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 5855-01-624-2678
NSN 6240-01-033-6941
NSN 5920-01-158-4517
NSN 5960-01-192-7710
NSN 5915-01-343-0181
NSN 5910-01-202-2689
NSN 5965-01-378-1393
NSN 6650-01-359-8537
NSN 6320-00-261-9136
NSN 5910-01-613-1210
NSN 2925-01-346-9522
NSN 5990-01-254-3197