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 5990-00-574-5777
NSN 6145-01-179-9854
NSN 5998-00-978-4474
NSN 5925-01-393-8257
NSN 5999-00-196-3635
NSN 6130-01-340-8863
NSN 6685-01-355-2366
NSN 6145-00-489-3574
NSN 5996-00-386-2236
NSN 6220-00-478-6480
NSN 5930-01-157-4712
NSN 5950-01-390-1622