PennEngineering® Screw Head, Spring-loaded - Metric PFS2-M4-50

PFS2-M4-50 is a spring-loaded captive panel screw with an M4 thread, designed for tool or hand operation to attach thin metal panels with easy access. It features a hardened carbon steel screw, 300 series stainless steel retainer and spring, and a nylon retaining ring with a temperature limit of 200°F (93°C). The screw has a bright nickel over copper flash finish per ASTM B689, Type II, and is rated for use in sheet hardness up to HRB 80 or HB 150. Installed height above sheet is 13.72 mm, with a minimum hole size of 1.53 mm and a minimum distance to edge of 6.35 mm. The assembly remains captive during installation and removal.