Hardlock Nut is composed of two upper and lower type self-tightening nuts, the upper nut has a bevel and the lower nut has a groove. When the two nuts are locked, the bevel and groove bite each other to form a conical structure.

Advantages of Hadlock Nuts OEM-Manufactured by Tianlong  

1. Excellent anti-loosening performance of Hadlock nuts wholesaled by Tianlong  

Hadlock nuts wholesaled by Tianlong adopt a unique two-piece self-tightening design, specifically the "upper nut with a bevel + lower nut with a groove" structure.

This structural advantage lies in that when locked, the bevel and groove bite each other to form a relatively stable conical structure, which is an ingenious design. Thanks to this design, the nuts possess extremely strong anti-loosening performance even during high-speed operation and severe vibration.  

According to statistics, Hadlock nuts, as an important component of Japan's Shinkansen technology, have been widely used in China's high-speed rail tracks.

It is reported that approximately 50 million Hadlock nuts are used on China's high-speed rail tracks, accounting for 42% of the global market, which indicates that their performance has gained international recognition.  

2. Premium and durable top-grade materials for Tianlong Hadlock nuts  

Tianlong Hadlock nuts are made of high-quality S45C and 40Cr materials, which are excellent choices for high-strength materials. Both of these alloy steels have outstanding toughness and wear resistance.  

Material Performance Comparison Table

3. A variety of specifications available  

As a leading fastener manufacturer and supplier in China, the Hadlock nuts wholesaled by Tianlong come with multiple thread size options, ranging from M8 to M48.

In addition, their surface finishes offer two options: black and galvanized. You can purchase according to the construction conditions. Alternatively, you can contact us for custom services to perfectly meet the needs of your business scenarios.  

4. Ideal for industries with strict requirements on fastening performance  

Tianlong Hadlock nuts feature stable product quality and are highly recognized by enterprises in the global rail transit, heavy machinery, and automotive industries.