Material:Carbon steel, Stainless steel,copper. Surface treatment:Plain,zinc plated,black,yellow zinc plated etc. Size:M2-M20 or as request Length:As request Standard:ISO,GB,DIN,JIS,NFE Function:Aatomobile,electronic,mechinery Certificate:ISO9001-2008,SGS,ROHS Packing:Poly bag+cartons or according customers request. Moq:50pcs Port:Shenzhen,Guangzhou, Hongkong or as request. Show More