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Coaxiality and flatness controlled within ±0.01 mm
Multi-process one-step forming ensures batch consistency and stability
Surfaces require anti-corrosion treatments such as passivation and anodizing
Internal thread precision must reach grade 6H or higher
Product Performance Advantages
Light weight, high strength, vibration resistance
Fatigue resistance, high and low temperature resistance, and corrosion resistance
Internal threads are smooth without jamming
Fit tightly with bolts, no slipping or disengagement after repeated assembly
No failure under long-term high-altitude / extreme environments
Extremely high locking reliability
Adapts to the core "zero-failure" demand of aviation equipment
Common CNC Machining Challenges & Solutions
Material Processing Difficulties
Titanium alloys and superalloys feature high hardness and toughness. Internal thread processing is prone to tool wear and chipping.
Solution: Hard alloy coated taps shall be used, with reduced cutting speed and increased feed rate to avoid built-up edge and ensure complete thread profile.
Precision Control Issues
Internal thread processing is prone to pitch deviation and irregular thread profile; deep-hole nuts may have inclined hole walls and substandard surface roughness.
Solution: Center drill positioning, step-by-step drilling + tapping, and cutting fluid cooling shall be adopted to reduce thermal deformation and ensure compatibility between internal threads and bolts.
Thread Processing Problems
Fine-pitch internal threads are prone to thread slipping and crest burrs.
Solution: Thread lead error must be strictly controlled, and go/no-go gauge inspection shall be performed after tapping to avoid loose fitting with bolts caused by insufficient thread precision.
Surface Treatment Problems
Scratches and burrs easily appear on machined surfaces, and iron chips tend to remain in internal threads.
Solution: Finishing and chamfering processes shall be added at the final stage of CNC machining to remove residual impurities in internal threads, prevent burrs from affecting assembly safety, and ensure uniform surface treatment.
Manufacturing Capabilities
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.
Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment.
Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.
Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.
Our Customers
Our customers include bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.
Technical Specifications
Main Products
Stainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners
Business Type
Factory / Manufacturer
Services
CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service
