M12 Wheel Stud (1.5 TPI)
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$2.50 Inc.GST
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M12 Wheel Stud (1.5 TPI) – 40mm
Summary: High-tensile 40mm replacement wheel stud with a 1.5 TPI thread, engineered for heavy-duty caravan and trailer applications. Heavy road vibrations require reliable equipment; these studs provide maximum shear resistance on corrugated outback roads.
Product Description
Key Features & Specifications
- Thread Pitch: M12 with 1.5 TPI
- Total Length: 41mm
- Knurl Diameter: 13.89mm
- Hole Size Required: 13.5mm
- Knurl Length: 9mm
- Head Diameter: 17.76mm
- Head Thickness: 4mm
- Material: High-tensile steel
Product Links & Resources
- Download Caravan Wheel Stud Selection Sheet
- 7/16-inch Wheel Stud (490200)
- AL-KO 1/2-inch Wheel Stud (490300)
- AL-KO 1/2-inch Short Industrial Wheel Stud (490301)
- 1/2-inch Long Industrial Wheel Stud (490302)
- 1/2-inch Dexter Long Wheel Stud (490308)
- M12 Wheel Stud (1.5 TPI) (490300-12)
- 9/16-inch Wheel Stud (490402)
- M14 Wheel Stud (490340)
Can’t find your exact part? Contact our experts on 07 3348 3822 to source your required custom part, unbraked hubs, or 10-inch drums.
Frequently Asked Questions
How do wheel studs become loose?
Manufacturing faults are rare. Loose studs usually occur when one wheel nut is incorrectly torqued, causing the remaining nuts to loosen sequentially. Regular morning checks during long trips are essential to combat vibrations from corrugated roads.
Is wheel stud shearing common?
Yes, worn and sheared wheel studs occur more frequently on caravans than on standard trailers. High-tensile studs are designed to shear under extreme stress before the nut strips its thread, protecting the wheel assembly from more severe structural damage.
Can I replace a single loose stud?
You can replace a sheared stud if the hub hole remains undamaged. However, if the stud spins or has a loose fit within the hub or drum, the entire hub or drum assembly must be replaced to ensure the knurl locks safely into position.
How can I easily identify loose wheel nuts?
Highly visible plastic wheel nut indicators offer a low-cost, reliable solution. These indicators slide directly over your lug nuts and instantly detect any movement or loosening during visual inspections.
Government & Safety Standards
There are no FAQs for this product.
Additional information
| Weight | 0.2 kg |
|---|---|
| Dimensions | 4 × 2 × 2 cm |
| Stud Thread | M12x1.5 – 490300-12 |
| Stud Length | 40mm |
| Stud Knurl Length | 6.25mm |
| Stud Knurl Dia | 13.78mm |
| Stud Knurl Hole | 13.65mm |
| Stud Head Thickness | 4mm |
| Stud Head Hole Dia | 17.66 |
| Materials | High Tensile Steel (4140) |
Our Service Lifetime Warranty
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.
Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.
Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.
60-Day Returns
After 60 years of experience, we know that life has its unpredictable moments.
All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.
You can view our full policy for change-of-mind returns here.
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