Shanghai Yijun Precision Technology Co., Ltd.

Shanghai Yijun specializes in global high-precision micro screw solutions. As a technology-driven manufacturer in the micro fastener field, we are committed to providing ultimate precision screws ranging from M0.5 to M3 specifications for the aerospace, medical device, precision electronics, and micro machinery industries.Through an ISO9001-certified production system and fully automated digital production lines integrating CNC turning centers with optical inspection equipment, we achieve millimeter-level precision control with tolerances of ±0.002mm. Our core strengths include micrometer-grade manufacturing capabilities that enable mass production of full-range micro screws from M0.5 to M3, covering over 12 materials such as titanium alloy, stainless steel, copper, aluminum, and carbon steel; zero-defect quality control through 100% full inspection achieving defect rates below 50 PPM; complemented by an agile supply chain capable of delivering million-unit orders within 15 days. Conti…