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 6105-01-566-1293
NSN 6240-00-451-3016
NSN 6620-01-345-1336
NSN 6320-01-029-4220
NSN 6620-01-116-2632
NSN 6240-01-116-3382
NSN 5965-01-271-9990
NSN 4140-01-477-5050
NSN 6105-01-617-9713
NSN 5905-00-946-9103
NSN 5975-00-463-6445
NSN 5930-01-391-5671