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 6620-01-214-7520
NSN 5965-01-215-0993
NSN 6110-01-025-6139
NSN 5835-01-561-2959
NSN 6320-01-515-7913
NSN 5935-00-906-3995
NSN 5950-00-986-8397
NSN 5996-01-518-4674
NSN 5990-01-357-6175
NSN 6685-01-586-0182
NSN 6220-00-138-5969
NSN 5945-00-529-0409