... ,etc 3.SGS,ISO 4.black,zinc plated,HDG,etc square threaded rod 1.Features Material: Carbon steelFinished: PL, Zinc plated, HDG, Dacromet ... days after order is confired2) Dimensions Product name square threaded rod Specification M2-50MaterialMild/medium/high carbon steelMaterial grade4.8,6.8,8.8 ...