PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Metric PF12-M3-5-1-BL

The PF12 series comprises large knob, spring-loaded captive panel screws designed for secure attachment of thin metal panels with repeated service access required. These fasteners install into standard through-holes and retain the screw body within the panel to prevent loss of hardware. The series includes self-clinching configurations and features a spring-loaded mechanism for flush or controlled protrusion. All variants in the PF12 series are compatible with M3 threads and meet PEM®'s quality standards, with identifiable product markings including the double squares trademark.