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 5998-00-598-6237
NSN 6685-01-034-5166
NSN 6130-00-175-8066
NSN 6105-01-004-0456
NSN 5920-01-104-0508
NSN 5999-01-157-9643
NSN 5835-01-434-0790
NSN 5930-00-938-6591
NSN 6685-01-360-2628
NSN 5925-00-960-5214
NSN 5950-00-463-4286
NSN 5905-01-551-1724