PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF12MF-632-0

The PF12MF-632-0 is a spring-loaded, flare-mounted captive panel screw with a large knob, designed for easy service access and secure fastening in applications requiring frequent reinstallation. It features a hardened carbon steel screw with zinc plating per ASTM B633, an aluminum knob and retainer, and a 300 series stainless steel spring. The part is designed for a #6-32 thread (0.138-32), installs into panels with a minimum thickness of 0.000 inch, and has a maximum installed height of 0.450 inch. The shoulder provides a positive stop during installation, and the retainer allows for a minimum float of 0.010 inch in all directions. The knob is smooth, and the driver recess is sized for a #2 Phillips driver. All dimensions and features align with the PF12MF series as defined for the #6-32 thread variant.