... Nameblack plated DIN 931 bolt supplier2.standardDIN, ASME,JIS,BS,FR and GB,Nonstandard bolt(according to your order),etc3.MaterialCarbon ... Steel,Alloy steel,stainless steel and brass4.Grade4.8,6.8,8.8,10.9 etc5.FinishBlack,Zinc plated,Copper plating,Phosphating ... specified no-standard fasteners including DIN,ASME,ISO,BS,JIS,FR and GB. PROMPT DELIVERY: To meet client’s requirement ...