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 6610-01-222-0582
NSN 6685-00-596-8765
NSN 5985-00-979-5930
NSN 6135-00-405-1989
NSN 6110-01-200-7447
NSN 5935-01-253-9856
NSN 5905-00-274-3789
NSN 5925-00-081-3823
NSN 6145-01-207-0445
NSN 6130-00-216-7376
NSN 6610-01-168-7943
NSN 6320-00-646-3311