1). Material: stainless steel304/316 2). Diameter: M3--M56 3). Length: as customer's needs 4). Standard: DIN975/ ... -200,201,202,304,3164)Length: 1000mm-6000mm 5)Size: M3-M566)Coating: Nature, Zinc plating, blackening, hot dip zinc, environment ... the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0.32Straightness0.01/200mm DIN975 M8 (M3-M56) black coated full thread rod,all thread rod anchor ...