M6M8M10 Carbon steel blackened inner and outer teeth embedded nut countersunk head inner hexagon black nut with medium furniture nut for Furniture Assembly

Our carbon steel blackened insert nuts are professional fasteners designed specifically for furniture assembly, woodworking, and hardware installation scenarios. Made of high-quality carbon steel with black oxide treatment, they feature excellent corrosion resistance and wear resistance, suitable for indoor and outdoor use, effectively preventing rust and extending service life.

 

Equipped with inner and outer teeth design, the nuts have strong anti-loosening performance, ensuring stable fixation without easy loosening even under vibration. The countersunk hexagon head and built-in washer (belt mediator) design ensure a tight fit with the installation surface, keeping the appearance neat and avoiding damage to the fastened parts.

 

Available in M6, M8, M10 sizes, these nuts are widely used in furniture assembly, woodworking projects, hardware fixing, and mechanical equipment installation. They support customized specifications to meet different installation needs, with precise thread and stable performance, suitable for both professional construction and daily DIY use.