5/16-18 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (250)

1 3/4-5 x 8 Socket Cap Screw Alloy

Countersinks into log

#60 Heavy Duty Jobber Drill Bit

3/4-16 x 2 1/2 Socket Cap Screw Alloy

5/8-11 x 1 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 1/2-13 Hex Tap Bolts Silicon Bronze 5/16-18 x 6 Grade 85 8 11 x 1 Grade 5 Hex Cap Screw Zinc Plated 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