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 6145-00-493-4073
NSN 5985-00-626-4426
NSN 6150-01-363-9299
NSN 5895-00-818-1501
NSN 5990-01-320-1412
NSN 6135-01-633-8502
NSN 6650-00-187-5388
NSN 5910-01-302-8057
NSN 6650-01-168-1659
NSN 6220-01-331-6026
NSN 7035-01-215-2449
NSN 5835-01-470-7700