537-024 K7B & K8B abrasive chop saw spindle nut will fit either of these models. Arbor sizes are the same on both the 7 and 8 inch abrasive chop saws regardless the age of the unit.
292-002 K7B & K8B abrasive chop saw loose flange is used on both abrasive chop saw that are 7 inch and 8 inch models. The material used to manufacture this loose flange is die cast.