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 6150-01-411-3374
NSN 5910-00-081-9173
NSN 6320-01-624-0193
NSN 5999-01-603-5337
NSN 6135-00-134-6648
NSN 6130-01-646-0893
NSN 5925-01-356-0445
NSN 6320-00-032-4853
NSN 6685-01-069-4336
NSN 6620-01-569-4621
NSN 5998-01-435-5462
NSN 5920-01-641-7876