PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF12MF-832-1

PF12MF-832-1 is a spring-loaded, flare-mounted captive panel screw with a large knob, designed for secure attachment and easy service access without loose hardware. It features a #8-32 external thread (ASME B1.1, 2A), a hardened carbon steel screw, aluminum knob and retainer, and a 300 series stainless steel spring. The screw installs into a minimum sheet thickness of 0.072 inch and has a total installed height of 0.640 inch. It includes a shoulder for positive installation stop and allows a minimum float of 0.010 inch in all directions. The knob has a smooth cap finish with zinc-plated screw and natural finish components; a DuraBlack™ option is available with the BL suffix. The part is identified by a dimpled head and PEM® markings.