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 6610-00-248-1559
NSN 5985-00-269-2599
NSN 6220-01-031-6918
NSN 6645-01-357-1393
NSN 5920-01-179-1363
NSN 5920-01-215-0497
NSN
NSN 5965-01-434-4095
NSN 6145-00-421-0968
NSN 5835-01-200-7153
NSN 5998-01-542-9673
NSN 5996-00-272-2560