PennEngineering® Large knob, spring-loaded Types PF11 and PF12 - Unified PF11-440-1

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 required. The screws feature a spring-loaded mechanism to maintain tension and prevent loss of hardware. The series includes variants with knurled or unknurled metal caps and is available in black or custom color options. These fasteners are intended for use in applications where loose components must be avoided to protect internal parts.