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 6105-01-375-9058
NSN 6110-00-188-9874
NSN 5895-01-004-3992
NSN 5905-00-362-7372
NSN 5910-01-508-7868
NSN 6220-00-222-4399
NSN 7035-01-007-7181
NSN 6620-01-048-4145
NSN 5945-01-597-9838
NSN 7035-01-617-8406
NSN 5920-01-380-3196
NSN 5925-01-414-7694