Simpson Strong-Tie's History of Innovation

1984 HDA Holdown

First automated, galvanized, non-welded holdown. Cuts industry costs by 40% and significantly reduces field misinstallations.

1984 THA Hanger

Offers extra long, fieldformed straps to provide top flange hanger convenience and full code nailing.

1994 Anchor Systems
Simpson Strong-Tie enters the anchoring business to offer customers a wide range of products for concrete and masonry.

1997 PHD Holdown

Pre-deflected seat design achieves exceptionally high loads, while providing fast and accurate installation. First product to incorporate patented SDS wood screws.

1999 Strong-Wall^® Shearwall

Simpson Strong-Tie introduces its first factory-built wood shearwall. Marks Simpson’s move into a system approach to product design that looks at concrete anchorage, wall performance and top plate attachment.

2005 Steel Strong-Wall^® Shearwall

A unique composite of steel and wood, this shearwall increases capacity between two and three times the original Strong-Wall panel while substantially reducing installation time.

1960 A35 Anchor

First connector for the hardware/ lumberyard business, fulfills multiple field applications.

1963 HD5 Holdown

First connector that specifically addresses seismic issues.

1970 LUP Hanger

Revolutionary design eliminates the need for joist nailing, resulting in faster field installation.

1985 LSSU Hanger

First rafter connector that allows for variable roof slopes and skews.

1985 LUS Hanger

Introduction of double shear slant nailing, which reduces the installed cost of hangers by 25%, while increasing load capacity.

1996 SET Epoxy-Tie

Offers the highest strength epoxy product on the market with extensive testing on concrete conditions commonly seen in the residential market.

2003 Tyrell Gilb
Research Laboratory

Simpson opens world-class testing facility to continue research into safer building construction.

2005 Quik Drive^® Auto-Feed
Screw Driving System

These tools provide a fast, easy and reliable way to secure a variety of construction materials..