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 5996-00-888-1180
NSN 5999-01-271-8846
NSN 5985-01-512-4060
NSN 2925-01-604-8984
NSN 5985-01-537-6281
NSN 5895-01-508-0670
NSN 4140-00-998-7691
NSN 5925-01-250-1492
NSN 6685-01-261-6849
NSN 5930-00-051-9048
NSN 6610-01-385-1771
NSN 5945-01-440-9803