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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.

9/16"-18 lug nut common questions

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.

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Black OEM Ford 9/16" Lug Nuts

$2.49 - $2.49
$2.49
$2.49
$2.49 - $2.49
$2.49
In stock

Thread size 9/16" Style / seat OEM Hex size 13/16" EZAccessory's special Ford OEM style 9/16" lug nuts with built-in washers are designed ...

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$2.49 - $2.49
$2.49
$2.49
$2.49 - $2.49
$2.49
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Open End Bulge Acorn Lug Nut 9/16"-18

$1.19
$1.19 - $1.19
$1.19
$0.89
$0.89 - $0.89
$0.89

Thread size 9/16"-18 Sold as Each (single piece) Open-end bulge acorn style 9/16"-18 threads nickel plated lug nuts. Please refer to the foll...

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$1.19
$1.19 - $1.19
$1.19
$0.89
$0.89 - $0.89
$0.89
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GM 9/16" External Thread Lug Nut

$2.19
$2.19 - $2.19
$2.19
$1.69
$1.69 - $1.69
$1.69

Thread size 9/16" Style / seat OEM Special GM OEM style 9/16" lug nuts with external threads. These lug nuts allow newer 90-99 Chevy/GMC whee...

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$2.19
$2.19 - $2.19
$2.19
$1.69
$1.69 - $1.69
$1.69
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Dualie Mag Lug Nuts 9/16" with Washer 0.57" Shank

$3.99
$3.99 - $3.99
$3.99
$3.29
$3.29 - $3.29
$3.29
In stock

Thread size 9/16" Style / seat Dualie Mag Sold as Each (single piece) Dualie Mag 9/16" with Washer 0.57" Shank lug nut. 1" hex. 2.02" in h...

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$3.99
$3.99 - $3.99
$3.99
$3.29
$3.29 - $3.29
$3.29
Save $0.70 Save $0.00
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Dome XL Duplex Mag Style Mag Lug Nut 9/16"

$2.79
$2.79 - $2.79
$2.79
$2.49
$2.49 - $2.49
$2.49

Thread size 9/16" Style / seat Duplex Mag Overall length 2.36" 9/16" Dome XL Duplex style mag lug nuts with washers. The shank length is 1"...

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$2.79
$2.79 - $2.79
$2.79
$2.49
$2.49 - $2.49
$2.49
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Dome Duplex Mag Style Lug Nut 9/16"

$2.49 - $2.49
$2.49
$2.49
$2.49 - $2.49
$2.49

Thread size 9/16" Style / seat Duplex Mag Overall length 1.85" 9/16" Dome Duplex style mag lug nuts with washers. The shank length is 1" an...

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$2.49 - $2.49
$2.49
$2.49
$2.49 - $2.49
$2.49
Save $0.24 Save $0.00

Open End Acorn Lug Nut 9/16" Short Hex 13/16"

$1.09
$1.09 - $1.09
$1.09
$0.85
$0.85 - $0.85
$0.85

Thread size 9/16" Style / seat Open End Acorn Hex size 13/16" Sold as Each (single piece) Open-end short acorn style 9/16" threads nickel...

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$1.09
$1.09 - $1.09
$1.09
$0.85
$0.85 - $0.85
$0.85
Save $0.24 Save $0.00
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Long ET Conical Bulge Lug Nuts 9/16" Thread

$2.99
$2.99 - $2.99
$2.99
$1.89
$1.89 - $1.89
$1.89

Thread size 9/16" Style / seat ET Hex size 13/16" Overall length 1.75" 9/16" ET conical bulge long style lug nuts. They fit old style E-T...

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$2.99
$2.99 - $2.99
$2.99
$1.89
$1.89 - $1.89
$1.89
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Extra Long Bulge Acorn 9/16" Lug Nuts 3/4" Hex 2.2" Long

$1.99
$1.99 - $1.99
$1.99
$1.49
$1.49 - $1.49
$1.49

Thread size 9/16"x18 Style / seat Bulge Acorn Hex size 3/4" Overall length 2.2" Sold as Each (single piece) Long acorn bulge style 9/16...

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$1.99
$1.99 - $1.99
$1.99
$1.49
$1.49 - $1.49
$1.49
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Spike Lug Nuts 32 Pc Installation Kit 9/16" Chrome

$69.90
$69.90 - $69.90
$69.90
$59.90
$59.90 - $59.90
$59.90

Thread size 9/16" Style / seat Spike Sold as Set of 32 Spiked lug nuts installation kit for 8 lug pickups with 9/16" studs. This complete i...

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$69.90
$69.90 - $69.90
$69.90
$59.90
$59.90 - $59.90
$59.90
Save $10.00 Save $0.00
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Dualie Mag Lug Nuts 9/16" with Washer 0.80" Shank

$3.99
$3.99 - $3.99
$3.99
$2.89
$2.89 - $2.89
$2.89

Thread size 9/16" Style / seat Dualie Mag Sold as Each (single piece) Dualie mag 9/16" lug nut with washer. Shank diameter 0.80". Shank len...

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$3.99
$3.99 - $3.99
$3.99
$2.89
$2.89 - $2.89
$2.89
Save $1.10 Save $0.00
Sold out

Spike Lug Nuts 32 Pc Installation Kit 9/16" Black

$69.90
$69.90 - $69.90
$69.90
$59.90
$59.90 - $59.90
$59.90
Out of stock

Thread size 9/16" Style / seat Spike Sold as Set of 32 Spiked lug nuts installation kit for 8 lug pickups with 9/16" studs. This complete i...

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$69.90
$69.90 - $69.90
$69.90
$59.90
$59.90 - $59.90
$59.90
Sold out
Save $20.00 Save $0.00

Spline Spike Lug Nuts 32 Pc Kit 9/16" Chrome

$109.90
$109.90 - $109.90
$109.90
$89.90
$89.90 - $89.90
$89.90

Thread size 9/16" Style / seat Spike Overall length 112mm Sold as Set of 32 Spline spiked lug nuts installation kit for 9/16" studs. This...

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$109.90
$109.90 - $109.90
$109.90
$89.90
$89.90 - $89.90
$89.90
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Long Bulge Acorn 9/16" Lug Nuts - Through Hardened

$1.59
$1.59 - $1.59
$1.59
$1.39
$1.39 - $1.39
$1.39

Thread size 9/16"-18 Style / seat Bulge Acorn Sold as Each (single piece) Through hardened long acorn bulge style 9/16"-18 threads nice chr...

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$1.59
$1.59 - $1.59
$1.59
$1.39
$1.39 - $1.39
$1.39
Save $0.20 Save $0.00
Save $0.40 Save $0.00

Duplex Acorn Lug Nuts 9/16" Thread

$1.99
$1.99 - $1.99
$1.99
$1.59
$1.59 - $1.59
$1.59

Thread size 9/16"-18 Style / seat Duplex Acorn Hex size 7/8" Sold as Each (single piece) Duplex acorn style 9/16"-18 threads lug nut. 7/...

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$1.99
$1.99 - $1.99
$1.99
$1.59
$1.59 - $1.59
$1.59
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Long Bulge Acorn Lug Nut 9/16" Black 1.75"

$1.99
$1.99 - $1.99
$1.99
$1.49
$1.49 - $1.49
$1.49

Thread size 9/16"-18 Style / seat Bulge Acorn Hex size 3/4" Overall length 1.75" Sold as Each (single piece) Bulge acorn style 9/16"-18...

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$1.99
$1.99 - $1.99
$1.99
$1.49
$1.49 - $1.49
$1.49
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Duplex XL Acorn Lug Nuts 9/16" Thread

$2.99
$2.99 - $2.99
$2.99
$1.99
$1.99 - $1.99
$1.99

Thread size 9/16"-18 Style / seat Duplex Acorn Hex size 7/8" Overall length 2.50" Sold as Each (single piece) Duplex acorn style 9/16"-...

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$2.99
$2.99 - $2.99
$2.99
$1.99
$1.99 - $1.99
$1.99
Save $1.00 Save $0.00
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Duplex Spline Drive Lug Nuts 9/16" Black

$59.99 - $74.99
$59.99 - $74.99
$59.99
$39.99 - $54.99
$39.99 - $54.99
$39.99

Thread size 9/16" Style / seat Duplex Spline Hex size 13/16" Sold as Set options: 20 / 24 / 32 pieces This set includes 20 ,24 or 32 piec...

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$59.99 - $74.99
$59.99 - $74.99
$59.99
$39.99 - $54.99
$39.99 - $54.99
$39.99
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Duplex XXL Acorn Lug Nuts 9/16" Thread

$2.99
$2.99 - $2.99
$2.99
$2.49
$2.49 - $2.49
$2.49

Thread size 9/16"-18 Hex size 7/8" Sold as Each (single piece) Duplex XXL acorn style 9/16"-18 threads lug nut. 7/8" hex. 2.75" in height. ...

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$2.99
$2.99 - $2.99
$2.99
$2.49
$2.49 - $2.49
$2.49
Save $0.50 Save $0.00
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Dualie Acorn Lug Nuts 9/16" with Washer

$4.69
$4.69 - $4.69
$4.69
$3.89
$3.89 - $3.89
$3.89
In stock

Thread size 9/16" Style / seat Dualie Acorn Sold as Each (single piece) Dualie acorn style 9/16" threads lug nut with attached washer. 1" ...

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$4.69
$4.69 - $4.69
$4.69
$3.89
$3.89 - $3.89
$3.89
Save $0.80 Save $0.00
Save $1.70 Save $0.00

Short Dualie Acorn Lug Nuts 9/16" Thread

$3.99
$3.99 - $3.99
$3.99
$2.29
$2.29 - $2.29
$2.29
In stock

Thread size 9/16" Style / seat Dualie Acorn Overall length 1.65" Sold as Each (single piece) Short Dualie acorn style 9/16" threads lug n...

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$3.99
$3.99 - $3.99
$3.99
$2.29
$2.29 - $2.29
$2.29
Save $1.70 Save $0.00
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Dualie Acorn Lug Nuts 9/16" Thread

$2.99
$2.99 - $2.99
$2.99
$2.49
$2.49 - $2.49
$2.49

Thread size 9/16" Style / seat Dualie Acorn Sold as Each (single piece) Dualie acorn style 9/16" threads lug nut. 1" hex. 2.10" in height....

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$2.99
$2.99 - $2.99
$2.99
$2.49
$2.49 - $2.49
$2.49
Save $0.50 Save $0.00
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Duplex Spline Drive Lug Nuts 9/16" Chrome

$49.99 - $64.99
$49.99 - $64.99
$49.99
$36.99 - $49.99
$36.99 - $49.99
$36.99

Thread size 9/16" Style / seat Duplex Spline Sold as Set options: 20 / 24 / 32 pieces This set includes 20, 24 or 32 piece set of 9/16"-18 ...

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$49.99 - $64.99
$49.99 - $64.99
$49.99
$36.99 - $49.99
$36.99 - $49.99
$36.99
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Chrome 9/16" Duplex Bulge Acorn Lug Nut 7/8" Hex Dodge Durango

$3.99
$3.99 - $3.99
$3.99
$2.69
$2.69 - $2.69
$2.69

Thread size 9/16"-18 Hex size 7/8" Special bulge acorn lug nut 9/16"-18 with 7/8" hex. Can be used as replacement lug nuts for Dodge Durango...

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$3.99
$3.99 - $3.99
$3.99
$2.69
$2.69 - $2.69
$2.69
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