | A1642 | 4K628 | OBERDORFER PUMPS INC |   
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  Techincal Specification:
 | NOMINAL THREAD SIZE | 1.020 INCHES |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 1"-20 |  | THREAD SERIES | UNEF |   
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