A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-00-989-9632
NSN 6105-00-938-8503
NSN 6610-01-316-3547
NSN 6240-00-924-7526
NSN 6645-01-117-6156
NSN 5990-01-322-9781
NSN 4140-01-326-1249
NSN 5935-00-249-3319
NSN 5950-00-862-9994
NSN 5895-01-067-8771
NSN 6645-01-473-1371
NSN 5905-01-380-3732