l MIL-S-17243D STONE, COMMUTATOR SURFACING (NO S/S DOCUMENT)
l MIL-S-17346B(1) NOT 2 STONE, COMMUTATOR BURNISHING (FLEXIBLE ABRASIVE) (S/S BY A-A-58052)
l MIL-S-17708C NOT 1 STONE, ELECTRICAL CONTACT BRUSH SEATER (NO S/S DOCUMENT)