wheel stud 1/2-20 x 1.8 long

A 1/2-20 × 1.8" wheel stud is a threaded fastener used to secure a vehicle’s wheel to the hub. Here’s what each part of that description means and what it does:

Size & specifications

• 1/2 inch diameter: The stud’s shaft is 0.5 inches thick.
• 20 threads per inch (1/2-20): This is a fine thread pitch, meaning the threads are closely spaced, which allows for tighter clamping force and better resistance to loosening.
• 1.8 inches long: The overall usable length of the stud from base to tip.

Function

• The wheel stud is pressed or threaded into the wheel hub.
• The wheel is placed over the studs, and lug nuts are tightened onto them.
• When tightened, the stud and lug nut create a strong clamping force that holds the wheel firmly against the hub.
• This connection keeps the wheel aligned, prevents wobbling, and ensures safe transfer of driving forces (acceleration, braking, and cornering).