A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6685-01-481-8486
NSN 5920-01-418-0863
NSN 6320-01-157-9076
NSN 5945-01-267-1951
NSN 5905-01-243-1784
NSN 5996-01-478-6571
NSN 6135-01-278-9717
NSN 5965-00-524-5521
NSN 5895-01-103-0612
NSN 2925-01-069-5324
NSN 5855-01-454-1538
NSN 5915-00-493-1740