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 6145-00-526-3056
NSN 6105-01-042-6633
NSN 5855-00-427-7848
NSN 5835-01-555-8963
NSN 6685-00-633-2506
NSN 2925-01-364-7926
NSN 5975-01-376-6480
NSN 5999-01-128-1414
NSN 5975-00-719-4942
NSN 6130-01-642-1066
NSN 5975-00-052-4591
NSN 5996-00-847-8342