A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-00-312-2036
NSN 5975-00-659-6531
NSN 5935-01-547-5339
NSN 5960-01-029-4253
NSN 5945-01-513-7385
NSN 6620-01-343-1625
NSN 2925-01-519-3221
NSN 5985-01-111-8755
NSN 6135-00-100-0485
NSN 5835-01-488-6678
NSN 5915-00-927-1527
NSN 6645-01-146-1548