1-8 x 9 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (20)

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8 x 2 Simpson Bugle-Head Self-Drilling Screw - Square Drive 410 SS - Box (100)

8 x 2 1/2 Phillips Bugle Decking Screws Yellow Zinc Plated - Carton (2500)

5/16-18 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) 5/8-18 Grade 5 Hex Cap Screws Plain - Domestic USA 1-8 x 9 L9 Hex5 16 18 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) . 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