A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-01-509-1577
NSN 5996-00-848-9090
NSN 5855-00-688-9954
NSN 5950-01-109-2289
NSN 5925-00-636-5683
NSN 6320-01-322-8340
NSN 5950-01-423-9397
NSN 7035-01-342-7620
NSN 6645-00-764-3355
NSN 5985-01-290-2615
NSN 6130-01-607-6305
NSN 6135-00-753-2276