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Publication Date: 04/1/2012
Archive >  April 2012 Issue >  New Products > 

PEM: Concealed-Head Studs & Standoffs
Concealed-head studs & standoffs.
Danboro, PA — PEM® self-clinching concealed-head studs and standoffs provide strong, permanent, and reusable threads for mating hardware in thin-metal assembly applications. Their concealed-head feature offers design and esthetic benefits by allowing the side of the sheet opposite installation to remain smooth and untouched. This also serves as an excellent solution for applications where the host metal sheet must remain completely sealed from air, liquid, dust, gases, or other potential contaminants.

Concealed-head studs and standoffs install permanently in steel or aluminum sheets as thin as 0.062-in. (1.6mm). Studs in aluminum or stainless steel are available in thread sizes #4-40 through #10-32 and M3 through M5 and in lengths from 0.250 through 1-in. (6 through 25mm). Standoffs (stainless steel) are offered in thread sizes #4-40 through 1/4-20 and M3 through M6 and in lengths from 0.187 through 1-in. (4 through 25mm).

Sheet preparation for installation requires only a blind milled hole to the recommended minimum depth. Using a PEMSERTER® or other standard press, installation is quickly and easily accomplished by placing the fastener in the hole and applying sufficient squeezing force. The fastener head then locks securely in the sheet and can handle substantial loads.

These fasteners are RoHS-compliant and some stud types meet NASM63540 specifications. Detailed specifications (Bulletin CH) and free part drawings (PEM CAD Library) can be accessed at the company's website.

Contact: PennEngineering®, 5190 Old Easton Road, Danboro, PA 18916-1000 800-237-4736 or 215-766-8853 fax: 215-766-0143 Web:

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