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 5960-01-512-0233
NSN 5925-01-541-1646
NSN 5990-01-264-6512
NSN 6220-01-043-6500
NSN 6240-00-578-7894
NSN 6620-00-905-6590
NSN 5910-00-541-1381
NSN 5960-00-151-7576
NSN 6145-01-538-5022
NSN 7035-01-154-0796
NSN 5925-01-634-0664
NSN 6145-01-146-9668