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 5945-01-334-5401
NSN 5905-01-561-5032
NSN 5895-00-045-9695
NSN 5990-00-170-4239
NSN 6130-01-010-6892
NSN 5990-01-411-5930
NSN 5905-01-020-9457
NSN 5975-01-273-0209
NSN 5999-00-707-6083
NSN 5965-00-170-5254
NSN 6620-01-555-5218
NSN 6105-00-080-5537