Ordnance provision system. Ordnance catalog (ordnance provision system): Groups A-T. F-245. Setter, fuze, M14 (wrench), setter, fuze. M15 (for 75-mm howitzer), setter. fuze. M16 (for 75-mm gun), setter, fuze, M17 (for 105-mm howitzer), list of all parts; June 14, 1943.