Truck Bolt DXTB189 For Center Bolt

Bolt head:
Usually, internal hexagonal or spline designs are used, which can provide great torque and prevent slipping during the fastening process.
The connection between the head and the screw has a clear circular arc transition, which can effectively reduce stress concentration, improve the fatigue strength of the bolt, and make it more durable in vehicle bumps and vibrations.
Screw rod part:
This part has a smooth surface and a golden color, indicating that it is likely to have undergone surface treatment such as Dacromet or galvanizing. This treatment can provide excellent rust and corrosion resistance to cope with harsh environments such as rainwater and snow melting agents encountered during vehicle operation.
Threads and nuts:
Precision threading, compatible with white nylon nuts. This white nut is a nylon anti loosening nut, whose core function is to prevent loosening.
The nylon part has elasticity. When the nut is tightened, the nylon ring will generate huge friction with the thread, effectively preventing the bolt from loosening under long-term vibration of the vehicle and ensuring driving safety.

Factory Pictures:

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