Reverse mounted
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 5950-01-180-4032
NSN 5975-01-003-6746
NSN 5945-00-842-0020
NSN 6320-01-072-2073
NSN 6145-00-072-4878
NSN 5915-00-099-0347
NSN 6110-00-233-8121
NSN 5990-01-025-7466
NSN 6135-01-101-5039
NSN 6130-01-463-7918
NSN 6135-01-153-8027
NSN 6610-01-051-6275