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

The PF11MF series are spring-loaded, flare-mounted captive panel screws with an aluminum knob, aluminum retainer, hardened carbon steel screw, and 300 series stainless steel spring. They install flush on the back side of the panel, accommodate close centerline-to-edge applications, and function with any panel hardness without requiring high installation force. The PF11MF-M4-2 variant features an M4×0.7 thread, with a screw length of 8.89 mm and a maximum sheet thickness of 2.13 mm. The retainer provides a positive stop during installation, and the assembly includes an anti-cross-threading feature. The standard finish is zinc-plated steel screw with natural aluminum components, with an optional DuraBlack™ finish. The part supports a minimum float of 0.25 mm in all directions.