Detail parameters Shaft components Radial dimensions can be up to 0.0015mm Roundness 0.001mm Concentricity 0.0025mm Roughness 0.01 Minimum aperture diameter of hole parts 0.3mmï¼?depth can up to 3mm 1 mm diameter can be radial 0.002mm Roughness 0.02-0.04 Plane machining tolerance can be reach to 0.002mm and aircraft horizontal measurement tolerance 0.0015mm Ceramic processing thread The minimum internal thread can be M2