PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF12MF-M4-2-2

The PF12MF series consists of spring-loaded, flare-mounted captive panel screws with a large knob, designed for secure fastening and easy access without loose components. The screw is made of hardened carbon steel, the knob and retainer of aluminum, and the spring of 300 series stainless steel. It features a zinc-plated finish per ASTM B633, SC1 (5µm), Type III, and is available in metric thread sizes including M4 x 0.7. The part installs into panels with a minimum sheet thickness of 0.084 inch (2.13 mm) and provides a float of 0.25 mm minimum in all directions. The driver size is #2, and the head has a smooth cap with a shoulder for positive installation stop.