PennEngineering® Large Knob, Spring-loaded - Types PF11M and PF12M - Metric PF11M-M3-5-1

The PF11M series comprises large knob, spring-loaded, self-clinching captive panel screws designed for secure attachment of metal panels with repeated access. The screws install into thin sheets and retain their position even when unscrewed, preventing loss of hardware. These fasteners feature a knurled or smooth metal cap and are available in metric thread sizes including M3. The series includes variants that accommodate different panel thicknesses and alignment requirements. All PF11M fasteners are marked with the PEM® trademark identifier and meet the manufacturer's quality standards.