PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Metric PF12-M4-2-BL

PF12 captive panel screws are spring-loaded, self-clinching fasteners with a large knob, designed for secure attachment and repeated access to metal panels. They are available in metric thread sizes including M4, with installation and retainer pullout forces of 13.3 lbf and 20 lbf respectively in cold-rolled steel, as tested. The screw head enables hand tool operation and the design accommodates thinner sheets and circuit boards without loose components. The part is identifiable by its stamped PEM® markings and conforms to the broader PF12 series specifications for installation performance and retention.