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

PF12MF series captive panel screws are spring-loaded, flare-mounted fasteners with a knurled knob, designed for easy service access and secure retention. The screw body is hardened carbon steel with zinc plating per ASTM B633, the knob and retainer are aluminum, and the spring is 300 series stainless steel. This variant features a DuraBlack™ finish, indicated by the BL suffix, with a metric M3 thread and a screw length of 1.05 mm. It installs into panels with a minimum thickness of 0.79 mm and provides a minimum float of 0.25 mm in all directions. The part is installed using a #1 Phillips driver.