A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5895-01-428-4494
NSN 5930-01-363-6414
NSN 6320-01-113-7647
NSN 6220-00-717-5099
NSN 6110-00-458-2083
NSN 5925-00-286-8502
NSN 6135-00-162-2437
NSN 6105-01-463-8557
NSN 5999-01-476-5185
NSN 5910-01-169-0953
NSN 6685-00-374-9285
NSN 6610-01-095-7219