The factory lug nuts on a 2006 Nissan Altima are M12 x 1.25 with a 19 mm hex, using a 60-degree conical (acorn) seat on a 5x114.3 bolt pattern. Five lug nuts secure each wheel.
In detail, the Altima’s original wheels use a five-lug arrangement and metric lug hardware sized to fit the hub and wheel assembly. This configuration is typical for the 2006 Altima’s stock wheels, though aftermarket wheels can require different sizes or seat types. Always verify if you’re working with non-OEM wheels or accessories.
Factory lug nut specifications
The following items summarize the official specs for the factory lug nuts used on the Altima's wheels.
Bolt pattern
5x114.3 mm (5 on 4.5 inches)
Thread size
M12 x 1.25
Seat type
60-degree conical (acorn) seat
Hex size
19 mm across flats (approximately 3/4 inch)
Number of lug nuts per wheel
5
These specifications apply to the factory wheels installed on the 2006 Altima. If you’re using aftermarket wheels, verify compatibility with the wheel manufacturer and hub.
How to verify the lug nut size on your Altima
To confirm the exact lug nut size on your car, follow these steps.
Check official documentation
Consult the owner's manual or service manual for the recommended lug nut size and thread pitch for your trim and wheel type.
Inspect the existing lug nuts
Look for stamped size information or part numbers on the lug nuts themselves—some OEM nuts include markings indicating thread size or seat type.
Measure if needed
Use a caliper to measure thread diameter and a thread pitch gauge to confirm pitch; measure the nut’s hex size to verify it’s 19 mm if using OEM hardware.
Consider aftermarket wheels
If you have aftermarket wheels, they may require different lug nut specs. Always refer to the wheel manufacturer’s instructions and ensure the seat type, thread size, and bore match your hub.
If in doubt, contact a Nissan dealer or a professional tire shop to confirm correct lug nut specifications before purchasing or installing hardware.
Summary
Bottom line: For a 2006 Nissan Altima with factory wheels, use lug nuts sized M12 x 1.25 with a 60-degree conical seat and a 19 mm hex, installed on a 5x114.3 bolt pattern (five lugs per wheel). If you’re using aftermarket wheels, verify the exact lug nut size and seat type with the wheel manufacturer or a trusted technician.