gearbox worm shaft iron edge's parallelism:0.002 out diameter tolerance:+/-0.001 length tolerance:+/-0.001 gearbox worm shaft1.Material: S45c2.Product standard: ¢10*44mm3.Product features: side mill parallelism:0.002 out diameter tolerance:+/-0.001 length tolerance:+/-0.001 surface roughness:0.1-0.84.Surface treatment:: kinds of plating (Zinc, Nikel, Chrome, Tin, Ag); Painting, Powder, Anodizing, ...