1 3/8-6 x 16 Socket Cap Screw Alloy

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1/4-20 x 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (3300) 18" Ship Augers 1 3/8-6 x 16 Socket1 4 20 x 1 2 Grade 5 Hex Cap Screw Plain Domestic USA (3300). 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