Pack of 100 M5 hex nuts with serrated collar. A secure and effective assembly part for bolts and rods that you can easily tighten or loosen with a socket wrench, open-end wrench, or adjustable wrench. The serrated collar is designed to prevent the screw from loosening - in other words, it's a locking system. Undoubtedly a widely used and preferred part by installers for fastening tasks - means of transport, agricultural machinery Dimensions: Nut Size: for M5 bolt. Total Nut Height: 5mm. Nut Height: 3mm. Nut Outer Width: 8mm. Flange Outer Diameter: 11mm. Material: Carbon Steel. Cover: Zinc Plated. Color: Silver Material: 304 Stainless Steel Size: M5 Quantity: 100 Surface: Smooth polished surface, comfortable hand feeling. Nut serrations can help increase the holding force of the nut and prevent loosening. Thanks to its hexagonal shape, you would have a perfect wrench grip to achieve the desired result. It is an essential fastening device that you need to carry out your professional activities, to create an optimal and reliable assembly. The self-locking hexagon safety nut remains the ideal solution for confined spaces and for long-term assembly of different elements - machine construction, mechanics, household appliances, interior and exterior fittings. The advantage: the nut with a serrated flange 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 robust for quick and easy assembly. Quantity delivered: 100 pieces