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 6135-00-826-4798
NSN 5855-01-089-2248
NSN 6650-00-197-7563
NSN 5990-00-813-9405
NSN 6610-00-119-2839
NSN 5835-01-190-5192
NSN 5920-00-259-7294
NSN 6105-00-415-9877
NSN 5915-01-176-7004
NSN 5925-01-553-7746
NSN 6240-01-047-9930
NSN 6645-01-297-5561