MTD Hex Lock Nut No. 912-0239. This is an origional hex lock nut 1/2-20 that replaces MTD part number 00023287, 1110152, 158428, 712-0239, GW-1110152, GW-9806, and GW-B1110152.
MTD Hex Nut No. 712-3006. This is an origional MTD 1/4" nut that replaces part numbers 1186229, 7123006, BS-93715, GW-1186229, GW-58-049, GW-7123006, GW-9800, GW-B1186229, GW-M6520020, GW-T70545, IH-120375 and 7123006.