1/4-14 x 1'' Teks Select™ 3 Self-Drilling Screws, Hex Washer, Hex-Unslotted, Climaseal ACR™, ITW 1119000

Teks Select Composite-Material-to-Metal Self Drilling screws shear failure due to wind and other loads requiring mechanical flex (ductility). This strength and ductility also equip the Teks Self Drilling Screws to maintain mechanical integrity when attaching different metals. This attachment can apply shear pressure on the fastener due to the different rates of expansion and contraction (expansion coefficients) present in each type of metal.