#7 x 2-1/4" Simpson Strong-Tie #1 Square Drive Trim Head Wood Screw - 316 Stainless Steel, Pkg 3000 Wing Fittings 6-lobe (T-style) drive reduces cam-out

6-lobe (T-style) drive reduces cam-out and supports efficient

Mitered tips dig into the wood

If you have a nominal post measuring 5-1/2x5-1/2" you will need an ABW66Z Post base

Self-drilling tip eliminates predrilling into steel substrates

The Hi Low threads allow the screw to be used in either wood or thin gauge metal

#7 x 2-1/4" Simpson Strong-Tie #1 Square Drive Trim Head Wood Screw - 316 Stainless Steel, Pkg 3000 Wing Fittings 6-lobe (T-style) drive reduces cam-outSimpson Trim Head Wood Decking Screw Square Drive available in Type 316 or Type 305 Stainless Steel with heads to match Azek PVC decking along with a variety of decking colors from other manufacturers.