Commercial grade replacement meat grinder knives for Hobart 4046, 4146, 4246. Our size #32 knife will fit your Hobart size #46 meat grinder. Size #32/#46 replacement knives Premium. 9/16 (15mm) center square hole. Will fit your grinder if your plates are 3 15/16 across. This knife typically fits all #32 and #46 meat grinders. Other size plates and knife available. North America’s largest selection of stainless steel. Meat grinder parts and accessories.