... :ISO,GB,DIN,JIS 4.ISO9001-2008,SGS,ROHS Acme thread rod1.Surface Finish: annealing, natural anodization, heat treatment, polishing, ... commit ourself to smile to each customerDetails: Product name Acme thread rodSpecificationM2-M36MaterialMild carbon steel, medium carbon steel, high carbon steel ... superiority Good quality,free for samples.Factory: Packings:Certification:Transportation: Thread rod