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 5855-00-494-9581
NSN 2925-01-364-7926
NSN 6320-01-050-1290
NSN 5965-01-204-8505
NSN 6240-01-603-0143
NSN 5960-01-424-1781
NSN 7035-01-071-5214
NSN 5920-01-519-3615
NSN 5930-01-268-6384
NSN 5985-01-598-4702
NSN 5990-00-949-0166
NSN 2925-00-614-1758