New Simpson Strong-Tie THDSS designed for corrosion
Fastener is designed for corrosive environments and code listed for cracked concrete.
Simpson Strong-Tie has introduced the first 1/4"-diameter stainless-steel screw anchor designed for lighter-duty applications in severely corrosive environments. The screw is also code listed for use in cracked concrete.
Part of the broad line of code-listed stainless-steel Titen HD heavy-duty screw anchors (THDSS) from Simpson Strong-Tie, the new 1/4" THDSS screw anchor combines the corrosion resistance of Type 316 stainless steel with the undercutting ability of harder, heat-treated carbon steel. The THDSS helical-coil threads feature a serrated carbon-steel leading thread that cuts a channel so the stainless-steel threading can securely interlock with concrete and masonry.
Traditional carbon-tipped stainless-steel anchors are vulnerable to rust and expansion that can crack the concrete, but the helical-coil carbon thread of the THDSS greatly reduces the anchor’s overall carbon-steel quantity, making it much less likely to cause concrete damage if corrosion occurs. For comparison, a 1/2" x 5" THDSS screw anchor contains less than 1% carbon steel, while other stainless-steel screw anchors of the same size can contain as much as 18% carbon steel.
The addition of the 1/4"-diameter anchor to the THDSS lineup (which also includes diameters of 3/8", 1/2", 5/8" and 3/4") rounds out the company’s offering of stainless-steel anchors suitable for bridge, marine, water-treatment plant, and heavier civil-construction and retrofit applications where corrosive elements pose a hazard to standard carbon-steel screw anchors. In addition to their strength and environmental adaptability, all Titen HD screw anchors install easily with an impact wrench or hand tool.
Part of the broad line of code-listed stainless-steel Titen HD heavy-duty screw anchors (THDSS) from Simpson Strong-Tie, the new 1/4" THDSS screw anchor combines the corrosion resistance of Type 316 stainless steel with the undercutting ability of harder, heat-treated carbon steel. The THDSS helical-coil threads feature a serrated carbon-steel leading thread that cuts a channel so the stainless-steel threading can securely interlock with concrete and masonry.
Traditional carbon-tipped stainless-steel anchors are vulnerable to rust and expansion that can crack the concrete, but the helical-coil carbon thread of the THDSS greatly reduces the anchor’s overall carbon-steel quantity, making it much less likely to cause concrete damage if corrosion occurs. For comparison, a 1/2" x 5" THDSS screw anchor contains less than 1% carbon steel, while other stainless-steel screw anchors of the same size can contain as much as 18% carbon steel.
The addition of the 1/4"-diameter anchor to the THDSS lineup (which also includes diameters of 3/8", 1/2", 5/8" and 3/4") rounds out the company’s offering of stainless-steel anchors suitable for bridge, marine, water-treatment plant, and heavier civil-construction and retrofit applications where corrosive elements pose a hazard to standard carbon-steel screw anchors. In addition to their strength and environmental adaptability, all Titen HD screw anchors install easily with an impact wrench or hand tool.
