The Screw Substitution Calculator is a quick, easy-to-use tool for providing Simpson Strong-Tie structural screw alternatives to specified standard NDS fasteners in withdrawal, lateral load parallel-to-grain, lateral load perpendicular-to-grain and multi-ply connections. The Calculator provides detailed load calculations for both the NDS fastener and the recommended Simpson Strong-Tie structural screw.
“FD Grip” The No.1 earthquake-resistant rebar coupler in Japan, the highest seismic country,
for over 30 years.
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