Casement window crank handle replacement

Question

Hello I have four of these style windows in my home. 3 of the 4 handles have broke. I'm looking for a replacement and don't want to order the wrong part. The nut on the window is 5/16 th thanks in advance.

Bob · Accepted Answer

Hey there. This looks like an older version of the ROTO 39-091 and 39-092 short-arm operators. A crank handle commonly seen with these is the 39-224 Folding Handle, which does fit a 5/16" hex. Please review.