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Simpson Strong-Tie #9 x 1-1/2 in. 1/4-Hex Drive, Strong-Drive SD Connector Screw (100-Pack) SD9112R100 - The Home Depot
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SD Strong‑Drive Connector Screw | Strong-Tie | Together we're helping build safer stronger structures
Structure Tech - Double fail; wrong joist hanger used, and wrong fasteners. The joist is supposed to "hang" from that metal bracket, not be suspended by a few fasteners. Also, the fasteners
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