... according to the quantitySpecifications:Name:T-head boltsStandard: GB37,DIN,JIS,ANSIGrade:Class 4.8, Class 6.8, Class 8.8 ... , Class 8.8, Class 10.9, Class 12.9StandardGB37,DIN,JIS,ANSIColorsilver,plainTechnology:cold forging,heat treatment,Packing:in bulk,in ... screws,bolts,nuts,washer and relative hardwarePhotoes as following T type stainless steel screw