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 5950-00-353-9564
NSN 6320-00-082-5868
NSN 6240-01-610-0789
NSN 5935-01-592-9685
NSN 6620-01-234-1799
NSN 5905-00-286-8564
NSN 5999-00-275-5447
NSN 6145-00-537-7059
NSN 5905-01-403-2806
NSN 5855-01-247-0012
NSN 6320-01-399-6177
NSN 2925-01-363-5978