PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF12MF-0420-2-2

PF12MF-0420-2-2 is a spring-loaded, flare-mounted captive panel screw with a #10-32 thread (0.190-32), designed for use with panels up to 0.410 inch thick. The screw features a knurled knob, a hardened carbon steel screw body with zinc plating per ASTM B633, and a 300 series stainless steel spring. It provides a minimum float of 0.010 inch in all directions and installs into a countersunk hole with a maximum diameter of 0.323 inch. The part includes a shoulder to ensure positive stop during installation. Dimensions and performance are consistent with the PF11MF/PF12MF series, which are rated for installation into painted, stainless steel, and circuit board materials. The part is not flush on the back side of the panel.