bolt standard : JIS , DIN . AISI, GB . material : carbon steel , stainless steel , alloy steel .

Materials: carbon steel, alloy steel, stainless steel or others Surface treatment: plain, black oxide, blue zinc, yellow zinc, black zinc, nickel and so onDiameter: 3 to 72mmLength: 6 to 450mmClass: class 4.8, class 8.8, class10, 9, class 12, 9. Grade 2, Grade 5, Grade 8, A2-70, A4-80 A193 GR.B8, B8MWe can provide almost all kinds of fasteners, please contact us freely

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