Trim-Head decking screws are available in stainless steel for superior corrosion resistance in marine or high-exposure environments where PVC or composite decks are installed. Trim-Head screws provide a clean finish because of their special head design. Also available in bulk 6-lobe drive stainless steel (with painted heads) for hand-drive applications, as well as collated square-drive versions (with and without painted heads) for Quik Drive auto-feed screw driving systems.Mfg of 18-8 (300 series) Stainless Steel, Type 17 Cutting PointTrim-style head is less noticeable on the decking surfaceType-17 point for fast startsCoarse threads on approximately 2/3 of the shank draw the decking and other material tightly to the framingPredrilling recommended near board ends to prevent splitting