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 6240-01-123-9040
NSN 6145-01-205-4798
NSN 6645-01-399-0661
NSN 5915-01-541-8883
NSN 6685-01-163-3319
NSN 6650-01-011-9093
NSN 6645-00-778-2839
NSN 6135-00-812-9039
NSN 5950-01-314-1501
NSN 5960-01-512-0233
NSN 5996-00-222-4930
NSN 5999-00-290-5898