Meets ASTM C1002 for attaching gypsum board to wood studs

7/8 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (30)

2 1/2" length for 2 x 4 wood header

railroad ties

The high strength

1/2-13 x 2 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (200) M20-2.50 Socket Cap Screws 12.9 Alloy Plain DIN 912 Meets ASTM C1002 for attaching1 2 13 x 2 3 4 Grade 8 Hex Cap Screw Plain Domestic USA (200). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4