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12 mm THK and a Janka hardness of 1200
allowing you to quickly complete your jobs
Heat-treated and tempered for extreme durability and long life
high tempered steel tape core
GRK Fasteners RSS 12221 Structural Screw, 5/16 in Thread, 3-1/8 in L, Washer Head, Star Drive, Steel, 100 PK Automotive Tools & Accessorie 12 mm THK and aGRK's RSS 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 that are 3 1 8 in and longer have CEE threads which enlarge the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily and increases the screw's drawing
US$ 18.00
US$ 8139.02
US$ 20.80
US$ 242.88
US$ 2012.93