Pack of 100 M6 hex nuts with serrated collar. A secure and effective part for assembling 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 is a locking system. Probably a widely used part and preferred by installers for fastening tasks - means of transport, agricultural machinery Dimensions: Nut size: for M6 bolt. Total nut height: 6mm. Nut height: 4mm. Nut outer width: 10mm. Collar outer diameter: 13mm. Unit weight: 2.956g. DIN 6923. Material: carbon steel. Cover: zinc plated. Color: Silver 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