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

The PF12MF-632-1 is a spring-loaded, flare-mounted captive panel screw with a knurled knob, designed for secure attachment and easy access in applications requiring panel removal. It features a #6-32 external thread per ASME B1.1, constructed with an aluminum knob and retainer, a hardened carbon steel screw, and a 300 series stainless steel spring. The screw installs into panel thicknesses up to 0.060 inch with a minimum countersunk hole diameter of 0.213 inch and a maximum hole diameter of 0.212 inch, accommodating panels of any hardness. It provides a float of 0.010 inch minimum in all directions and is zinc plated per ASTM B633, SC1 (5µm), with a natural finish unless specified otherwise with the BL suffix for DuraBlack™. The part is installed with a #2 driver and maintains a flush profile on the panel's back side.