Stud welding with tip ignition; threaded studs UNC, inch size #8-32X0.50 Stud ( Capacitor weld. ) steel 1000 pcs. #1/4-20X1.50 Stud ( Capacitor weld ) Steel 1000 pcs. #10-32X0.50 Stud ( Capacitor weld ) Steel 1000 pcs.