PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF11MF-M5-2

The PF11MF series consists of spring-loaded, flare-mounted captive panel screws with a large knob, designed for close centerline-to-edge applications and installation into panels of any hardness. The part PF11MF-M5-2 is a metric variant compatible with M5 threads, featuring an aluminum knob and retainer with a hardened carbon steel screw and 300 series stainless steel spring. It installs flush on the back side of the panel with a minimum float of 0.25mm in all directions, and the screw length is 8.89mm. The retainer pullout strength is 1.5 kN (800 N) in aluminum and 1.5 kN (800 N) in cold-rolled steel. The screw is zinc plated per ASTM B633, SC1 (5µm), Type III, and the standard driver recess is #2.