A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5998-00-455-5544
NSN 6105-01-105-0042
NSN 5905-01-173-9048
NSN 5895-00-018-8698
NSN 5925-01-584-8564
NSN 5996-01-554-2463
NSN 6620-01-114-0841
NSN 5999-01-577-4248
NSN 5910-01-355-6972
NSN 6610-01-396-5628
NSN 5930-00-949-1166
NSN 5905-01-498-3369