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 5905-00-812-7961
NSN 5910-00-524-1019
NSN 2925-00-391-0331
NSN 6135-00-405-1989
NSN 6685-00-938-2808
NSN 6320-00-116-3658
NSN 5999-01-051-9807
NSN 6685-01-375-0425
NSN 5895-01-050-8392
NSN 5915-01-473-1752
NSN 6620-01-478-0535
NSN 7035-01-053-4769