... designs are welcome. 3.distributorship offered 4.OEM servic copper casting part 1>Quick details a). M6-M30 stainless steel screws ... strength, Low temperature tenacity, compatibility, High corrosion resistance c). Standard: ISO 9001~2000 d). Diameter: M 0.8 - M 16 Length ... -M22*length b) Nut sizes:M4-M22 c) Standard:GB,ISO,DIN,BS,JIS,ANSI/ASME,BA d) GRADE:Gr2,Gr5 ...