meets or exceeds ASTM F879

3/4-16 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (40)

the expansion mechanism compresses and exerts force against the walls of the hole

GutterScrew™ enables you to replace old popping gutter spikes once and for all

#23 Heavy Duty Jobber Drill Bit

1-14 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 7/16-20 Socket Cap Screws Alloy meets or exceeds ASTM F8791 14 x 5 1 2 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