... ). Standard: ASTM A193, A320, DIN975, DIN976, SAE J429 •Threaded rods/stud bolts (double end studs or full threaded studs).•Standard: ASTM A193 ... .9, 12.9•ANSI surface: plain, black, Z.P, H.D.G, etc•Diameter: M3-M20•Materials: stainless steel 304/316 ... L/C at sight•Packing: per your demand. Threaded rods/stud bolts