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 7035-01-062-0184
NSN 5855-00-916-2236
NSN 7035-01-210-5111
NSN 6220-01-178-0171
NSN 5920-00-199-9514
NSN 6220-01-459-6337
NSN 6320-01-160-7757
NSN 5990-01-249-8212
NSN 6130-01-605-1850
NSN 5996-01-082-3730
NSN 6150-01-298-3691
NSN 5960-01-295-8924