China Three-Holes Self-Tapping Threaded Inserts - High-Strength Fasteners from Top Suppliers & Factory
Carbon steel (1215)
Surface color zinc plating, suitable for low-strength materials such as aluminum alloy, copper alloy, and plastic;
Stainless steel (SUS303, 304, 316)
Corrosion-resistant and high-temperature resistant, suitable for environments such as ships, medical equipment, and food equipment.
Frequently Asked Questions
Q: What are the primary applications for Carbon Steel (1215) inserts?
Carbon steel (1215) features surface color zinc plating and is highly suitable for low-strength base materials, including aluminum alloys, copper alloys, and various plastics.
Q: Why should I choose Stainless Steel (SUS303, 304, 316) over carbon steel?
Stainless steel variants offer excellent corrosion resistance and high-temperature tolerance. They are specifically recommended for demanding environments such as marine vessels, medical instruments, and food processing equipment.
Q: What is the purpose of the zinc plating on the Carbon Steel 1215?
The surface color zinc plating provides basic corrosion resistance, improves surface durability, and gives the carbon steel component a clean finish.
Q: Which stainless steel grade is best suited for highly corrosive marine environments?
While SUS303 and SUS304 offer standard corrosion resistance, SUS316 contains molybdenum, which provides superior resistance to chlorides and harsh marine conditions.
Q: Are these materials compatible with medical and food processing equipment?
Yes, stainless steel grades (such as SUS304 and SUS316) are highly recommended for medical and food-grade applications due to their non-reactive properties and ease of sanitization.


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