Wholesale M4-M8 Aluminium Extrusion Profile Carbon Steel Diamond Nuts / rhonbus nuts

Electroplating prevents rust and is durable.
These nuts are used to provide wood threaded sleeves.
The serrated design allows an extension of the surface between nut and workpiece, is non-slip and easy to lock.
Suitable for indoor and outdoor use. Used for wooden climbing wall plywood chipboard, speaker boards, wood furniture and other woodworking projects.