It is based on a US technology and has anti-loosening and anti-vibration property with good repeatability.

DTFlock Self-locking and anti-loosening Nuts.  This product can be used in key thread connections for suspension,brake,transmission,engine systems,etc.So far,SDPF is the only company in China can make this product under US standard.

SDPF doesn't provide fasteners with standard 60 degree thread form. SDPF only makes and

sales DTFlock Nuts (Self-Locking and Anti-Loosening Nuts with 30 degree wedge).    

The advantages of nuts (thread):

1. Reliable anti-vibration & anti-loosening performance

2. Dramatically improved the using life of nuts and bolts

3. Reusable

4. Free suffer from severe change of temperature, with a wide range of applications

5. Rotate type, when to tighten it needs exert torque, convenient to install and discharge

6. Unlimited size

7. Matching with standard outer thread

8. Without any auxiliary lock components, such as spring washers, stop gasket, etc.

9. In addition to nuts, use DTF taps can also made the same anti-loosening VDTF thread,

which can be widely used in the function requirement of self-locking parts

10. To overcome the soft materials (such as aluminum) slide problems successfully

DTFlock Hexagon Collar Nuts