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 5998-00-180-0735
NSN 7035-00-557-5570
NSN 6105-01-586-0341
NSN 5985-00-566-5815
NSN 5985-01-513-7348
NSN 5905-01-430-2541
NSN 6240-01-184-5004
NSN 6240-01-230-8070
NSN 5835-00-143-4153
NSN 6320-01-089-9086
NSN 5975-01-556-6719
NSN 6220-01-182-5845