STRUCTURAL APPLICATION: Fastens 6 Snap-Loc E-Track Singles to 1/8 inch 10 gauge or thicker steel. Fast and easy one step self-drilling installation. Industrial strength heavy duty screws. ZINC PLATED SPECIFICATIONS: Screws 5/16 x 1-1/4 inch with self-drilling tips. 1/2 inch hexagon socket head. One piece washer head design protects parts from scratching during installation. INCLUDES: 12 industrial strength heavy duty screws. See other Snap-Loc items for more fastener options, straps and accessories. SNAP-LOC E-TRACK SYSTEM: The easiest, fastest and safest way to tie-down cargo items on pickups, trucks, trailers, racks, walls, floors, ceilings and more! Very easy install, long lasting solution. Snap-Loc Zinc Plated Self-Drilling Screw Set fastens two Snap-Loc E-Track Singles to structural metal framing with easy one step self-drilling installation! The Snap-Loc E-Track System is the easiest, fastest and safest way to tie-down cargo items on pickups, trucks, trailers, racks, walls, floors, ceilings and more! THE PROBLEM: Cheap hook straps come loose, break often causing valuable items to dangerously fall, tangle into a frustrating ball of spaghetti and waste your time and money. THE SOLUTION: The Snap-Loc E-Track Single System securely anchors all sized cargo items where you need it, uses long lasting 2 inch wide professional movers straps and stows away neatly in small spaces. You're going to love it! Our E-Track System also coordinates with the Snap-Loc Dolly System to easily move more in less time with high capacity smooth rolling casters, E-Track Strap attachment and Push Cart Panel Cart conversion.