Help finding replacement Casement Window Operators (Left and Right) / Handles / Inset screw for handle

Thanks for posting. For the operator you're looking to replace, start by comparing to our 39-045, with the 9"straight arm. See the diagram below for reference. Compare to your old hardware and let me know if this matches what you have; or if it differs, in what way.

Dimensions for 39-045

For the crank handle, we may be able to help, but I need more information. Can you show me the entirety of the mechanism it attaches to, including the link arm(s) that jut out the back of the operator? A bird's eye view would be best. Knowing the diameter of the hole at the end of the handle that fits around the operator spline would also help narrow this down. We'll do our best to assist from there. 

Thank you! With that size in mind, my top recommendation would be the 39-274. This also has a 5/16" spline and is commonly used on older style operators.