PennEngineering® Large Knob, Spring-loaded - Types PF11M and PF12M - Unified PF11M-632-0-BL-2

The PF11M series consists of large knob, spring-loaded, self-clinching captive panel screws designed for secure mounting in thin metal panels with repeated access required. These fasteners feature a knurled or smooth metal cap and are available in black or custom colors. The shoulder on the retainer provides a positive stop during installation, ensuring consistent embedment depth and preventing over-tightening. The series is compatible with mating threads and supports installations in stainless steel and printed circuit boards. Integral spring action allows for panel thickness variation and maintains bolt preload post-installation.