5mm Custom High Precision Micro Bolt for Vacuum Cleaner Motor Internal Parts. Wide Material Selection: Supports Carbon steel, Alloy steel, Stainless steel, Aluminum, Brass, and more. High Precision Tolerance: Diameter tolerance up to 0.002mm, Roundness 0.0005mm, Roughness Ra0.05. Customizable Dimensions: Diameter 0.3-25mm, Length 2mm-1000mm, fully customizable according to drawings. Advanced Heat Treatment: Offers Oil Quenching, High frequency quenching, Carburization, and Vacuum Heat treatment. Diverse Surface Treatment: Includes Nickel/Zinc plating, Passivation, Phosphating, Black coating, and Anodizing. ISO & IATF Certified: Certified with ISO 9001, ISO14001, and IATF16949 for quality assurance. OEM & ODM Services: Full customization available from samples, designs, or minor adjustments. Professional CNC Equipment: Equipped with Citizen, Tsugami Swiss-type machines and Nissin grinding machines.