Various replacement parts

Thanks for reaching out to us. Looks like you need quite a few different parts so I'll go through them one at a time.

To start with the handle knobs, these aren't sold separately. You would need an all new handle; in your case I would recommend the 39-114L.

The flat rods you mentioned are called tie bars. I can't quite make out what yours is but we sell two that are close to your size: the 38-920 and 38-972. Look these over and see which one would be a better fit for your window.

The locking bar clip I believe is the white guide you show in your photos, yes? If so, that would be the 39-448 tie bar guide.

The handle sounds like the operator handle, which I recommended previously.

Finally, I am snot sure what the knob locking pin is in this case. Can you show me what that is, specifically?