EN
A few thousandths of a millimetre rarely looks like much on a drawing. But in the real world, that sliver of difference decides whether a medical device fits together flawlessly, whether an aerospace bracket holds under vibration, or whether a sensor reads true at the limit of its range. For manufacturers sourcing cnc machining tight tolerance parts, the tolerance printed on a blueprint is not a technical detail—it is the difference between a part that works and a part that fails in the field.
Tolerance is the permitted deviation from an ideal dimension. Standard CNC work commonly holds around ±0.05 mm to ±0.1 mm, which is perfectly fine for many applications. Tight tolerance machining pushes far closer to the physical limits of the machine and the material, holding dimensions in the range of ±0.01 mm or even ±0.002 mm. At that scale, heat, tool wear, fixturing pressure, and even the temperature of the workshop all become variables that must be controlled, not ignored.
This is why not every shop can promise the same numbers. A machine capable of the job is only half the equation; the process control around it matters just as much. Partners experienced in precision cnc machining understand that repeatability comes from disciplined setup, measured tooling, and careful inspection at every stage.
Tight tolerances are rarely a goal in themselves. They earn their keep through the performance they unlock:
When these requirements meet materials that are difficult to cut—titanium alloy, Inconel, hardened steel, or PEEK—the challenge grows. That is precisely the terrain where a cnc machining company with real depth of experience earns its reputation.
ANOK Precision Manufacturing, a custom precision machining factory in Shenzhen, China, has built its process around repeatable accuracy. The company operates 50-plus machining centers alongside nearly 15 CNC turning machines, and backs them with an ISO 9001:2015 quality system that governs every job from quoting to final inspection. Across its cnc machining services, ANOK routinely holds tolerances down to ±0.002 mm, with up to ±0.005 mm achievable on complex geometries.
Getting from “good enough” to ±0.002 mm is not magic. It comes from four disciplines: capable multi-axis equipment, controlled fixturing, stable thermal conditions, and rigorous measurement. ANOK applies all four on every tight-tolerance order.
The capability spans the full machining spectrum. CNC milling and 4-axis and 5-axis machining handle complex, multi-faceted geometries; high-precision CNC turning shapes cylindrical parts and threads with the same ±0.002 mm standard; precision surface grinding delivers flatness, parallelism and finishes down to Ra 0.4; and wire EDM cuts hardened steel, titanium, and carbides without thermal damage, holding tolerances as tight as 0.003 mm.
Tolerance claims mean little if the material is not handled correctly. ANOK machines a broad range of metals and plastics, and understands how each one behaves under the cutter. Metal work spans aluminum, brass, copper, titanium, magnesium, stainless steel, alloy steel, carbon and mild steel, tool steel, and tungsten. Plastic machining covers ABS, Nylon, POM, PEEK, PET, PC, PTFE, PMMA, Delrin, and ULTEM.
Difficult-to-machine alloys such as titanium Ti-6Al-4V and Inconel are a particular strength, which is why ANOK serves industries where precision is non-negotiable—medical, aerospace, food equipment, communication, agriculture, mechanical, motorcycle, and automation.
A part is only as good as the measurement that proves it. At tight tolerances, inspection is not an afterthought—it is engineered into the process. ANOK's quality control checks dimensions, form, and surface finish against the drawing, and documents results so customers can verify compliance. For industries with strict standards, the company references ISO 13485 and AS9100 and addresses FAA/EASA airworthiness and MIL-STD-810G requirements.
That disciplined approach also supports cost-effective sourcing. Because tight tolerances multiply the cost of every mistake, working with a cnc machining supplier that gets it right the first time reduces scrap, rework, and the hidden expense of late, out-of-spec parts.
Bring your tightest dimensions to a partner that takes them seriously. Whether you need a single prototype or a production run of precision components, ANOK will review your design, confirm manufacturability, and deliver parts that hold the tolerances your application depends on. Contact ANOK Precision Manufacturing today to discuss your project.