Wheel Adapter Studs 9/16" for 8 Lug
Wheel adapter studs 9/16"-18 thread size with 2.6" overall length (L1). Knurl diameter (D1) is 0.6". Compatible with some of our 8 lug wheel adapters that come in 9/16" thread size studs (except for 8650-8650D in 1.5" and 2" thickness). They are not compatible with our 2-piece conversion adapter studs.

Fitment and specs
- Thread size: 9/16"-18
- Overall length (L1): 2.6"
- Knurl diameter (D1): 0.6"
- Fits select 8 lug wheel adapters built with 9/16" thread studs
- Not for 8650-8650D adapters in 1.5" and 2" thickness, and not compatible with 2-piece conversion adapters
Before ordering, compare your current stud against all three measurements: thread, overall length, and knurl diameter. Once the studs are in and the wheels are mounted, tighten the lug nuts to the value shown in our torque reference chart, then re-torque after 50 to 100 miles of driving.
Common questions
Will these fit my 8 lug wheel adapter?
They fit some of our 8 lug adapters that use 9/16"-18 studs. The exceptions are the 8650-8650D adapters in 1.5" and 2" thickness, and they are not compatible with our 2-piece conversion adapters, so check your adapter model before ordering.
How do I confirm the size is right?
Measure the stud you are replacing. You want a 9/16"-18 thread, 2.6" overall length, and a 0.6" knurl. If any of those differ, the stud will not seat correctly in the adapter.