Has anyone ever seen cap screws on a gear list for an aid route? A little background: a local climber has made awesome fold out topo map guides for some crags in AZ. In a couple of the route descriptions, he lists cap screws as needed for the route. These are old, obscure 1-2 pitch aid routes at older crags. I had never heard of cap screws, and after a general (non-climbing) search it looks like basically a term for a threaded bolt. I'm guessing the routes may have some type of female drop-in anchors, but are missing the bolts, so you need to bring your own. I've never seen this anywhere else, so I was just wondering if anyone else has heard of this set up, or if it's common elsewhere. Thanks for any info anyone can share; I've been curious about this for a while.