Mechanical Parts Maching--electro-polishing

milling Mechanical Parts Maching milling Mechanical Parts Maching Product's Name:Maching parts-VIS screw Technical Requirements:1, Material: X30Cr13 or 2Cr13;2, heat treatment: quenching HB250-280;3, no note by internal thread tolerance class 6H, external thread tolerance class 6g level by the Executive;4, did not note the implementation of tolerance levels by GB/T1804-m;5, the size of a small box labeled side of the importance of size;6, sharp, blunt down C0.2-0.3;7, the surface scratch free, no foreign body inside8,OEM and customer's design 9.surface treatment :electro-polishing tolerance gradeGB/T1804 class size limit deviations of linear values0.5 3>3 6>6 30>30 120>120 400>400 1000>1000 2000>2000 4000middle-m±0.1±0.1±0.2±0.3±0.5±0.8±1.2±2Note: The special requirements of tolerance marked by "middle-m" implementation