PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Unified PF11-440-2

The PF11 series consists of large knob, spring-loaded captive panel screws designed for easy service access and to prevent loose hardware risks. These screws install into thin metal panels or similar materials and allow subsequent access without component loss. Variants include self-clinching, flare-mounted, or floating mounting styles. The screws feature a shoulder on the retainer for positive installation stop and are available with knurled or unknurled metal caps, black metal caps, or custom-colored plastic caps. They are compatible with painted or stainless steel panels and resist corrosion in these environments.