PennEngineering® Screw Head, Spring-loaded - Metric PFS2-M4-72

PFS2-M4-72 is a spring-loaded captive panel screw with an M4 metric thread, designed for tool or hand operation to attach thin metal panels with easy access and removal. The assembly features a hardened carbon steel screw with a bright nickel over copper flash finish, a 300 series stainless steel retainer and spring, and a nylon retaining ring rated to 200°F (93°C). It installs into sheet materials with a Brinell hardness of 150 or less and requires a minimum hole size of 7.92 mm and a minimum edge distance of 3.2 mm. The screw shank length is 14.3 mm, and the installed height above the panel is 11.43 mm. The retainer includes a blue plastic ring, a PEM trademark.