Called SH self-clincing nuts and HFLH self-clinching studs are manufactured from hardened alloy.

“Due to a lightweight design and reduced need for loose hardware such as washers, these fasteners can contribute to overall weight reductions in vehicle assemblies,” claimed the firm. “Lower installed cost can be gained from the elimination of embossing operations and the capability to install automatically using a standard press or in-die technology. Small outer diameters of the fasteners enable close-to-edge mounting without risking sheet buckling and, upon installation, the reverse side of the host sheet will remain flush and unmarred for a clean appearance.”

• SH nuts can install in sheets up to 975MPa maximum ultimate tensile and with hardness HRC 30 or less on the Rockwell C scale.
  Host panels can be as thin as 1.4 mm.
  Standard thread sizes are M6, M8, and M10 for metric nuts and ¼-20, 5/16-18, and 3/8-16 for unified versions.
• HFLH studs will install into steel sheets at 700MPa maximum ultimate tensile and as hard as HRB 91 on the Brinell scale.
  Host panels can be as thin as 1mm.
  Standard thread sizes are M5, M6, and M8 for metric studs and #10-32, ¼-20, and 5/16-18 for unified versions.

Specifications, drawings, 3D models, and performance data is available on this PEM website.