... machine part 1.machine screw size,M3-M36 2.carbon, stainless steel 3.zinc plated,black,etc 4.flat,pan, etc. cnc machining part ... ,black.StandardISO,GB,DIN,JIS,ANSICetificateISO9001-2008,SGS,ROHSPackageSuitable for sea and air transportation or as required Lead Time7 ... qty.superiorityCustomized size and spec /OEM available Stock goods,free for samples.Picture:4) Factory:5) Packing:6) Company Information ...