PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Metric PF11-M3-2

The PF11 series consists of large knob, spring-loaded captive panel screws designed for secure mounting in thin metal panels with easy service access. These fasteners install into standard M3, M4, M5, or M6 threaded holes and provide a retainer pullout force of 360 N in cold-rolled steel and 645 N in aluminum. The design prevents loose hardware by anchoring the screw to the panel, with a self-clinching mounting style and a recessed driver socket. Physical dimensions and load ratings are specified for the base model, with no variations noted for terminal codes.