GRK 10221 UberGrade Rugged Structural Screw, 5/16" x 3-1/8", 500-Count BF20 meets CSA requirements

meets CSA requirements

Great durable paddle

Multi Shield is the ultimate product used to protect hard floors and other surfaces from damage on the jobsite

Featuring a tear and puncture-resistant design

Casing Material : Steel

GRK 10221 UberGrade Rugged Structural Screw, 5/16" x 3-1/8", 500-Count BF20 meets CSA requirementsGRK's RSS 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 screws which are 3 1 8" and longer have a six threaded CEE thread that enlarges the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily and