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 6145-01-219-8505
NSN 6240-00-570-9884
NSN 6110-01-348-2951
NSN 6110-00-739-6692
NSN 5855-01-233-2767
NSN 5965-01-490-2547
NSN 5999-01-492-5882
NSN 5998-01-598-3262
NSN 2925-01-625-6841
NSN 6130-01-047-3107
NSN 5950-01-631-7950
NSN 5996-01-420-2745