C3604 Brass CNC Turn-Mill Parts for Wind Power Equipment

This custom C3604 brass machined part is produced for wind power equipment and supplied to a customer in the United States. The component is approximately 48 × 20 mm, with an order quantity of around 40,000 pieces.
Its geometry combines features that belong naturally to different machining processes. The cylindrical body and threaded section are suited to CNC turning, while the non-round head geometry requires milling.
For this type of component, CNC turn-mill machining provides a practical way to combine rotational and non-rotational features within one production plan.
Key dimensions are controlled to approximately ±0.05 mm according to the customer's drawing.
 

Project Details

This is a made-to-drawing component rather than a standard threaded fitting or fastener. The machining route is determined by the actual geometry and the production quantity.
 

Why This Part Belongs in a Turn-Mill Process

The cylindrical features are straightforward turning work.
Outside diameters, shoulders and the threaded section can be produced efficiently on a CNC lathe. The head geometry is different because it includes non-round features that require milling.
That makes the part a natural candidate for CNC turning and milling.
The advantage is not simply that more operations can be performed. The more important benefit is that the production route can be planned around the complete component rather than treating turning and milling as unrelated jobs.
For a batch of around 40,000 pieces, this becomes increasingly relevant.
Every additional transfer between machines means more unloading, handling, locating and clamping. When repeated thousands of times, those steps affect throughput and production cost.
 

Setup Reduction Becomes a Production Decision

For prototype quantities, a second setup may be perfectly acceptable.
For production quantities, it is worth asking whether that setup adds value.
If a component can be turned first and then milled with fewer repositioning steps, the overall manufacturing route can become easier to control.
This is one reason turn-mill machining services are useful for parts that combine:

• Cylindrical turned features
• External or internal threads
• Flats
• Milled heads
• Cross holes
• Slots
• Additional off-axis geometry

The goal is not to eliminate every secondary operation. It is to avoid unnecessary ones.
That distinction matters to production buyers because machining efficiency is built into the final unit cost.
 

The Thread and Milled Head Must Still Work as One Component

Reducing setups is useful only if the final geometry follows the drawing.
For this part, the threaded section, turned diameters and milled head features are all part of the same mechanical component.
The relationship between those features may affect fit or assembly.
Key dimensions are specified to ±0.05 mm, but we do not assume every feature requires the same level of control. Machining and inspection follow the customer's drawing, with more attention given to the features that influence function.
For a CNC turned and milled part, the relationship between features is often more important than a single general tolerance statement.
 

Why C3604 Brass Works Well for This Type of Machining

The specified material is C3604 brass.
C3604 is widely used for precision machined hardware because of its good machinability. It performs well in turning, threading, drilling and milling operations.
That makes it particularly suitable for a component that combines several machining methods in one production route.
At larger quantities, machinability can also influence:

• Tool life
• Chip control
• Cycle time
• Threading stability
• Milling efficiency

These factors matter because they affect production consistency and cost per part.
Material grade still follows the customer's specification. We manufacture the requested C3604 rather than automatically substituting another brass alloy.
 

Production Cost Is More Than Machine Cycle Time

When buyers compare quotations for custom CNC machined parts, piece price is usually one of the first things they look at.
But the process behind that price matters.
For a component like this, cost can be influenced by:

• Number of setups
• Turning time
• Milling time
• Thread machining
• Tool life
• Part handling
• Inspection requirements
• Order quantity
• Packing and shipping

This is why the same drawing may be approached differently at 50 pieces and 40,000 pieces.
The geometry has not changed. The manufacturing priorities have.
For production orders, a practical machining route needs to balance drawing requirements, machine time, handling and repeatability.
 

CNC Turning and Milling Services for Custom Production Parts

YS Precision provides CNC turning and milling services for custom parts that combine rotational and non-rotational features.
Our machining capabilities include:

• CNC turning
• CNC lathe machining
• CNC turn-mill machining
• CNC milling
• Swiss-type turning
• External and internal threading
• Drilling and tapping
• Cross-hole machining
• Secondary CNC machining

We manufacture brass, aluminum, stainless steel, carbon steel, copper and engineering plastics according to customer drawings.
Typical projects include turn-mill parts, threaded components, shafts, pins, bushings, connectors and other custom CNC machined hardware.
We support prototypes, small batches and repeat production for wind power equipment, automation, electronics, medical equipment and general industrial applications.
 

From Machining to U.S. Delivery

For overseas buyers, production does not stop at final inspection.
Finished components also need to be packed appropriately and shipped according to the customer's delivery requirements.
For this project, we arrange shipment of the completed parts to the United States.
This allows the customer to coordinate machining, production follow-up and international delivery through the same project.
 

Have a Part That Needs Both Turning and Milling?

If your component combines a round body with threads, milled heads, flats, holes or other off-axis features, send us the complete drawing for review.
For quotation, provide:

• 2D drawing and/or 3D model
• Material specification
• Critical tolerances
• Thread requirements
• Order quantity
• Expected annual demand
• Surface requirements
• Inspection requirements
• Delivery destination

We can review the geometry and determine whether CNC turning, turn-mill machining or a combination of processes is the more practical production route.
Send your drawings to YS Precision for a CNC turn-mill machining review and quotation