PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF12MF-M3-1

PF12MF-M3-1 is a spring-loaded, flare-mounted captive panel screw with an M3 x 0.5 metric thread, designed for secure fastening and easy service access without loose hardware. It features a knurled knob, aluminum knob and retainer, hardened carbon steel screw, and 300 series stainless steel spring. The screw installs into panels as thin as 1.05 mm with a required hole size of 4.75 mm, and provides a minimum 0.25 mm float in all directions. The finish is zinc-plated screw with natural finish on knob, retainer, and spring, or optional black anodize and black nitride when specified with the BL suffix. It is installed using a #1 Phillips driver and retains positive alignment during assembly.