Spline Lug Bolt 12x1.50 Thread 40MM Shank
Fitment and specs
- Thread: 12mm x 1.50
- Overall length 2.73" (69mm), shank length 1.55" (40mm)
- Slim spline drive for tuner wheels with narrow lug holes where a standard hex socket will not fit
- Six spline installation key included
- Available in 16, 20, or 24 piece kits
Thread each bolt in by hand a few turns before reaching for the key, which keeps fresh 12x1.50 threads from cross-threading. Torque to your vehicle's spec using the torque reference chart and re-torque after 50 to 100 miles.
Common questions
How do I know these will seat correctly in my wheels?
Match the seat type first. Conical, mag, and ball seat hardware are not interchangeable, so check what your wheels are drilled for before ordering, then confirm the 40mm shank suits the wheel's mounting pad.
Why spline drive instead of a normal hex head?
The spline head is much narrower than a hex lug bolt, so it drops into the ultra thin, recessed lug openings on tuner style rims. The included six spline key adapts it to a regular socket.