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 5975-01-089-1351
NSN 5925-01-266-1093
NSN 5985-01-120-5467
NSN 5895-01-202-1288
NSN 5965-00-240-3819
NSN 6650-00-216-6365
NSN 5855-00-337-3679
NSN 6150-01-109-9425
NSN 5996-01-328-4647
NSN 6645-01-366-2091
NSN 5945-00-782-8157
NSN 6220-01-246-7534