David Bolton NRP Hinges on Outswing Doors: When the Pin Is the Vulnerability Why the Hinge Pin Becomes a Target on Outswing Doors This guide explains non-removable pin (NRP) hinges: what they are, why outswing doors require them, and how to specify or replace them correctly. I... NRP hardware commercial door hardware door security hinges outswing doors Apr 23, 2026 Our Blog
