CARBON STEELThese long shank hex nuts are made of carbon steel with a galvanized surface, which can provide high strength and good corrosion resistance. M6 SLEEVEThe nuts are standard M6 thread, which provides good granularity for a tool. And the 6 sides will be easy to hold by tools. 40MM SPACER * 5PCSThe hex nuts are M6 * 40mm type, total 5 pieces, they are perfect replacement for industrial and construction fasteners. FASTEN TIGHTLYHex nuts are used to join bolts, studs, or machine screws to fasten two parts together to make one. WIDE APPLICATIONSThese long shank hex nuts can be widely used for home and office, communication equipment, ship assembly, and other machinery industries. Features: 1. These hex nuts are made of zinc-plated carbon steel material, which provides strength, and a zinc cover offers good corrosion resistance. 2. The hexagonal shape has 6 sides, which provides good granularity of angles for a tool to work from. 3. These hex nuts will be an excellent replacement for industrial and construction fasteners. 4. Widely used in home and office appliances, communication equipment, ship assembly, and other machinery industries. 5. Used to mount bolts, studs, or machine screws to fasten two parts together to make a single piece. Specification: Condition: 100% Brand New Product Material: Carbon Steel Surface Treatment: Galvanized Quantity: 5 Pcs Type: M6*40 Package List: 5 * M6 x 40mm SleeveSeuais