Size: M8-1.25. Features an internal nylon ring that grips bolt threads better than a standard finished nut. Great for use in applications where the bolt may be subject to vibration. Can also be used as a secondary nut to help lock the main nut in place. The side with the nylon insert should face towards the tip of the bolt, not towards the surface being fastened. Thread Type: Coarse, Thread Class: 6H. Specification(s) Met: DIN 985 CLASS 8 and DIN 267.
