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 6220-00-299-7749
NSN 5945-00-227-7030
NSN 5960-01-365-5729
NSN 5965-01-272-4199
NSN 6145-00-278-0697
NSN 5950-01-200-4500
NSN 6645-01-616-5583
NSN 6240-00-003-6435
NSN 5835-01-128-9331
NSN 5935-01-309-2367
NSN 2925-01-516-0124
NSN 5960-01-336-3130