Conform to ASTM F879

Pre-drilling is recommended near board-ends to prevent splitting

50 x 110 Socket Cap Screw 12

They are also acceptable for use in ACQ pressure-treated lumber

1-8 x 6 Grade 5 Hex Cap Screw Zinc Plated

1-8 x 16 A307A Hex Bolt Plain Steel 3/8-24 Grade 5 Hex Cap Screws Zinc Plated - Domestic USA Conform to ASTM F8791 8 x 16 A307A Hex Bolt Plain Steel. 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.