Rapid expansion of domestic lightweight smart wearable, minimally invasive medical device and micro industrial sensor industries in 2026 drives 18.6% year-on-year growth in demand for M0.5-M2.0 ultra-small micro precision screws. The high-end micro fastener market was long monopolized by Japanese and Taiwanese manufacturers previously, with long delivery cycle (30~45 days) and high procurement cost of imported micro screws. In recent two years, leading domestic micro screw manufacturers break through core processes of micro cold heading mold and micron-level optical sorting, and compliant domestic micro screws realize mass substitution gradually.
| Downstream Terminal Category | Main Screw Sizes | Core Precision Requirement | Domestic Substitution Rate |
| Smart Watch / AR Wearable Devices | M0.6~M1.2 SUS304 Stainless Steel | Tolerance ±0.005mm, Non-magnetic Passivation | 62% |
| Minimally Invasive Endoscope Medical Equipment | M0.8~M1.4 TC4 Titanium Alloy | Tolerance ±0.003mm, Biocompatible Passivation | 38% |
| 5G Micro Sensor / UAV | M1.0~M2.0 Carbon Steel / Stainless Steel | Tolerance ±0.006mm, Long-cycle Vibration Durability | 75% |
1. Procurement Cost: Domestic micro screws only account for 55%~70% of Japanese imported parts of identical size, greatly reducing material cost of complete terminal machines; 2. Delivery Cycle: Domestic spot goods 3~10 days, custom samples delivered within 7 days; Japanese import transit cycle 30~45 days, sample cycle over 15 days; 3. Precision Upper Limit: Japanese products stably reach ±0.002mm, top domestic micro screws achieve ±0.003~±0.005mm, meeting standards of most consumer electronic and general medical equipment; 4. Custom Flexibility: Domestic manufacturers support small-batch non-standard modification of head and recess, Japanese suppliers only supply mass-produced standard sizes with high custom threshold and expensive cost.
1. Ultra-small cold heading mold: M0.5 ultra-fine thread forming mold requires extremely high hardness and wear resistance, ordinary mold steel is easy to wear leading to missing thread and size drift; leading enterprises adopt imported hard alloy mold with over 5x longer service life; 2. Micron-level CCD optical inspection: Micro defects on thread and head of tiny screws only reach micron level, ordinary vision equipment cannot identify, requiring special high-magnification industrial lens matched with customized detection algorithm.
Continuous capacity release of domestic hard alloy micro molds leads to slight downward processing cost of micro screws; manufacturers equipped with 10,000-class dust-free workshop and full-set CCD automatic sorting production line achieve leading order growth; medical titanium micro screws hold the largest domestic substitution space, and substitution ratio is expected to break 50% within next two years; overseas small & medium wearable device brands gradually open access for domestic micro screw suppliers.