Square Flat Washer, Oversized Thick Washer, Structural Steel Washer - 3*40*40

This oversized thick square flat washer is made of high-quality steel, with dimensions of 3*40*40mm, designed for structural connections requiring high load capacity and stability. Suitable for bolted connections in wood structures, light-gauge steel structures, and heavy steel structures, it effectively distributes pressure, prevents loosening, and enhances overall connection strength. It is an ideal hardware accessory for building reinforcement, outdoor wooden cabins, and treated wood projects.