PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF11MF-440-2-2

The PF11MF series comprises spring-loaded, flare-mounted captive panel screws with a large knob, designed for easy service access and secure fastening in thin metal panels where loose hardware must be avoided. The screw installs flush on the back side of the panel and is suitable for applications requiring misalignment tolerance. It is compatible with painted and stainless steel panels and has UL recognition for anti-corrosion resistance. The design allows hand actuation and tool-free installation, with a spring-loaded mechanism to prevent loss during disassembly.