A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6645-01-553-3599
NSN 7035-01-131-1168
NSN 2925-01-143-0092
NSN 6145-01-408-6272
NSN 2925-01-032-3814
NSN 5950-01-235-8760
NSN 6130-00-266-7496
NSN 5895-01-167-1023
NSN 5905-00-638-6776
NSN 2925-01-609-8464
NSN 5905-00-666-4983
NSN 6685-01-606-2802