1/4-20 x 2 1/4 Acorn Sleeve Anchor Zinc Plated (100)

Hardness for plain and zinc plated washers is HRC 38-45 and HRC 26-45 for hot-dip galvanized washers per ASTM F436

Typical hardness on diameters 1/4 to 1 inch is HRC 25-34

9/16-18 x 3 Hex Cap Screw SS 18-8 (A2)

1/4 x 2 Nail-in Anchor Mushroom Stainless Steel (100)

5/8-18 x 8 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (70) 7/16-14 Hex Cap Screws 316 Stainless Steel 1/4-20 x 2 1/4 Acorn5 8 18 x 8 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (70) . L9 High Tensile Strength Hex Cap Screws are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods. Brighton Best manufactures L9 bolting from AISI alloy steels. L9