What size socket is the MDX lug nut?
The typical socket size for MDX lug nuts is 19 mm (3/4 inch). This applies to most Acura MDX models with standard wheel setups, though exceptions can exist depending on year, trim, or aftermarket wheels.
Lug nut sizing can vary by generation and wheel options, so it’s important to confirm for your exact vehicle. If in doubt, consult the owner's manual, inspect the lug nuts on your wheels, or ask a dealership or tire shop for guidance before attempting a tire change.
Common socket size and lug specs
Below is a concise overview of the gear you’ll typically encounter on MDX models when removing or torquing lug nuts.
- Socket size for standard lug nuts: 19 mm (3/4 inch) hex.
- Lug stud thread: typically 12x1.5 in many MDX configurations.
- Lug nut seat: commonly conical (tapered) seat to fit OEM wheels.
- Locking lug nuts: require the included key rather than a standard socket; size varies by design.
- Aftermarket wheels: may use different seat types or sizes; verify with the wheel maker or a shop.
For everyday maintenance, a 19 mm socket will cover the majority of MDX lug nut scenarios, but always confirm for your specific model year and wheel choice to avoid damage.
How to confirm your exact size
If you’re unsure or working with non-OEM wheels, use these verification tips before torquing wheels back on.
- Check the owner’s manual or a service manual specific to your MDX year and trim.
- Inspect the lug nut flats directly; 19 mm across flats is common for many Honda/Acura setups.
- Ask a dealer, tire shop, or the wheel manufacturer if you have aftermarket parts.
Using the correct socket size protects the lug nuts and studs from rounding or damage and ensures proper torque application.
Summary
In most Acura MDX models, the lug nuts are designed to be removed with a 19 mm (3/4 inch) socket, given a 12x1.5 thread and standard conical seat. However, variations can exist by year, trim, or aftermarket wheels. Always verify with the vehicle’s documentation or a professional before performing wheel work.
Is a 13/16 socket the same as 21mm?
No, a 13/16 inch socket is not exactly the same as a 21mm socket, but they are very close and often considered interchangeable, as 13/16 inch is approximately $20.65$mm. Because of the small difference, one size may fit a nut or bolt more snugly than the other depending on manufacturing tolerances. The 13/16" socket often provides a tighter fit on many $21$mm lug nuts.
- 13/16" conversion: 13/1613 / 1613/16 inch is equal to approximately 20.6520.6520.65 mm.
- 21mm conversion: 212121 mm is equal to approximately 13/1613 / 1613/16 inch, or 0.8270.8270.827 inches.
- Practical application: While they are theoretically different, many tools and parts manufacturers list them as equivalent, making them effectively interchangeable in practice.
- Best fit: If you have both a 13/16" and a 21mm socket, it is best to try both to see which one fits the fastener most securely without being too loose or too tight. A tighter fit is generally preferred to avoid rounding the fastener head.
Is 7/8 socket the same as 22mm?
No, a 7/8 socket is not exactly the same as a 22mm socket, but they are often used interchangeably because the difference is very small. A 7/8 inch socket is equal to 0.8750.8750.875 inches, while a 22mm socket is equal to approximately 0.8660.8660.866 inches, making the 7/8 socket slightly larger. Using a 7/8 socket on a 22mm fastener may feel a bit loose, and a 22mm socket on a 7/8 fastener may be a bit snug.
Size comparison
- 7/8 inch socket: 0.8750.8750.875 inches
- 22mm socket: 0.8660.8660.866 inches
Interchangeability and potential issues
- Using a 7/8" socket on a 22mm fastener: This may feel slightly loose because the socket is larger than the fastener.
- Using a 22mm socket on a 7/8" fastener: This may be a snug fit, which is generally better than a loose fit, but could be difficult to use.
- Recommendation: For the most precise fit, it's best to use the correct tool for the job. If you have a 22mm fastener, use a 22mm socket. If you have a 7/8 inch fastener, use a 7/8 inch socket.
When to be cautious
- Corroded or worn fasteners: If a fastener is corroded or the chrome cap has swelled, either socket may fit poorly.
- Torque: For high-torque applications, using the correct size socket is important to prevent damage to the tool or the fastener.
What size are the lug nuts on a Acura MDX?
The Acura MDX lug nut size depends on the model year, with most newer models (2007-2024) using M14x1.5mm and older models (2001-2016) often using M12x1.5mm. Always check your owner's manual or a vehicle-specific parts catalog to ensure you get the correct size for your exact year.
| Model Year Range | Lug Nut Size |
|---|---|
| 2001–2016 (some) | M12x1.5mm |
| 2007–2024 | M14x1.5mm |
(this||self).Wufxzb=function(c,e,f,l,k){var d=document.getElementById(c);if(d&&(d.offsetWidth!==0||d.offsetHeight!==0)){c=d.querySelector("div");var g=c.scrollWidth-c.offsetWidth,h=Math.min(e?g:0,g);c.scrollLeft=e&&(l||f)?0:h;var a=d.getElementsByTagName("g-left-button")[0],b=d.getElementsByTagName("g-right-button")[0];a&&b&&(e=RegExp("\\btHT0l\\b"),f=RegExp("\\bpQXcHc\\b"),a.className=a.className.replace(e,""),b.className=b.className.replace(e,""),h===0?a.className="pQXcHc "+a.className:(a.className=
a.className.replace(f,""),k&&c.classList.add("pA30Ne")),h===g?b.className="pQXcHc "+b.className:(b.className=b.className.replace(f,""),k&&c.classList.add("FpCCub")),setTimeout(function(){a.className+=" tHT0l";b.className+=" tHT0l"},50))}};}).call(this);(function(){var id='_C9IladiKHLC4i-gP-YLR8AQ_114';var rtl=false;var gecko=false;var edge=false;var soh=false;
(this||self).Wufxzb(id,rtl,gecko,edge,soh);})();
What size socket is a 2016 Acura MDX lug nut?
12 mm x 1.50 thread size, 3/4" hex.
