TRUSCO Hexagon Nut Hard Lock Nut Stainless Steel B59-0008

It has a completely close loosening effect with almost no turning of the screw. It can be fully fixed even in the middle of the screw. Can be used repeatedly. Prevents bolt breakage and extends the life of the fastener itself. Ideal for tightening different materials (wood, plastic, etc.) that generate vibrations. Subsequent vibrations generate a large load repeatedly, and the temperature changes are large (high temperature, low temperature) (gas turbine, etc.), repetitive external force applied to the bolt axis direction, right angle and bolt axis direction, and once tightened, it cannot be maintained in dangerous areas that cannot be maintained by humans.