Here is the manufactures information for the Torx screws. They manufacture a full line of screws and there is engineering data on their web site. The different products are not referred to as torx screws on the web site, they are referred to by their specific product name. I have used a variety of the products and have been happy with all of them. The man at my local lumber yard says they go out the door like crazy.
www.grkfasteners.com Jim King [Non-text portions of this message have been removed]
