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 5998-01-050-0300
NSN 5835-01-346-9575
NSN 5999-01-421-3006
NSN 5975-00-619-8159
NSN 5990-01-500-5412
NSN 5945-00-244-1579
NSN 6130-00-042-7952
NSN 5965-01-426-8325
NSN 5998-00-227-8504
NSN 5925-01-309-0004
NSN 5855-01-143-5468
NSN 5975-01-193-8662