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 5985-00-161-2723
NSN 6110-01-657-7789
NSN 5965-01-435-6644
NSN 5935-00-901-0915
NSN 6620-01-258-2570
NSN 5895-01-431-8612
NSN 6610-01-472-9219
NSN 6685-01-172-5482
NSN 4140-00-446-1024
NSN 5998-01-234-8285
NSN 5999-01-604-8551
NSN 5990-00-483-0486