Washer consists of steel shell with bowded neoprene cushion
A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5910-01-236-2560
NSN 5965-01-199-8362
NSN 4140-00-753-6888
NSN 5910-01-569-7856
NSN 6685-00-785-2783
NSN 5950-01-463-3096
NSN 5935-00-803-0030
NSN 5920-00-809-5231
NSN 5930-01-272-7109
NSN 5920-01-613-2141
NSN 5925-01-045-4251
NSN 5855-01-109-6433