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 5965-00-280-4182
NSN 5975-01-145-2869
NSN 6220-01-565-9588
NSN 5930-01-207-9116
NSN 5835-00-187-1481
NSN 6620-01-412-0938
NSN 5895-01-434-7470
NSN 2925-00-824-2186
NSN 5998-01-102-9324
NSN 6110-00-359-5571
NSN 6130-01-260-3631
NSN 5998-00-254-1934