When looking at binding with screw posts, a term that comes up for smaller size capacities is ‘open-ended’ and we get a few questions asking what the difference is between that and the closed end backs of the posts.
The smaller capacity screw posts have a hole in the cap dome of the rear barrel posts.
Q: “We are looking for a screw post with a 3/8” diameter barrel that can lock. Do you have anything available in that size?
A: Unfortunately we only carry binding screw posts with the 3/16” diameter barrel. We don’t actually specialize in or manufacture screw posts. Our main focus is the print finishing/copying
At some point you've probably seen screw posts(aluminum posts for binding) used to hold together items like swatch sample books, menus or scrap books. Their common uses include holding together portfolios, presentations, blueprints/architectural plans, photo print albums, proposals, thesis documents