timber bolts have fins on the neck underneath the head to prevent the bolt from turning during installation

1/4-20 x 3 Grade 8 Hex Cap Screw Plain Domestic USA (100)

1-8 x 9 Simpson Wedge Anchor 303 SS (5)

It functions as an expansion anchor in solid walls and in wooden studs

3/4-10 x 11 A307A Hex Bolt Hot Dipped Galvanized Stainless Steel Rivet / Steel Mandrel timber bolts have fins on3 4 10 x 11 A307A Hex Bolt Hot Dipped Galvanized. A307A Hex Bolts are manufactured from low carbon steel, typically 1015 1022. Our A307A bolting meets or exceeds ASTM A307 Grade A. Material is manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Tensile strength will meet or exceed 60,000 psi.