Handle for Operator (Milgard series 3510 window) with 5/16" spline

Home Owner from Alameda, Calif.

Sep 16, 2020 3:19 pm

I am looking to buy 4 of these handles for my Casement window Operator (Milgard series 3510 window) with 5/16" spline. The spline has a hex shape. Not having much luck looking online. Do you have something that would work? Thanks.

Dan

2 user uploaded images

4 Replies

Casey from SWISCO

Sep 22, 2020 11:48 am

Hi Dan,

We'd be happy to help but we'll need to see a photo of your operator with the window open so that the operator's arms are visible. Once we can identify the operator, we can let you know which handles are compatible. Thank you!

Home Owner from Alameda, Calif.

Sep 22, 2020 3:40 pm

Hi, here is a photo of operator with window open.

1 user uploaded image

Casey from SWISCO

Sep 23, 2020 9:01 am

Thanks for getting back to us Dan. This looks like a ROTO 39-092 or 39-091 Short-Arm Operator. Unfortunately, ROTO has discontinued a lot of the hardware used with these operators, including the crank handles and the bracket arms that connect to the window sash. Even the operators themselves will soon be no longer available. You can sometimes find parts for these operators at a hardware store, but I can't say for sure. Sorry we can't be of more help Dan, and good luck with the repair.