Bilt Best replacement parts

A handy person from Indianapolis says:
I need new hardware but don't know how to identify the replacement part. I'll describe it the best I can:
1. It's the crank mechanism on the left window of 2 crank (vertical) windows. The left when looking out from the inside.
2. The crank swings the window out and to the left.
3. Crank is located on the bottom sill.
4. the number "40471" appears on the bottom plate.
5. the number "30472 R.H." appears on the main arm.
6. the number "30842R" appears on the shorter arm.

I hope you can help me. I need to buy a new mechanism asap. Thanks.
User submitted photo of their Bilt Best crank operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Take a look at the 39-031 and 39-032 style operator. I normally just replace the operator unless anything else is broken.

If you need a new handle see 39-205 or the 39-114L.

If you need a new operator cover see 39-107.
A handy person from Pittsburgh says:
I have read the posts but am a bit confused.

The insert piece seems to be my issue. The one end connects to the handle and the other end is the one that threads into the gears. The latter is the part that is worn.

What replacement parts do I need?

Thank you very much!

Profile picture of Mike
Mike from SWISCO responded:
Can you submit a photo of your original hardware so we can take a look?
A handy person from Illinois says:
Just quick clarification the 39-series is a direct comparable product to the 30842 R's and L's
Thumbnail of the uploaded file named 20210615_075820.jpg
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 4-7 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 856-317-6263 or at