1) High-precision,professional manufacturing 2) ACME,DIN, JIS,BSW, GB 3) ISO9001:2008, OEM service 4) low price/high quality Standard ... Diameter 2mm-80mm Length The longest 8000mm Screw pitch(lead) Up to 50mm Material SUS304,SUS303,Cr13,2Cr13,3Cr13,40Cr,20Cr ... car and other industry. pls enquiry us Quality Professional manufacturing, high-precision, smooth and clean without burr MOQ 1000 pcs, we also ...