Ballpoint Pen Springs (Compression)

Item: Ballpoint Pen Spring  Place of Origin: Guangdong, China Brand Name: Aukin Precision  Product Name: Ballpoint Pen Spring (Compression) Core Material: - High-carbon steel or stainless steel (302/304 SS) for durability and corrosion resistance - Alternative: Music wire for high tensile strength and flexibility Coating:  - Zinc plating or electroless nickel plating for corrosion resistance - Optional: Colored coatings for aesthetic appeal Application: Ballpoint pens, retractable writing instruments and other small mechanical devices Surface Treatment:  - Polished finish to reduce friction and ensure smooth operation - Stress-relieving heat treatment for improved fatigue resistance Technical Specifications: - Wire Diameter: 0.2 mm to 0.5 mm (customizable) - Outer Diameter:  2 mm to 6 mm (customizable) - Free Length: 10 mm to 30 mm (customizable) - Load Range: 0.1 N to 2 N (depending on design) - Operating Temperature: -10 degree celsi…