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 5855-01-100-3272
NSN 6145-01-282-1596
NSN 4140-01-161-1048
NSN 5985-01-354-0392
NSN 5950-01-357-6676
NSN 5905-00-421-5427
NSN 5905-00-058-9513
NSN 5930-01-461-9864
NSN 5920-00-670-4674
NSN 5960-00-304-8668
NSN 6610-01-502-5417
NSN 7035-00-703-3535