Self-Tapping Threaded Inserts | Durable Solutions from China Suppliers and Factory for Metal and Composite Materials

303 Stainless Steel
Excellent corrosion resistance and machinability for general-purpose use.

316/316L Stainless Steel
Superior pitting and chloride resistance for marine, chemical, and food-processing environments.

4140 Alloy Steel, Zinc-Nickel Plated
High tensile strength and cost-effective for automotive and tooling applications.

Brass C36000
Non-sparking and non-magnetic, ideal for electrical housings and precision instruments.
All materials are heat-treated to 40–48 HRC on the external cutting zone, while the internal threads remain at 28–32 HRC to prevent galling.
Frequently Asked Questions
What are the key benefits of using 303 Stainless Steel?
303 Stainless Steel provides excellent corrosion resistance and superior machinability, making it the ideal choice for general-purpose applications requiring precise machining.
When should 316/316L Stainless Steel be selected over 303?
Choose 316/316L Stainless Steel for environments demanding high resistance to pitting and chlorides, such as marine, chemical processing, and food-processing industries.
What makes 4140 Alloy Steel suitable for automotive tooling?
4140 Alloy Steel is zinc-nickel plated to offer high tensile strength and cost-effectiveness, making it highly suitable for heavy-duty automotive and tooling applications.
Why is Brass C36000 ideal for electrical housings?
Brass C36000 is inherently non-sparking and non-magnetic, which ensures safety and prevents interference in electrical housings and precision instruments.
How does the dual-zone heat treatment prevent thread galling?
By heat-treating the external cutting zone to 40–48 HRC for wear resistance while maintaining the internal threads at a softer 28–32 HRC, the material effectively prevents galling during installation.


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