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 6620-01-207-0667
NSN 5855-01-629-4532
NSN 6240-01-657-4133
NSN 6145-00-071-1154
NSN 5855-00-688-9954
NSN 5895-00-218-1355
NSN 6220-01-518-0572
NSN 5920-00-843-2286
NSN 5905-00-627-5888
NSN 5910-00-791-8127
NSN 6105-01-406-1425
NSN 5960-00-943-9411