Typical hardness on diameters 1/4 to 1 inch is HRC 25-34

As with all fasteners you’ll find in our selection

then break off as point engages the steel substrate

1/2-13 x 1 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (275)

1 1/4-12 x 8 Socket Cap Screw Alloy

5/8-11 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (80) Phillips Modified Truss Wire Lath Screws 410 Stainless Steel Typical hardness on diameters 1/45 8 11 x 4 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (80) . 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