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 6685-01-366-9640
NSN 5996-01-633-7979
NSN 6135-01-631-0269
NSN 6130-01-391-4572
NSN 5905-01-181-8849
NSN 6645-01-450-0809
NSN 5990-01-503-0194
NSN 5985-01-436-9021
NSN 5999-01-166-0255
NSN 5950-00-683-0510
NSN 5965-00-529-0602
NSN 5945-01-179-5147