PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF12MF-M4-2

The PF12MF-M4-2 is a spring-loaded, flare-mounted captive panel screw with a large knob, designed for secure fastening and easy reaccess in thin panels. It features a M4 x 0.7 metric thread, a hardened carbon steel screw, aluminum knob and retainer, and a 300 series stainless steel spring. The screw installs with a minimum shaft protrusion of 2.13 mm and a maximum hole diameter of 6.76 mm in the panel. The knob has a smooth cap finish, with optional black anodized knob and black nitride screw finishes identified by the BL suffix. The part provides a float of at least 0.5 mm to accommodate misalignment and is designed to install flush on the back side of the panel.