HIGH QUALITY STEEL: These nuts are made of Aleacion de Acero Aleado, one of the most corrosion resistant metals out there, allowing them to last longer than other nuts on the market today ANY NUTS YOU CAN USE ON COUNT : Our hex nuts are very strong and are ideal for indoor and outdoor use. This zinc plated alloy steel is superior to ordinary steel and offers good rust resistance VERSATILE: The most commonly used and versatile nut. It screws onto a bolt, cap screw or threaded rod of the same size. Finished nuts are standard thickness six sided nuts or heavy duty hex nuts. Screws onto a bolt, cap screw or threaded rod of the same size. Use washers to help distribute the load (not included). AVAILABLE: Hex nuts are ideal for use in wood and wet environments. They are strong, corrosion resistant and will support all your projects. DIMENSIONS: Diameter : Thread type: Coarse (standard) - Material: Zinc plated alloy steel. M16 (16mm x 24mm) (Pack of 10)