Get a discount on the Ridgid 12353 5/16-18 Hex Nut Flange and get a great solution for your shop. This Hex Flange Nut is a replacement part for use with Model WD620/935/WD1245/1635/WD1735 Wet/Dry Vacuum. It is made of high-quality, durable materials for longevity and functionality. Ridgid makes solutions that you can trust. Contact us with any questions about your project or this product.