5/16 x 12 ITM SDS Plus Hammer Drill Bit

3/4-16 x 3 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (20)

9/16-12 x 8 Socket Cap Screw Alloy

towers and other commercial structures

2 1/4 F436 Flat Washer Plain

1/4-20 x 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) 1/2-20 Socket Cap Screws 18-8 Stainless Steel 5/16 x 12 ITM SDS1 4 20 x 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) . 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