... 5,M1.7,M2,M2.5,M3,M4,M5,M6 and so on 3.Standard: European or American standard4.Good quality with ... reasonable price ,timely delivery and great customer service 1.Material: stainless steel steel alloy steel ... 2.Processing:forged,casting,heattreatment,or quenching and tempering carburization 3.Quality:finest material and process.A Professional on Drawing analysis, ...