PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF12MF-M3-1-BL-2

PF12MF captive panel screws are spring-loaded, flare-mounted fasteners with a large knob, designed for secure attachment and easy service access without loose hardware. The assembly includes an aluminum knob and retainer, a hardened carbon steel screw with zinc plating per ASTM B633, and a 300 series stainless steel spring. This variant features a DuraBlack™ finish on both the knob and screw, designated by the 'BL' suffix. It is threaded for M3 x 0.5 and installed in a minimum 1.05 mm sheet thickness, with a maximum installed height of 11.43 mm. The screw provides a minimum 0.25 mm float in all directions, and installation requires a #1 Phillips driver. The design ensures positive stop during installation via a shoulder and accommodates panel thicknesses up to 2.92 mm.