The company’s self-clinching concealed-head studs and standoffs install permanently in steel or aluminum sheets as thin as 1.6 mm to provide reusable threads for mating hardware in a wide range of thin-metal assembly applications. Their concealed heads allow the side of the sheet opposite installation to remain smooth and untouched. This also suits applications where the sheet must remain completely sealed from the elements. The aluminum or stainless steel studs are available in thread sizes #4-40 through #10-32 and M3 through M5 and in lengths from 0.25” through 1” and 6 mm through 25 mm. Stainless-steel standoffs are offered in thread sizes #4-40 through 1/4-20 and M3 through M6 and in lengths from 0.187” through 1” and 4 mm through 25 mm. For more details and prices, contact Michael J. Rossi at PennEngineering, Danboro, PA. (800) 237-4736.