Screws up to 1" in length are fully threaded

thicker diameter and additional thread

1/4 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (11100)

1/2-20 x 2 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (225)

3/4-10 x 4 Socket Cap Screw 316 Stainless Steel

9/16-18 x 2 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (25) 1/4-20 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA Screws up to 1" in9 16 18 x 2 1 2 Grade 5 Hex Cap Screw Plain Domestic USA (25). 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