... 3.SGS,ISO 4.black,zinc plated,HDG,etc square threaded rod 1.Features Material: Carbon steelFinished: PL, Zinc ... plated, HDG, Dacromet zinc, Black oxide, Nickel plated, Chrome plated, Cr+3, Brass ... days after order is confired2) Dimensions Product name square threaded rod Specification M2-50MaterialMild/medium/high carbon steelMaterial grade4.8 ...