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

The PFS2 series consists of spring-loaded captive panel screws with external threads conforming to ASME B1.1, 2A and ASME B1.13M, 6g, designed for tool or hand operation in sheet materials with hardness up to HRB 80 or HB 150. The screw and retainer are carbon steel with optional bright nickel or black nitride finish per AMS2753, and a nylon retaining ring rated to 200°F (93°C). The M4 x 0.7 thread version has a minimum hole size of 7.92 mm, a maximum sheet thickness of 14.3 mm, and requires a minimum distance from the hole center to the edge of 7.87 mm. The assembly remains captive during mounting and removal.