Zinc plated material meets or exceeds ASTM F1941

Conform to ASTM F837

Proof load strength is 175

Tensile strength (not pull out) will meet a minimum of 60

1 1/4-7 x 9 Socket Cap Screw Alloy

10 x 2 1/2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - Bulk Pail (2000) 1-8 Grade 8 Hex Cap Screws Yellow Zinc Plated Zinc plated material meets or10 x 2 1 2 Simpson Bugle Head Wood Decking Screws Square Drive T17 316 SS Bulk Pail (2000) . The type 17 tip provides fast starting and resists splitting in hardwood. Coarse threads run approximately 2 3 up the shank to draw the decking tightly to the substrate. Pre drilling is recommended near board ends to prevent splitting. 316 stainless steel is ideal where superior corrosion resistance is required.