PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF11MF-832-1-BL

The PF11MF series consists of large knob, spring-loaded, flare-mounted captive panel screws designed for secure fastening with retained hardware, suitable for applications requiring repeated panel access. These fasteners install into sheets as thin as 0.060 inches (1.52 mm) of cold-rolled steel, with a retainer pullout force of 180 lbs (800 N) for M4 thread size, and a maximum installation force of 350 lbs (1557 N) for swaging. The screw accepts a standard driver and features a flush-mounted back-side profile. The series supports use in painted, stainless steel, and circuit board panels, and is available in multiple colors including black. Tool hand access and anti-corrosion resistance are included features.