A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5910-01-334-4684
NSN 6610-01-524-0636
NSN 6145-01-582-2161
NSN 5985-00-716-4156
NSN 6135-01-295-2708
NSN 5935-01-631-4628
NSN 5895-00-216-5849
NSN 6685-01-394-3330
NSN 5920-01-596-4704
NSN 6145-01-643-5898
NSN 5999-01-541-4178
NSN 6320-01-381-7023