A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6685-01-367-2476
NSN 5855-01-286-9928
NSN 5910-01-003-6632
NSN 5965-00-156-8562
NSN 6620-01-043-5169
NSN 5998-01-294-3624
NSN 5960-01-377-1907
NSN 5965-01-085-6158
NSN 6645-00-200-2324
NSN 6240-00-850-1407
NSN 6105-00-265-7545
NSN 4140-01-510-3984