40545 USS 1/2'" Flat Washers - Galvanized Box/50

Overview

The 40545 USS 1/2" Flat Washers – Galvanized (09143) is designed for load distribution applications with threaded fasteners in general construction and fastening assemblies.

Technical Features

• USS flat washer profile: Features a large, wider body compared to SAE flat washers, providing a greater bearing surface area for improved load distribution across the fastened material.
• Galvanized finish: Zinc-coated surface provides corrosion resistance, making these washers suitable for outdoor and moisture-exposed applications.
• Flat, thin-plate construction with center hole: Designed to distribute the clamping load of a threaded fastener evenly, reducing the risk of surface damage or pull-through on softer materials.
• 1/2" nominal size: Compatible with 1/2" threaded fasteners including bolts, screws, and nuts in standard assemblies.
• Box quantity of 50 pieces: Supplied in a counted box of 50, supporting consistent inventory management on the job site.

Applications

• General construction and structural fastening assemblies requiring load distribution beneath bolt heads or nuts.
• Outdoor installations where galvanized corrosion resistance is required.
• Wood-frame and metal fastening applications where a wide bearing surface helps prevent fastener pull-through.
• Use with 1/2" bolts, carriage bolts, or hex bolts in USS-specification assemblies.