Will it fit narco windows too?

Thank you for your recent inquiry regarding this item from Prime-Line Products. This casement crank was designed to fit casements manufactured by Andersen Windows with a spline size of 3/8 inches. If your Narco casement operator has a 3/8 inch spline, there’s a chance this crank may be compatible with your casement window hardware. Unfortunately there may not be one crank that is standard to all Narco casement operators, and there is no sure way to determine the correct replacement item without removing one and matching its dimensions. Window manufacturers can often use more than one design within a given series or product line used over the years, making it sometimes difficult to provide an exact match when relying on manufacturer name and series alone. I would encourage you to visit Prime-Line’s website to find the correct crank replacement your window requires. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net