In my upcoming build I'm planning to run strings through the body with ferrules. Since it's a 5 string I will have one string on the body centerline, and I also want the strap button on the centerline (so my strap can be same length among other guitars). There will only be room for a max screw length of 3/4". Is that long enough for end-grain in alder? Does being on the glue joint help or hurt the wood strength? I could use a brass threaded insert for the strap button and then I'd only need a 3/8" long screw. Overkill?