About

About PennEngineering SI® brand inserts employ press-in, molded-in, or heat/ultrasonic installation methods to provide strong, reusable, permanent threads in plastic. About PennEngineering SI® brand inserts employ press-in, molded-in, or heat/ultrasonic installation methods to provide strong, reusable, permanent threads in plastic. Total Fastening Solutions for eMobility Innovation. Seize opportunities and overcome challenges in eMobility with every fastening solution you need, curated in one place. Get smart fastening solutions for every e-mobility application imaginable; current carry fasteners, chassis and castings, PC Board and plastic assemblies, and wire management. Total Fastening Solutions for eMobility Innovation. Seize opportunities and overcome challenges in eMobility with every fastening solution you need, curated in one place. Get smart fastening solutions for every e-mobility application imaginable; current carry fasteners, chassis and castings, PC Board and plastic assemblies, and wire management.