square threaded rod 1.Delivery time:7days 2.OEM:manufacturer 3.standard:ISO, ... Method: cnc machining, turning, milling, drilling, grinding, broaching, welding and assembly.3.Varipus standards:ISO,GB,DIN,JIS,ANSI4.ISO9001-2008 ... quality,free for samples.Factory: Packings:Certification:Transportation: square threaded rod