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 6650-01-252-8190
NSN 5895-00-072-7709
NSN 6130-01-454-7513
NSN 4140-00-499-8330
NSN 5930-01-446-7322
NSN 6110-00-085-3275
NSN 5925-01-146-6691
NSN 6685-01-462-5866
NSN 5945-01-406-7167
NSN 6150-00-371-9431
NSN 6220-01-106-3215
NSN 5950-01-573-5081