Custom Stainless Steel Feed Auger Screw | Ø6mm × 431.8mm with LH Thread

When precision meets durability, you get a custom stainless steel feed auger screw designed for high-performance applications. With a 6mm diameter, 431.8mm length, and a left-hand M6 thread, this auger screw is tailored for plastic injection molding machinery requiring accurate material handling, corrosion resistance, and long service life.

Applications of Custom Feed Auger Screws

Our custom auger screws are engineered for a wide range of industries:
- Automation & Conveyor Systems
- Food Processing Machinery
- Pharmaceutical & Medical Equipment
- Packaging & Filling Machines
- 3D Printing & Extrusion Systems
- Chemical & Industrial Processing

Detailed Manufacturing Process of Long Stainless Steel Feed Auger Screw in Small Diameter

Detailed process content including material selection, CNC machining, helical flight formation, threading, finishing, and quality control.

1. Material Selection

We use high-grade SS316 or SS304 stainless steel for its excellent corrosion resistance and strength. The material is prepared from precision-cut bar stock and plates to ensure minimal deviation before machining.

2. CNC Machining of Shaft

The shaft is machined to a final diameter of Ø6.00mm ±0.02mm using CNC lathes equipped with steady rests to prevent deflection.
- Cutting Speed: 60–80 m/min
- Feed Rate: 0.05 mm/rev
- Depth of Cut: 0.3 mm/pass
- Coolant: Flood coolant to manage heat and prevent work hardening

3. Helical Flight Formation

The auger flights are milled precisely. Pitch and diameter are controlled to meet specific application requirements.

4. LH M6 Thread Machining

The left-hand M6 thread is cut with specialized tooling:
- Cutting Speed: 15–25 m/min
- Passes: 5–7 light passes
- Lubrication: High-performance cutting oil
- Tool: Ground profile threading insert

5. Surface Finishing

The entire screw is polished to achieve a surface roughness of Ra ≤ 1.6 µm, ensuring smooth material flow and reducing wear.

6. Quality Control

Each screw undergoes rigorous inspection:
- Dimensional checks along the full length
- Thread gauge testing
- Straightness measurement (≤0.2mm over total length)
- Surface roughness verification

Machining Challenges and Solutions

Producing such a precise component involves several challenges:

1. Long Shaft Deflection:
- Solution: Use of steady rests and optimized cutting parameters.

2. Accurate Auger Flight Milling:
- Solution: CNC-controlled specialized auger milling machine.

3. Left-Hand Threading Precision:
- Solution: Specialized tools and controlled threading cycles.

4. Stainless Steel Work Hardening:
- Solution: Sharp carbide tools, effective coolant management, and light cutting passes.

Common FAQs When Ordering Custom Feed Auger Screws

1. What information do I need to provide for a custom auger screw quotation?

You should provide drawings, specifications (Diameter, Length, Pitch, Thread type), material requirements, surface treatment preferences, and application environment.

2. What is the typical lead time for custom auger screws?

15–20 working days for prototypes or small batches; 20–30 working days for mass production

3. Can you manufacture food-grade or medical-grade auger screws?

Yes, using certified SS304/SS316 materials with polished finishes.

4. What is the maximum length and minimum diameter you can produce?

Up to 1000mm in length and as small as 3mm in diameter.

5. Do you offer surface treatments or coatings?

Yes, including heat treatment, hardening, polishing, electropolishing, passivation, and anti-corrosion coatings.

6. How do you ensure precision and quality control?

Through dimensional inspection, thread testing, straightness verification, and surface checks.

All inspections are conducted according to ISO regulations seriously.

7. What is the minimum order quantity (MOQ)?

Prototype orders accepted; competitive pricing starts at 50 pcs.

8. Can you assist with design optimization?

Yes, our engineering team can suggest improvements for performance or cost-efficiency.

Contact Us for Custom Auger Screw Solutions!

Looking for a reliable partner to manufacture custom CNC machining solid feed auger screws?
At MachiningFabTech, we specialize in CNC machining feed auger screws. Whether you need prototypes or mass production, we deliver precision, quality, and competitive pricing.

Request a Free Quote Today!
Let’s discuss your project requirements and provide you with the best machining solutions.

Email: cindy@machiningfabtech.com
Website: www.machiningfabtech.com
Phone: +86-138-1388-4518