PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Metric PF11-M3-5-0

The PF11 series consists of large knob, spring-loaded, self-clinching captive panel screws designed for secure attachment of thin metal panels with repeated access. These fasteners install into M3 threads and feature a retainer that provides a positive stop during installation. Performance data indicates an average retainer pullout force of 6.7 kN in aluminum and 11.1 kN in cold-rolled steel, with an installation force of 355 N in aluminum and 645 N in steel. The screw head is compatible with standard driver recesses and is available with a black finish. The series supports applications requiring corrosion resistance and is compatible with stainless steel panels. Detailed drawings and models are available online.