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 5965-00-052-9184
NSN 5985-01-166-1037
NSN 6150-00-191-8386
NSN 6220-00-194-3827
NSN 5985-00-407-0213
NSN 5920-01-258-6360
NSN 6130-00-128-0034
NSN 5895-01-558-3925
NSN 5996-01-304-1088
NSN 6240-01-188-7282
NSN 5990-01-425-2175
NSN 6685-00-395-3272