An item for connecting two sets of grooves/keys (as of different diameters), changing groove/key size and/or spacing, or for changing groove/key configuration for uses not originally intended.
NSN 5930-01-463-3499
NSN 7035-01-558-4195
NSN 7035-00-238-3662
NSN 5950-00-800-7254
NSN 6610-01-487-6843
NSN 5855-00-256-5562
NSN 5915-01-390-3462
NSN 6135-01-483-1501
NSN 7035-01-362-4924
NSN 6650-01-422-1037
NSN 6610-01-298-1517
NSN 5835-00-185-4919