Folding or T operator handle for 1978 Anderson Primed Wood Casement

A handy person from Lake Wylie, SC says:
Need folding or T operator handle for 1978 Anderson Primed Wood Casement. I have taken a photo. The spline has 12 teeth and it measures about 11/32 to 5/16 in diameter (outer spline dia). The windows are wood on the outside not the 400 series with vinyl.
operator
Profile picture of Tom
Tom from SWISCO responded:
Can you confirm the spline diameter? Since this is an Andersen operator, it should be 3/8". If it is, see our 39-298.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.