A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 4140-01-354-2686
NSN 5965-01-343-6983
NSN 5996-00-251-3908
NSN 5965-01-463-8176
NSN 6220-01-422-6949
NSN 5960-01-604-1158
NSN 5975-01-254-2851
NSN 6610-01-301-3513
NSN 5985-01-558-7104
NSN 5965-00-223-6354
NSN 5950-00-604-9226
NSN 6135-01-600-8345