Hardware Insertion (PEM)

Hardware Insertion (PEM)

Hardware insertion integrates PEM® self-clinching fasteners — threaded studs, standoffs, and nuts — directly into sheet metal to create load-bearing threads without tapping or welding. A precision press drives the knurled collar into a laser-cut hole, causing cold flow of surrounding metal for permanent retention and flush surfaces on both sides. For a reliable bond, each insert is matched to the sheet thickness range (grip range), edge clearances, material hardness, then oriented perfectly perpendicular to the part. The application automatically filters compatible PEM sizes according to alloy, thickness and required spacing, ensuring clean installation and assemblies that fit right the first time.

General requirements managed by app: automatic hole resizing, edge clearance verification, minimum spacing between identical and different hardware, and distance to bend zones.

What is it for?

PEM inserts add a strong, permanent thread to a sheet-metal part without having to weld or screw on a separate piece. In practice, they let you assemble, disassemble and reassemble your parts with standard fasteners — self-clinching nuts, threaded studs and standoffs — while keeping flush surfaces on both sides.

Inserts are installed before bending, while the sheet is still flat: the press has clear access and the insert ends up perfectly perpendicular to the surface. That's why you need to plan enough distance between the insert and the bend zones right from the design stage.

This service is offered on aluminum, mild steel, galvanized steel and stainless steel (304 and 316).

The alternative to tapping

On thin sheet, there simply isn't enough material to form a reliable thread: tapping can strip out under tightening torque. A PEM insert spreads the load over its full footprint and provides a load-bearing thread where tapping wouldn't hold.

It's also the solution we use for 304 and 316 stainless steel: we don't offer tapping on stainless — its hardness and tendency to gall make the operation unreliable. Stainless PEM inserts give strong, clean threads on those parts.

Typical use cases

Electronics enclosures and cabinets, access panels, removable chassis and brackets, assemblies with repeated fastening — anywhere you want a strong, reusable attachment point on sheet metal. Browse the PEM hardware catalog to choose your references.