China Key Locking Threaded Inserts - High-Strength Solutions from Leading Suppliers and Factory for Vibration Resistance
All keys are manufactured from the same alloy as the body and heat-treated to ≥ 40 HRC to ensure reliable cold-swaging into the parent material.

Standard Body
303 stainless steel for excellent machinability and corrosion resistance.

High-Corrosion Option
316/316L stainless steel for marine, chemical, and food-grade environments.

High-Temperature Variant
Inconel 718 or A286 for service up to 815 °C (1 500 °F).

Carbon-Steel Version
4140 alloy steel, zinc-nickel plated for cost-sensitive automotive and tooling applications.
Frequently Asked Questions
What material is used for the standard body version?
The standard body is manufactured from 303 stainless steel, which provides excellent machinability and corrosion resistance.
Which option is best for marine and chemical environments?
For marine, chemical, and food-grade environments, the High-Corrosion Option made of 316/316L stainless steel is highly recommended.
What is the maximum temperature limit for the High-Temperature Variant?
The High-Temperature Variant (made of Inconel 718 or A286) is designed for service temperatures up to 815 °C (1 500 °F).
What are the characteristics of the Carbon-Steel Version?
The Carbon-Steel Version is made of 4140 alloy steel and is zinc-nickel plated, making it suitable for cost-sensitive automotive and tooling applications.
How hard are the keys, and why is this important?
All keys are heat-treated to a hardness of ≥ 40 HRC. This ensures reliable cold-swaging of the keys directly into the parent material.
Are the keys and the body made of the same alloy?
Yes, all keys are manufactured from the same alloy as the body to maintain material consistency and optimal performance.


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