CFA and CFC concealed-head clinch studs are designed for permanent mounting in thin metal sheets where a clean, unmarred exterior surface is required. Installed into a blind milled hole using a hollow punch and solid anvil, the stud head is permanently pressed into the material without visible surface distortion. The serrated collar secures the fastener flush with the sheet surface for a concealed appearance. CFA studs are manufactured from 2024-T4 aluminum, while CFC variants use passivated 300 Series stainless steel. Suitable for high-visibility panels, enclosures, and precision sheet metal assemblies requiring strong concealed fastening.