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 5905-01-548-0968
NSN 5945-01-303-4075
NSN 5990-01-216-1276
NSN 5996-01-556-2487
NSN 6320-00-831-2227
NSN 5945-00-296-8464
NSN 6610-01-612-0157
NSN 6130-01-290-3310
NSN 5895-00-891-2291
NSN 6320-00-456-2092
NSN 5960-00-925-3721
NSN 5975-01-571-8533