A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5895-00-982-8759
NSN 2925-01-262-1418
NSN 5855-01-344-8688
NSN 5960-00-974-4003
NSN 5945-01-411-6180
NSN 5990-01-009-3634
NSN 5920-00-130-3593
NSN 4140-00-848-6245
NSN 5920-00-541-1119
NSN 6130-00-352-2317
NSN 5965-00-199-4456
NSN 5996-00-100-4932