... stud bolt Description Standard:ANSI,ASTM,JIS,DINGrade:Class 4.8 / 5.8 / 6.8 / 8.8 / 10.9 / 12.9 & Grade 2 ... ),nickel plated, Black Oxided,etc.Packing:Bulk or small packing according to requirement Shanghai Detroit Precision Fasteners Co., Ltd, located in Shanghai ... , aluminum, brass or other special materials.Our products are manufactured according to DIN, ANSI, AS, BS, JIS, GB, ISO and other standard ...