Simpson 3/4" x 7" 316 Stainless Steel Titen HD Screw Anchor PACK:10 Pk What drive type do these

What drive type do these screws use

Featuring a high-low thread design and a distinctive multilayer corrosion-resistant coating

3" x 20 TPI (fine curve cuts)

Capacity: 16 oz

Masonry installations

Simpson 3/4" x 7" 316 Stainless Steel Titen HD Screw Anchor PACK:10 Pk What drive type do theseThe Simpson THD75700H6SS Titen HD 3 4 in. x 7 in. Type 316 Stainless Steel Heavy Duty Screw Anchor by Simpson Strong Tie is a state of the art screw anchor engineered for concrete and masonry applications in corrosive and extreme environments. Combining the superior corrosion resistance of Type 316 stainless steel with innovative heat treated carbon steel cutting threads, this heavy duty anchor delivers fast, efficient installation and long lasting