No. 7 x 1 7/8-inch PVH Torx Star Drive Edge Deck Screws, 5000PK

HIDDEN DECK FASTENING WITHOUT JIGS AND CLIPS: IT IS NOW POSSIBLE WITH PVH! All you need is the PVH screw and the T-15 sticky bit. Although the PVH screw is compatible with most jigs on the market, its unique drill tip means you can position the screw right on the corner of the board, without the jig, give it a little push, and the screw will maintain the given angle as you drive it in. The reverse thread gives the required extra push to the board for a solid connection. Simply install the screws face to face at a 45 degree angle on every joist, just as you would with a jig, to produce a deck without any apparent fasteners. It's easy, simple and looks great.