The FastenMaster Collated Cortex hidden fastening system is the fastest, easiest way to hide fastener heads when installing Trex decking. The Cortex hidden fastening system is the fastest, easiest way to hide fasteners in composite, capstock, and PVC decking boards now its 50% faster. Cortex can hide screws on stairs, perimeter boards, and more. Features. Cortex No. 10 x 2.5 in. Madeira Torx Ttap Button Head Hidden Deck Fastener. Made with high quality material. 224 PieceSpecifications. Finish Epoxy Coated. Head Type Button. Length 21/2. Material Steel. Self Drilling No. Self Tapping Yes. Thread Type Coarse. Callout Size No. 10. Drive Style Torx Ttap. Driver Bit Included No. Color Madeira. Indoor or Outdoor Outdoor. Weight 4.75 lbs
