Door Lock Square Spindle Manufacturer | CNC Turning Steel Parts from China
Located in Zhongkai High-Tech Zone, Huizhou, China, we are a CNC turning manufacturer with our own factory, specializing in precision hardware components.
With years of experience in automatic lathe machining, we focus on producing high-quality door lock square spindles using premium 1215 free-cutting steel.
Our products offer:
• High rigidity
• Excellent wear resistance
• Long-term dimensional stability
To date, we have supplied over 1 million pieces, supporting reliable operation in countless households worldwide.
We are committed to delivering stable and high-quality CNC turning steel parts for global customers.
Product Advantages
Premium Material
Made from 1215 free-cutting steel, ensuring excellent machinability and smooth surface finish.
High Strength & Stability
Optimized heat treatment improves rigidity and prevents deformation during long-term use.
Precision Tolerances
Manufactured by automatic lathes with outer diameter tolerance controlled within ±0.02 mm, ensuring perfect fit with lock mechanisms.
Wide Range of Specifications
Square sizes from 5 mm to 9 mm, with over 80 standard length options available.
Custom Manufacturing
Supports drawing-based customization for any length or special requirements.
Long Service Life
High rigidity design reduces wear and extends product lifespan.
Applications
Door lock internal mechanisms
Door and window hardware fittings
Furniture locks and drawer locks
Industrial locks and electrical cabinet locks
Other mechanical components requiring square drive transmission
Surface Treatment Options
To ensure durability in different environments:
• Zinc Plating: Standard protection, up to 96 hours neutral salt spray resistance
• Zinc-Nickel Alloy Coating: Suitable for outdoor or coastal environments, up to 800 hours salt spray resistance
Additional treatments available upon request:
• Heat treatment
• Carburizing/nitriding
• Oxidation
• Nickel plating
• QPQ
• Passivation
• Electroplating
• PVD coating
Why Choose Us?
• Own Factory: No intermediaries, more competitive pricing and better lead time control.
• Rich Experience: Years of expertise in machining CNC turning steel parts, ensuring stable quality.
• Strict Quality Control: 100% inspection before shipment, burr-free and dimensionally consistent.
• Fast Delivery:
☉ Samples: 7–10 days
☉ Mass production: 7–15 days
• Flexible Production: Supports both small-batch prototyping and large-scale production.
FAQ
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