... 4.COMPETITIVE PRICE 5.Bolt,Nut,Screw Specifications1.Name: DIN 931 bolt 2.Material:Carbon Steel3. ... specification of our din 931 Bolt? 1.Nameblack plated DIN 931 bolt supplier2.standardDIN, ASME,JIS,BS ... ,FR and GB,Nonstandard bolt(according to your order),etc3.MaterialCarbon ... term business with clients in Europe,North and South America,Southeast Asia,Australia and Middle East.With clients ...