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.
NSN 6240-01-025-9389
NSN 5945-01-369-7358
NSN 6650-01-352-0424
NSN 5965-00-234-7338
NSN 5920-01-555-3597
NSN 6145-01-118-3901
NSN 6105-01-592-3152
NSN 5985-01-414-2621
NSN 6105-00-422-2713
NSN 5855-00-361-0167
NSN 5945-00-879-7539
NSN 5935-01-157-9778