5/16-18 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

The T25 6-Lobe drive offers robust torque transfer for effortless driving

offering up to 3

Constructed from alloy steel

3/8 F436 Structural Flat Washer Plain Domestic USA - Package (100) 7/16-20 Flat Socket Cap Screws Alloy 5/16-18 x 3 1/2 L93 8 F436 Structural Flat Washer Plain Domestic USA Package (100) for all your high strength structural bolting needs. These hardened washers meet ASTM F436 specifications, ensuring precise load distribution and preventing embedment under the heads of A325 and A490 bolts. Ideal for interior or sealed structural connections where an uncoated surface is required. Trust Domestic USA quality for reliable, traceable, and superior structural assemblies.