PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Metric PF11-M4-1

The PF11 series consists of large knob, spring-loaded captive panel screws designed for easy service access and to prevent loose hardware. These screws are available in self-clinching, flare-mounted, or floating mounting styles and are intended for use with thin metal panels or similar materials requiring repeated access. The series includes variations with knurled or un-knurled metal caps, black caps, or plastic caps. All variants feature a spring-loaded mechanism and are marked with PEM® identifiers to ensure authenticity.