About Tapping Screws
More
Distortion-Free Screws for Plastic-Wood Composites
![](/prerenderstable/mvPRE/contents/gfx/imagecache/984/98419a330_776ead78-49bc-4861-b936-d412dfef51a0@halfx_638113991587459484.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/i20/i200-drivestyletorx--3fd8ef1ff911611090945-p9@halfx_637466661486235050.png?ver=imagenotfound)
Threads change direction to cut into composites and push material back into the hole to prevent distorting the surface around the hole. Also known as trim-head deck screws, these have a small flat head and slender shank to reduce the risk of splitting. They have a Type 17 auger point to penetrate softwood and plastic-wood composite decking material. A Torx drive allows you to apply extra force with less slippage or damage to the recess. Made from 18-8 stainless steel, they have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They may be mildly magnetic. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.