660 studs, ba magnetic a cikin tashin hankali, amma na iya zama kadan magnetic ta hanyar walda. Ko da yake yana da ƙarfin aiki iri ɗaya da juriya da juriya da ɓarna, ASM A453 Gr. 660 Hex shugaban hulkanci suna haifar da welds mai ƙarfi saboda wadatar carbon. Astm A453 Dig 660 Studs sun dace da aikace-aikacen yanayin zafi. Wannan matakin na masu faforanci ya kasu kashi, B, C, D maki. Materials are carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, titanium, aluminum, vanadium, boron. Astm A453 Class 660 kusoshi sun sami ƙarfinsu da juriya na lalata daga haɗuwa da kayan.