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Prevailing Torque Type Hex Flange Nuts are designed for applications where a secure, vibration-resistant fastening is required. These nuts are manufactured according to ANSI standards IFI-100/107-2002 and are available in both inch and metric sizes. The standard inch sizes range from 1/4-20 up to 3/4 inch UNC/UNF, while the metric versions follow DIN 6927, ranging from M6 to M24, with both standard and fine thread options.
They come in different grades such as Grade 8 and Grade 10 (equivalent to IFI Grades G and F), ensuring durability and strength for various industrial uses. The nuts are available in multiple finishes including plain, cadmium & waxed, and yellow zinc coatings, providing corrosion resistance and aesthetic appeal.
Some common specifications include:
- **Model No.:** Prevailing Torque
- **Head Style:** Hexagonal
- **Connection:** Common Bolt
- **Grade:** 6.8 (for metric) or 8/10 (for inch)
- **Trademark:** TS
- **Specification:** DIN / ANSI / JIS / GB
- **Origin:** China
- **HS Code:** 731816
Here are some typical product listings:
| Part Number | Standard | Price (USD) |
|--------------------------------------|----------------------|-------------|
| 7/16-20 TOP LOCK NUT GR C PLAIN | PER IFI STANDARDS | 13.1 |
| 1/2-13 TOP LOCK NUT GR C PLAIN | PER IFI STANDARDS | 17.6 |
| 5/8-11 TOP LOCK NUT GR C PLAIN | PER IFI STANDARDS | 36.7 |
| 5/8-18 TOP LOCK NUT GR C PLAIN | PER IFI STANDARDS | 36.7 |
| 3/4-10 TOP LOCK NUT GR C PLAIN | PER IFI STANDARDS | 62 |
| 3/8-16 TOP LOCK NUT GR A REGULAR FLANGE YELLOW ZINC | PER IFI STANDARDS | 2.82 |
| 3/8-16 TOP LOCK NUT GR A LARGE FLANGE YELLOW ZINC | PER IFI STANDARDS | 2.82 |
| 3/8-16 GRADE G FLANGE LOCK NUT YELLOW ZINC | PER IFI STANDARDS | 2.39 |
For more information on prevailing torque type hex nuts, hex flange nuts, or other related standards, visit us online at [www.hexnuts.cn](http://www.hexnuts.cn). You can also view our full product catalog and high-quality images of our products, including the steel hex flange nut shown below.
Whether you're looking for heavy-duty locking nuts or precision-engineered fasteners, we have a wide range of options to suit your needs. Our products are widely used in automotive, aerospace, construction, and industrial manufacturing sectors. Contact us today to get a quote or learn more about our quality products.
August 02, 2025