PennEngineering® Large Knob, Spring-loaded - Types PF11M and PF12M - Metric PF11M-M4-2

The PF11M series consists of large knob, spring-loaded, self-clinching captive panel screws designed for secure attachment of metal panels or thin materials with subsequent access required. These fasteners are identified by a dimple marking and are available in metric thread sizes, including M4. The series features a spring-loaded mechanism to maintain tension and prevent loss of hardware during servicing. Installation uses a standard driver recess and provides a positive stop via the shoulder on the retainer. All variants in the series meet PEM® quality standards and are marked with the PEM® identifier for authenticity.