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PennEngineering / PEM

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PennEngineering, headquartered in Danboro, PA and founded in 1942, is a global leader in fastening solutions and the parent of PennEngineering, PennEngineering Automotive Fasteners, and pennTool™ Group. PennEngineering companies provide fastener and fastener installation design and product solutions worldwide for diverse industries, including electronics, computer, data/telecom, medical, automotive, marine, aerospace/aircraft, and general manufacturing.


PEM® brand fasteners utilize self-clinching, broaching, flaring, surface mount, or weld technology to provide strong, reusable, and permanent threads and mounting points in thin sheetmetal or P.C. board materials.

aeroPEM™ fasteners provide global fastener solutions specifically for the aerospace / aircraft industries.

SI® brand inserts employ press-in, molded-in, or heat/ultrasonic installation methods to provide strong, reusable, permanent threads in plastic materials.

ATLAS® brand blind threaded rivets provide strong and reusable permanent threads in sheet materials where only one side is accessible.

The STICKSCREW® system is a unique small screw installation system which eliminates expensive screw handling equipment and loose hardware. The screws are tightened to an exact torque as determined by the stick/screw design.

PEMSERTER® presses are designed to safely, reliably, accurately, and quickly install PEM fasteners. No matter how complex or simple an installation challenge may be, using the PEM fastener and PEMSERTER press system will provide you with quality results.

pennTool™ Group brings quality, cost effective tooling and machine part solutions to fastener and component manufacturers across various industries. As a premier fastener manufacturer, PEM is also expert at the design and manufacture of precision tooling for heading and screw machine operations.

PEM, a brand of PennEngineering, is a global leader in the development, manufacture, and distribution of self-clinching fasteners and fastening solutions. The PEM brand was introduced in 1942, standing for PennEngineering & Manufacturing. This brand focuses on self-clinching fasteners, which are a unique type of fastener used in various industries.

How Self-Clinching Fasteners Work:

  • Clinch Technology: Self-clinching fasteners have a unique design that allows them to be pressed into a panel or housing, where they deform the material to create a secure, permanent hold.

  • Benefits: They provide strong, vibration-resistant joints without the need for welding, threading, or adhesives. This makes them ideal for applications where disassembly and reassembly are necessary.

Industries Served:

  • Electronics: PEM fasteners are used in a wide range of electronic devices and components, providing secure attachment points.

  • Automotive: The automotive industry relies on PEM fasteners for their strength, reliability, and ability to withstand harsh environments.

  • Medical: In medical equipment and devices, PEM fasteners are chosen for their cleanliness, durability, and non-contaminating properties.