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 ... *90-3008)manufacturer brief:Hebei Saite Fastener Co.,Ltd Is a private corporation, which is specialized in producing and selling fasteners.The company ... the quality to meet the demand of the market. Hex Flange Nuts