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 5920-00-484-3185
NSN 6150-01-608-4868
NSN 6110-01-043-9051
NSN 5895-01-115-3955
NSN 4140-01-605-1706
NSN 5985-01-178-0316
NSN 5915-01-142-0053
NSN 5920-01-558-2176
NSN 5905-01-180-7143
NSN 5895-01-423-8636
NSN 6130-01-391-9049
NSN 5925-00-114-2253