Hexagonal welding nuts solve the issue of ordinary nuts not being able to secure the base. One side of the nut features three welding points and a circular boss. The boss is for positioning, and the welding points are for welding. First, a positioning hole is punched into the base, and the nut's boss is placed on top of the hole. Then, a spot welder is used to weld the nut to the base. The welding principle involves melting the three welding points of the nut with high heat, causing them to melt onto the base, thereby achieving the welding effect. This type of connection is non-detachable.

Hex nuts are used in conjunction with bolts and screws for the purpose of connecting and securing machine parts. The WF002 hex nut, specifically the 1-inch type, is widely applicable. Grade C nuts are used on machinery, equipment, or structures with rough surfaces and less stringent precision requirements; Grade A and B nuts are used on machinery, equipment, or structures with smooth surfaces and higher precision requirements.