9/16"-18 Lug Nuts

9/16"-18 Lug Nuts

All of our 9/16"-18 lug nuts: 9/16 inch thread diameter with 18 threads per inch, including dualie nuts with washers for dually wheels. Stocked in acorn, bulge acorn, spline, spike and mag styles.

This size is commonly found on older Dodge Ram heavy-duty trucks, Ford F-250 and F-350 pickups from roughly 1988 to 1998 (before the Super Duty era) and many trailer axles, especially dually applications. Always verify your thread size before ordering. If you are not certain of your size, our wheel fitment guide explains how to identify thread sizes step by step.

Common questions

What does 9/16"-18 mean? The stud is 9/16 inch in diameter with 18 threads per inch.

What is a dualie lug nut? A nut with a built-in or separate washer that clamps dual rear wheels evenly. If your truck runs duals, use dualie-style nuts where the wheel design calls for them.

How tight should 9/16" nuts be? Heavy-duty applications often call for 120 lb-ft or more; check your manual and our torque chart.

Related: 14x2.0 lug nuts, 1/2"-20 lug nuts left hand thread lug nuts and all wheel lug nuts. Recommended torque for each size is listed on our torque reference chart.