GRK Fasteners RSS 5/16″ x 3 1/8″

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Speedy lag bolt alternative with immense drawing power. Ideal for use anywhere you would use a traditional lag screw and more, but with no pre-drilling required. For use in all applications including pressure treated lumber. They are self-tapping eliminating the need to pre-drill, features a washer head with cutting teeth, W-Cut for reducing torque, CEE Thread for no splitting, and is coated with Climatek for superior corrosion resistance.

Recessed Star Drive means zero stripping, with 6 points of contact
CEE Thread Design enlarges hole to reduce splitting
W-Cut Thread Design for low torque and smoother drive
Zip-Tip Design means no pre-drilling and faster penetration
Case Hardened Steel for high tensile, torque, and sheer strength
Cutting Pockets provide a clean hole, reduces splitting, and bores with precision