The Dayton 13-3131L is a heavy-duty metric wheel lug nut engineered to provide a precise fit and reliable clamping force for specified commercial vehicles. Finished in a corrosion-resistant yellow zinc chromate, this open-end hex nut is built from high-strength carbon steel to withstand the extreme torque and environmental stresses of medium and heavy-duty trucking.
Direct Replacement: Designed to match the fit, function, and performance of original equipment hardware on specified Isuzu, Hino, and PACCAR vehicles.
Metric Engineering: Precision-machined with M30-1.50 threads for a perfect fit on metric hub assemblies.
Left-Hand Thread: Specifically designed for counterclockwise installation, typically used on the left side of certain vehicle configurations to prevent loosening during forward motion.
Durable Construction: Manufactured from carbon steel to strict specifications for a long service life and resistance to thread stripping.
Corrosion Resistant: Yellow zinc chromate finish provides superior protection against road salt, moisture, and debris.
| Specification | Details |
| Part Number | 13-3131L |
| Thread Size | M30 x 1.50 (Fine) |
| Thread Direction | Counterclockwise (Left-Hand) |
| Hex Size | 41 mm |
| Seat Style | Conical |
| Design | Open End |
| Overall Length | 26 mm |
| Material | Carbon Steel |
| Color/Finish | Zinc Yellow Chromate |
| Weight | 0.30 lbs |
This wheel lug nut is a direct interchange for the following industry part numbers:
Isuzu: 1423340230
Hino: 900422104
PACCAR: W723
VMRS Code: 018-003-027
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