A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-01-519-1387
NSN 6620-00-965-8075
NSN 5999-01-146-7733
NSN 6650-00-412-5988
NSN 6620-01-243-5281
NSN 6110-01-428-8915
NSN 5945-01-207-1732
NSN 6150-01-037-6981
NSN 6645-00-963-9491
NSN 5975-01-275-2767
NSN 6130-01-426-8841
NSN 5930-01-399-2262