Why Yecheng CNC Bolts
Consistent Quality Material reports, FAI, and in-process QC ensure every batch is stable.
Fast & Reliable Lead Time Samples in 7–15 days, mass production in 20–30 days.
Free DFM Feedback We help optimize your design to reduce machining risks and cost.
NDA Protection & Direct Engineer Support Communicate directly with engineers, not sales only.
Proven Experience 50,000+ custom CNC bolts delivered for robotics and automation industries.
Engineering Capabilities for Precision CNC Bolts
Thread Concentricity Control
We control thread-to-shaft concentricity within 0.01mm for precise assembly.
Burr-Free Fine Threads
Special deburring process for M2–M4 threads to avoid assembly interference.
Thin Wall Machining
Controlled deformation for lightweight bolt structures.
Surface Finish Control
Ra 0.8–3.2 μm depending on application requirements.
What Are CNC Bolts
CNC bolts are precision fasteners manufactured by CNC turning and milling, used in applications requiring tight tolerances, custom geometries, and consistent quality in small- to medium-volume production.
Compared to standard bolts, CNC bolts offer higher precision, better surface finish, and full customization flexibility.
Get a fast quote with competitive pricing today.
CNC Bolts By Materials
Different materials have been widely used in CNC bolts and precision fasteners. But it all depends where you use it.
See below to explore more details for each type.
We optimize the tools and cutting parameters to ensure stable thread accuracy and surface quality.
Custom thread-bolt processing (to avoid scratches and burrs) and support anodizing (to control color consistency).
Stable processing of complex fine-threaded screws and suitable for precision electrical parts.
CNC Bolts By Structure
Explore our custom CNC bolt solutions for different kinds of precision bolts.
Who We Work With
needing high repeatability fasteners
requiring tight tolerance & lightweight materials
needing low MOQ custom bolts
requiring stable batch consistency
Precision CNC Bolts Machining Capabilities
We focus on tight tolerances and complex structures in custom CNC fasteners that require custom geometry and reliable batch consistency.
CNC Milling: process the head structure of CNC bolts (such as hexagonal, slot type, and special-shaped structures).
CNC Turning: process the main body of CNC threaded parts, including the outer circle, end face, and pre-processing of the threads, to ensure dimensional stability.
Not only are we a non-standard bolt manufacturer, but we also focus on achieving complex structures and high precision requirements through CNC turning and milling processes.
No drawings? No problem.
Send us a sketch, sample, or idea — our engineers will help you optimize it.
CNC Bolts Thread Machining
Yecheng supports high-precision custom threaded bolts processing of internal and external threads, including metric, UNC, UNF and non-standard threads, ensuring that the thread gauges can pass the inspection.
We do thread processing as follows:
– Thread cutting (flexible for custom designs and small batches)
– Thread rolling (higher strength and improved surface finish)
– Thread grinding (for high precision requirements if needed)
All threads are inspected using Go/No-Go gauges to ensure compliance.
CNC Bolts Applications
Custom CNC Bolts are widely used in different industries. See the below information for your reference.
Used in lightweight and high-reliability assemblies where precision and material performance are critical.
Applied in precision assemblies where tolerance directly affects system accuracy and repeatability.
Ideal for compact designs requiring high-precision fasteners with excellent surface finish.
CNC Bolts Data Sheet
- CNC Bolts Materials & Surface Finishes
- CNC Bolts vs Standard Bolts
| Material | Characteristics | Advantages | Typical Applications |
| Aluminum (6061 / 7075) | Lightweight, easy to machine | Low weight, cost-effective, anodize | Electronics, drones, automotive lightweight parts |
| Stainless Steel (303 / 304 / 316) | Corrosion-resistant | High strength, rust-proof, chemical resistance | Medical devices, marine, food equipment |
| Carbon Steel | High strength | Low cost, suitable for structural use | Machinery, construction |
| Alloy Steel (4140 / 4340) | High strength & toughness | Heat-treatable, fatigue-resistant | Automotive, aerospace components |
| Brass (C36000) | Excellent machinability | Good conductivity, corrosion resistance, aesthetic | Electrical parts, decorative components |
| Copper (C11000) | High conductivity | Excellent thermal & electrical performance | Electrical systems, heat dissipation |
| Titanium (Grade 5) | High strength-to-weight ratio | Corrosion-resistant, biocompatible | Aerospace, medical implants |
| Engineering Plastics (PEEK / Nylon / Delrin) | Lightweight, non-conductive | Wear-resistant, chemical-resistant, non-magnetic | Electronics, medical, precision equipment |
| Feature | CNC Bolts | Standard Bolts |
| Precision | High (±0.01mm possible) | Medium |
| Customization | Fully customizable | Limited |
| Surface quality | Excellent | Standard |
| Complex geometry | Supported | Limited |
| MOQ | Low–medium | High |
Yes, we specialize in fully custom CNC bolts. Please provide your 2D&3D drawings, material requirement, surface finish and quantity, and we will come back with quotations ASAP.
You can send us drawings after we sign an NDA. We will check quotations and start a sample order for your testing. If everything is fine, we can go on bulk production.
We typically machine threads to 6H (internal) / 6g (external) per ISO standard. Tighter tolerances can be achieved with thread grinding or inspection control if required.
Yes, we can use custom CNC machining tools for non-standard threads CNC Bolts.
Yes, we have our in-house anodizing production line. We can accept anodizing according to your Pantone color chip. We can do zinc plating as well.
