#1 square drive trim head

Yellow zinc plated bolting will meet or exceed ASTM F1941

7/16-20 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (500)

1/2-13 x 3 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25)

1 1/2-6 x 3 Socket Set Screw Cup Point Alloy

7/8-9 x 1 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (80) M12-1.75 Socket Cap Screws 12.9 Alloy Plain DIN 912 #1 square drive trim head7 8 9 x 1 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (80) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum of