Overview · PEM

Concealed-head self-clinching studs and standoffs install permanently and promote smooth designs:

Install permanently in steel or aluminum sheets as thin as .062" / 1.6 mm to provide strong and reusable threads for mating hardware in a wide range of assembly applications.
Allow the side of the sheet opposite installation to remain smooth and unmarred.
One side installation additionally serves to satisfy strict ingress protection (IP) requirements where the sheet must remain completely sealed from air, liquid, dust, gases or other potentially infiltrating elements.
Only require a blind milled hole to the recommended size and minimum depth.
Install using a PEMSERTER® press or other standard press.
CFHC™ studs can be ordered to NAS63540/4 specifications⁽¹⁾.

(1) To meet national aerospace standards and to obtain testing documentation, Type CFHC studs must be ordered using appropriate NAS63540/4 part number. Check our web site for a complete Military Specification and National Aerospace Standards Reference Guide (Bulletin NASM).

The image illustrates two types of concealed-head fasteners installed in a panel: Concealed-head Stud: A threaded fastener with its base embedded into a blind hole, leaving the opposite side of the panel flush. Concealed-head Standoff: A hollow, internally threaded fastener embedded into a blind hole, shown here with an external screw threaded into it to secure a second panel.

Photo captions: Concealed-head Stud; Concealed-head Standoff; Back side of sheet remains smooth.