The base code '14144' specifies a self-locking, lightweight, castellated nut designed for high-stress industrial applications. The suffix 'L3' indicates a dry film lubricated nut that meets salt spray requirements AMS-QQ-P-416, Type II, and specifies a #10-32 thread size. MS identifies a Military Standard for aerospace/military hardware. Governed by the MS standard series, administered by Military Standards.