IWT Stud Welding is a cutting edge manufacturer of capacitor discharge and drawn arc stud welding equipment and fasteners, while also stocking replacement parts to suit all other manufacturers’ CD and arc stud welding equipment. We stock mild steel, stainless steel and aluminum fasteners (flanged, DIN, non-flanged) in UNC, UNF and metric sizes for immediate delivery. LYNX4 Line of Equipment: The LYNX4 machines are like no other stud welding systems on the market. The unique design and state-of-the-art technology is the formula for portable, flexible and reliable machines. All of our equipment is backed up by a one-year parts and labor warranty and technical support via our 800 number.