PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Unified PF11-0420-2-BL

The PF11 series comprises large knob, spring-loaded captive panel screws designed for secure mounting and easy service access without loose hardware, installing into thin metal panels with a spring-loaded mechanism for retained engagement. Available in self-clinching, flare-mounted, or floating mounting styles, they feature a shoulder on the retainer providing a positive stop during installation. Options include knurled or unknurled metal caps, black metal caps, or custom-colored plastic caps. Compatible with stainless steel and painted panels, they allow tool-free or hand operation and support multiple panel thicknesses and threading configurations.