Protocase, Inc. on Instagram: "Stronger assemblies start with the right fastener. When installing self-clinching fasteners, sheet metal material compatibility isn’t optional — it’s critical. From aluminum to steel to stainless, choosing the wrong fastener can lead to poor retention, galvanic corrosion, or failed installs. In this Proto Tech Tip, Chris breaks down how to select the correct PEM fasteners based on sheet metal material, hardness, thickness, and application — so your parts perform ex