🛠️ Plating and Heat Treatment Optimized for Screw Sizes
In our previous post, we introduced miniature screws such as #0 size.
To manufacture such small screws, dedicated plating and heat treatment lines are essential.
Attempting to plate or heat treat small screws like M3 on production lines primarily designed for larger screws (e.g., M20 or above) will not yield optimal results.
While some countries may process a wide range of screw sizes (e.g., M2 to M24) on a single line, this approach is not ideal, especially when high precision and quality are required.
📏 Challenges with Long Screws (e.g., M3×100)
When plating or heat treating long screws, bending of the threaded section can occur due to thermal stress or handling.
Fortunately, in Japan, specialized plating and heat treatment factories are equipped to handle such long components properly.
Additionally, producing long screws requires:
- Dedicated header and rolling machines
- Specialized tools and die makers
These are essential to maintain straightness, thread integrity, and product reliability.
🏭 SAIMA Group’s Production Capabilities
SAIMA Group owns production lines capable of manufacturing screws from M1 to M12.
For larger sizes, we collaborate with trusted domestic and international partner factories who are well-versed in Japanese manufacturing standards.
We can accommodate:
- Small-lot production (under 30,000 pcs)
- Stainless steel (A2, A4)
- Titanium
- Aluminum
- High-strength screws (Alloy Steel, Stainless Steel)
🇯🇵 Why Choose Japanese Screws?
Japan’s screw industry once thrived on export during its golden era.
Today, although price-competitive mass production is available in regions like China, Japan still excels in:
- Small-lot production
- Short lead times
- Reliable quality
If your project demands quick turnaround and precision even in small volumes, we encourage you to try Japanese screws.
✅ Conclusion
The right plating and heat treatment processes vary greatly depending on the screw size and length.
Partnering with a manufacturer who understands the complexity of precision fastener production ensures product quality and reliability.
Don’t just choose the right screw — choose the right manufacturing process behind it.y to support your needs with Japan’s specialized miniature screw manufacturing capability.
【Writer】Tak Saima/CEO, Technical Sales