A trunicated cone-shaped metal item generally tapered along its entire peripheral length, with a centrally located hole. It may be split (cut) through the material parallel to the axis.
NSN 6150-00-780-7747
NSN 5905-01-383-7034
NSN 5925-00-280-2273
NSN 6240-01-414-9529
NSN 4140-01-599-1254
NSN 5835-01-580-0446
NSN 6135-01-293-3066
NSN 5925-01-539-0576
NSN 5999-00-056-7154
NSN 2925-01-642-3255
NSN 6220-01-447-3657
NSN 5915-01-122-2988