GRK 12225 Handy-Pak Rugged Structural Screw, 5/16" x 4" BackToCampus * Based on external laboratory

* Based on external laboratory testing

Usage: Woodworking

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Leak proof precharged air chamber

Safe to use on your finest metals

GRK 12225 Handy-Pak Rugged Structural Screw, 5/16" x 4" BackToCampus * Based on external laboratoryGRK Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSS screw which is 3 1 8" and longer have CEE thread that enlarges the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily and increasing the screws