A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5990-00-471-4975
NSN 7035-01-062-0184
NSN 6220-01-441-8662
NSN 5915-01-534-8603
NSN 5950-01-454-0464
NSN 5945-00-276-9274
NSN 2925-01-345-5463
NSN 6645-01-258-6928
NSN 5915-01-476-7124
NSN 5910-01-199-8843
NSN 5960-01-170-4057
NSN 6145-00-265-6205