PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF12MF-632-1-2

The PF12MF series consists of spring-loaded, flare-mounted captive panel screws with a large knob for easy manual actuation. The screw is made of hardened carbon steel with a zinc-plated finish per ASTM B633, SC1 (5µm), type III, colorless, while the knob and retainer are aluminum with a natural finish. The spring is 300 series stainless steel. The part installs into a panel with a minimum thickness of 0.072 in (1.83 mm) and uses a #2 Phillips driver. It features a flare mount with a shoulder that provides a positive stop during installation and allows a minimum float of 0.010 in (0.25 mm) in all directions. The thread is #6-32, meeting ASME B1.1, 2A standard. The design prevents loose hardware and enables repeated service access without detached components.