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Uxcell Square Washer 20 Pack M4x20x20x1mm 304 Stainless Steel Square Plate Washers

<ul><li>Material: 304 Stainless Steel</li><li>Surface Finish: Pickling Passivation</li><li>Fit Screw/Bolt Thread Diameter: M4(#8)</li><li>Inside Diameter: 4.5mm / 0.18"</li><li>Outside Size: 20 x 20 x 1mm / 0.79" x 0.79" x 0.04"(L*W*T)</li></ul>

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Square plate washers are made of 304 Stainless Steel, rust and corrosion-resistant, with good heat and low temperature strength, suitable for indoor and outdoor use Square washers provide more contact area for fasteners, it is a good choice for applications requiring higher carrying capacity, provide greater stability and prevent loosening. Square washers fit into slots and channels and have flat sides to keep them from rotating, commonly used in mechanical equipment and wood construction, where they create more friction when tightening the wood and are used to fix bolts, screws and other fasteners. Such as use with carriage bolts to secure roof trusses. Widely used in construction, plumbing, electrical, automotive and other industries, etc. When purchasing a square washer, you need to determine the correct size, thickness, and material for your intended application. These factors can greatly affect the performance and durability of the washer.