Pack of 50 hexagonal nuts with M16 notched collar. A safe and effective piece of bolt and rod assembly that you can easily tighten or loosen with a socket wrench, open end wrench or adjustable wrench. The notched collar is designed to avoid the possible loosening of the screw - in other words it is a locking system. Undoubtedly a part widely used and preferred by installers for fastening tasks - means of transport, agricultural machinery Dimensions: Nut size: for M16 bolt. Total nut height: 16mm. Nut height: 11mm. Nut outer width: 24mm. Outside diameter of the flange: 33mm. Unit weight: 43.078g. DIN 6923. Material: carbon steel. Cover: galvanized. Colour: silver Thanks to its hexagonal shape you will have a perfect key grip to obtain the expected result. It is an indispensable fastening device that you need to carry out your professional activities, to create an optimal and reliable assembly. The self-locking 6-point safety nut remains the ideal solution for confined spaces and for joining different elements on a long-term basis - machine building, mechanics, household appliances, interior and exterior fittings The advantage: the notched flange nut is used to prevent the loosening of bolts and rods caused by vibrations - frequently present in the repair and maintenance workshop. Self-locking nuts are for use on bolts and threaded rods. Lightweight and sturdy for quick assembly and easy clamping. By completing your tool box, you will be meeting the requirements of potential customers in a professional manner Namely: this splined collar nut consists of a hexagonal head with a notched collar. Note: whatever type of maintenance you choose, always remember to have adequate devices. Corrosion resistant / does not rust /. The self-locking safety nut with metric thread inside will be your first assistant for you to make the durable and removable assembly.