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 6620-01-206-2462
NSN 4140-00-814-5987
NSN 6220-01-242-9901
NSN 5960-01-524-8642
NSN 5855-01-417-1315
NSN 6685-00-342-9408
NSN 6650-00-175-7520
NSN 6220-01-650-4883
NSN 6135-01-324-7718
NSN 5920-00-246-5992
NSN 6145-01-571-0921
NSN 5895-00-225-9589