Hex Flange Nuts 1. Material: 35k,q235, c1010 2. Surface: Black, ZP, ... .8,6.8,8.8 4. Standards: DIN933/931 Hex Flange Nuts1. Material: 35k,q235, c10102. Surface: Black, ZP, HDG3. Grade ... 5.8,6.8,8.8 Size:M6*16-50 M8*20-100 M10*20-100 M12*20-100 M14*30 ... .8 6.8Finish:plain,black,zinc plated(yellow,blue)Size:M8*55-120 M10*60-120 M12*60-120 MM14*55 ... the quality to meet the demand of the market. Hex Flange Nuts