Star Drive Hex Washer Head Masonry Screws, 100 Pieces with Drill Bit - 5/16" x 3-1/4" Concrete Masonry Screws, Rust Resistant High Strength

We stock a wide variety of fasteners ideal for many applications around the home, farm, business, automotives, and in industry. Most of our fasteners have a light zinc plating over steel giving a more rust resistant finish. We also sell coated and stainless products for additional rust resistance. We stock many grades of fasteners ranging from low carbon steel on up to hardened, heat treated steel. Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed builder or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person.

• COMBO HEX & STAR DRIVE: The hex and star drive design provides maximum installation torque and ease of use.
• HIGH STRENGTH: Made with case hardened alloy steel for maximum durability and strength.
• SERRATED THREADS: Serrated threads cut into the walls of the pre-drilled hole for easy installation and a strong hold every time.
• BLUE RUSPERT COATING: Suitable for exterior and treated lumber applications, the blue ruspert coating provides superior rust resistance.
• DRIVER & DRILL BIT INCLUDED: The proper driver bit and carbide-tipped masonry drill bit are included in each box of TorqueMaster screws.