1/2-20 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (200)

ThruLOK® comes in specific lengths that allow contractors to replace their 1/2" carriage and through-bolts in three primary deck applications:

1-8 x 3 1/2 Hex Cap Screw SS 18-8 (A2)

7/16-20 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

1/2 x 3 1/2 Mushroom Spike Zinc Plated (50)

1/2-13 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (250) 5/16-18 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 1/2-20 x 4 1/2 L91 2 13 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (250). 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 120,000