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 5945-01-165-9919
NSN 5905-01-367-1630
NSN 6105-01-412-0811
NSN 5925-01-020-4303
NSN 5998-00-959-4539
NSN 5996-01-633-7979
NSN 5935-01-029-6622
NSN 6645-01-332-8982
NSN 2925-00-628-5610
NSN 7035-01-284-3535
NSN 5910-01-648-3367
NSN 5895-00-538-7929