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		                        | National Stock Number:
 5340-01-417-3889
 
 Federal Supply Class:
 5340
 
 National Item Identification Number:
 014173889
 
 Description:
 INSERT,SELF-LOCKING
 
 Detail:
 A NONMETALLIC UNTHREADED ITEM GENERALLY ROUND IN CROSS-SECTIONAL SHAPE WHICH, WHEN PLACED ON/IN A MACHINED-OUT PORTION OF THE THREADS OF A SCREW OR BOLT, OR INSERTED INTO THE MACHINED-OUT PORTION OF THE THREADS OF A NUT, LOCKS THE ITEM, TO WHICH IT IS FIXED, TO THE ATTACHED MATING MEMBER AND PREVENTS LOOSENING DURING EXCESSIVE VIBRATION. EXCLUDES BOLT, SELF-LOCKING; NUT, SELF-LOCKING (AS MODIFIED); SCREW, SELF-LOCKING; AND INSERT, SCREW THREAD.
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 Manufacturer Information:
 
 | 211067411 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 218001743 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 556-6406378-MPBR-A11 | 53711 | NAVAL SEA SYSTEMS COMMAND |  | 556-6406378-MPBR-B11 | 53711 | NAVAL SEA SYSTEMS COMMAND | 
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