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 6620-01-550-6059
NSN 6650-01-513-2644
NSN 5996-00-956-3325
NSN 6150-01-146-3462
NSN 5950-00-436-3095
NSN 6105-01-292-3874
NSN 6610-00-410-2866
NSN 5945-00-444-6701
NSN 5985-01-036-1426
NSN 5835-00-632-8621
NSN 5960-00-115-2199
NSN 5998-01-353-4666