A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6650-00-842-5463
NSN 2925-01-098-9549
NSN 5895-00-247-0180
NSN 6220-01-014-7207
NSN 5855-01-028-8387
NSN 5910-01-498-2124
NSN 6110-01-172-0451
NSN 6620-00-251-0569
NSN 2925-00-491-3549
NSN 5985-01-359-4207
NSN 5996-01-052-1693
NSN 6145-00-013-9939