Precision Thread Milling Services – High Accuracy Internal & External Threads
We provide CNC thread milling services for precision internal and external threads in metal and plastic components. Our advanced CNC equipment allows us to deliver consistent, high-quality threads for demanding applications across industries.
- ✓ Metric, UNC, UNF, BSP, NPT threads available
- ✓ Internal / external / left-hand thread capabilities
- ✓ Ideal for stainless steel, titanium, aluminum, engineering plastics
- ✓ High accuracy with burr-free, consistent finish
What is Thread Milling?
Thread milling uses a CNC-controlled helical interpolation path to cut threads using a rotating cutter, offering higher flexibility than traditional tapping methods. This process allows for precise control over thread dimensions, making it suitable for complex or challenging threading requirements that cannot be easily achieved with standard tapping.
Thread Milling vs Tapping
Choosing the right threading method is critical to avoid tool breakage, scrap parts, and ensure your project meets precision requirements. Below is a detailed comparison to help you decide which method fits your project:
Thread Types We Machine
✓ Metric threads (M2–M30+)
✓ UNC / UNF unified threads
✓ BSP / NPT pipe threads
✓ ACME / custom profile threads
✓ Left-hand threads
✓ Deep thread profiles
Materials for Thread Milling
✓ Stainless steel 303 / 304 / 316
✓ Aluminum 6061 / 7075
✓ Titanium & titanium alloys
✓ Brass & copper alloys
✓ PEEK / Nylon / Delrin
✓ Hardened steels up to 65 HRC
Machining Capabilities
When to Choose Thread Milling
Thread milling is the optimal solution for your project if you are facing any of the following challenges:
- ✓ Working with difficult materials (titanium, stainless steel, hardened alloys)
- ✓ Machining threads in blind holes that require full thread depth
- ✓ Producing large diameter threads that are hard to tap
- ✓ Requiring high precision threads for critical applications
- ✓ Working with expensive parts where broken taps risk scrapping the entire component
- ✓ Needing custom or non-standard thread profiles
Industry Applications
✓ Aerospace components
✓ Medical devices & implants
✓ Automotive precision parts
✓ Hydraulic manifolds
✓ Oil & gas equipment
✓ Precision machinery parts
Frequently Asked Questions
Is thread milling better than tapping?
There is no universal better option. Thread milling is preferred for difficult materials, blind holes, large threads, and high-precision jobs where broken tap risk is a concern. Tapping is more efficient for high-volume production of standard small threads in soft materials.
What materials can be thread milled?
We can thread mill a wide range of materials including stainless steel, aluminum, titanium, brass, and engineering plastics like PEEK, Nylon, and Delrin. We also support hardened steels up to 65 HRC.
Can you make custom threads?
Yes, our CNC thread milling capabilities allow us to produce custom thread profiles, non-standard pitches, and special thread forms that are not covered by standard industry specifications.
What tolerance can you hold for thread milling?
We can hold tight tolerances ranging from ±0.01mm to ±0.03mm for thread milling projects, depending on the material, thread size, and specific requirements. We also support standard thread classes including 6H, 2B, 3B, and custom specifications.
Get a Thread Milling Quote
Fill out the form below to get your custom quote within 24 hours. We review all drawings and requirements carefully to provide accurate pricing and lead time.
