1) High-precision,professional manufacturing 2) ACME,DIN, JIS,BSW, GB 3) ISO9001:2008, OEM service 4) low price/high quality Standard ACME,JIS,DIN,BSW,GB etc.(including non-standard) Diameter 2mm-80mm Length The longest 8000mm Screw pitch(lead) Up to 50mm Material SUS304,SUS303,Cr13,2Cr13,3Cr13,40Cr,20Cr,45#,35#,20#,Q235,copper,aluminum and etc Application Products are widely used in tool, ...