Wheel Nut – M18 (1.5TPI)

Name: Wheel Nut - M18 (1.5TPI)
Brand: Couplemate
SKU: WHEELNUT-M18
Price: 18.00 AUD
Availability: InStock

SKU: WHEELNUT-M18 Category: Wheel Studs and Nuts Brand: Couplemate

Price

$18.00 Inc.GST

Shipping

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This premium-grade M18 Wheel Nut (1.5mm Pitch) is engineered for heavy-duty automotive, agricultural, and commercial trailer applications.

Manufactured from high-tensile Class 8 steel, it provides maximum clamping force and exceptional resistance to severe vibration and dynamic loads.

A protective zinc-plated coating ensures outstanding long-term corrosion resistance, making it an ideal choice for demanding outdoor and industrial environments.

Key Features

High-Tensile Build: Forged from Class 8 carbon steel to withstand extreme torque thresholds.
Corrosion Protection: Clear zinc plating shields the threads and body against moisture and road salt.
Precision Machinery: Clean, CNC-machined threads prevent cross-threading and ensure accurate torque delivery.
Versatile Application: Perfect for a wide range of agricultural machinery, commercial trailers, and heavy transport hubs.

Technical Specifications

Please verify your stud dimensions against the specifications below before purchasing:

Thread Diameter	M18 (18mm)
Thread Pitch	1.50mm (Metric Fine)
Spanner / Hex Size	27mm A/F (Across Flats)
Material Grade	High-Tensile Class 8 Steel
Finish / Coating	Bright Zinc Plated (BZP)
Thread Direction	Right-Hand (Standard)
Seat Design	Conical / Tapered (60-Degree) or Spherical Radius option available

Frequently Asked Questions

What does 1.5 mean on an M18 nut?

The 1.5 refers to the thread pitch in millimetres (1.5mm distance from one thread ridge to the next). This is a metric fine-thread profile, standard for high-vibration structural connections like vehicle wheels.

Can I use an impact gun to install these wheel nuts?

You can use an impact wrench to spin the nuts on loosely, but we strongly recommend finishing the installation with a calibrated manual torque wrench. Over-tightening with an impact gun can stretch the wheel studs or distort the nut threads.

Will these nuts fit my specific trailer or tractor model?

M18 x 1.5 fasteners are highly common on commercial trailer hubs (such as 4.5-tonne axles) and agricultural equipment like Deutz-Fahr, Valmet, and Valtra. Always cross-check your existing stud’s outside diameter and pitch before you buy.

Are these wheel nuts reusable?

Yes. Because they are precision-machined from high-strength Class 8 carbon steel, they are designed for repeated removal and installation, as long as the threads stay undamaged and free of debris.

Additional information

Weight	0.1 kg
Dimensions	4 × 4 × 2 cm

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.