fittings burkit 1/2"-28 unef tap and die set right hand 1/2 x 28 hss machine thread set 22lr 223 5.56 9mm

tap length: 3.76"/95.5mm, thread head: 1.24"/31.5mm, die od: 1.5"/38mm, die thickness: 0.39"/10mm, tpi: 28, accuracy class: 2a. technology: straight fluted design, fast chip removal, and no blocking make your threads machining faster and easier. applications: widely used in cast iron, copper, brass, abrasive steel, a3 steel, and other metal materials to process threads..syi