SSD

Simpson Manufacturing Co., Inc.

A maker of structural connectors and fasteners for wood and concrete construction, Simpson Manufacturing sells thousands of products—joist hangers, anchors, and lateral-force systems—under the Simpson Strong-Tie brand to builders, dealers, and home centers. The company traces back to 1956, when Barclay Simpson used the punch press at his family's window-screen factory to craft a metal joist hanger for a neighbor's roof, an order so successful he sold the screen business to focus on connectors. The "Strong-Tie" name comes from those metal ties that hold wood framing together.