Id take your bow and your site to the hardware store and see if they can come close enough to mathcing the length, size shouldnt be a problem findingbut its more or less going to be the length that you might have a problem finding. Most all use standard threading. Even if the screws are stainless you can always paint them. If you find screws that fit but are a tad long, you can put a spacer between the site and the riser, i had to do this with my HHA site when I put it on my nova.