A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5930-01-617-7270
NSN 6320-00-643-0958
NSN 5945-01-553-4102
NSN 7035-00-009-8705
NSN 5960-01-407-1350
NSN 5905-00-661-2395
NSN 6685-01-304-8054
NSN 5920-01-444-4082
NSN 6650-01-122-6734
NSN 6620-00-248-6950
NSN 5915-01-504-2312
NSN 6610-01-295-6327