Specification: Thread Size: 5/16-18 ; Hex Width: 13.8mm/0.54"; Height: 6.5mm/0.25";Material: Carbon steel.. Application: Used for pipe furniture, tables and chairs, shelves, vehicles, trolley casters, and other threaded connections.. Feature:3 Projections for Quick, Strong Welds.Hexagonal Shape for High Torque Resistance.. Steps: First clean the welding surface, using sandpaper or steel brush to remove the joint oxide. Second, welding a little bit and adjust the verticality of the thread. Finally, solder all the solder joints.. Advantages: Flat solder joints, steel, good weldability, thread size accuracy..
