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 6220-01-410-8592
NSN 5985-01-430-5504
NSN 6145-01-393-8103
NSN 5905-00-286-8564
NSN 6645-01-558-5057
NSN 6610-01-045-4707
NSN 5930-01-269-4403
NSN 6220-01-253-5172
NSN 6620-01-643-1483
NSN 5835-00-729-9305
NSN 5965-01-028-6206
NSN 6645-01-656-6416