Wheel Nuts
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How to Choose Wheel Nuts

01
CHOOSE THE RIGHT WHEEL CHOCKS
Rubberised chocks are rated 5t to 10t and suit standard commercial vehicles. PU chocks are available in 5t to 6t and 20t ratings for heavier plant and fleet vehicles.
02
SELECT YOUR WHEEL NUT SIZE
Wheel nut indicators are available in ring and cap styles from 19mm to 41mm. Measure your wheel nuts with callipers before ordering to ensure correct fit and reliable loosening detection.
03
CHOOSE THE RIGHT LOAD FLAG
The 300mm long load flag suits loads extending past the rear of the vehicle. The 450mm oversized load flag suits wider or larger loads. Check local transport regulations for specific requirements.
04
CONFIRM WHS COMPLIANCE
Wheel chocks are required under Australian WHS legislation when parking vehicles on grades or during loading and unloading. Wheel nut indicators support heavy vehicle maintenance obligations.

Frequently asked questions
Are wheel nut indicators reusable?

Wheel nut indicators are generally treated as single use. Once a nut has been retorqued or the wheel removed for any reason, the indicator should be replaced rather than reused, so the alignment reference stays accurate. Given they are supplied in bulk packs, replacing them as part of routine maintenance is straightforward and low cost.
How are wheel nut indicators fitted?

Load flags are required when a load extends beyond the standard permissible dimensions of a vehicle under Australian road transport rules. The specific thresholds at which flags, signs, or pilot vehicles become mandatory vary between states and territories and are set out under each jurisdiction's heavy vehicle transport legislation. As a general guide, loads extending more than 150mm beyond the rear of the vehicle require a flag or marker. A long load flag in neon orange (300 x 300mm) is typically used to mark loads extending beyond the rear length of the vehicle. An oversized load flag in red and yellow (450 x 450mm) is used for loads that exceed standard width or height limits and are classified as oversize under state regulations. We recommend confirming the specific requirements with the relevant transport authority or your transport manager for your state before each trip.
What size wheel nut indicator do I need?

Wheel nut indicators are sized to match the nut they sit over, so the right fit depends on the nut size for your specific vehicle or trailer. We stock a range of sizes to cover most commercial trucks, trailers and heavy vehicles. If you are unsure of your nut size, check your vehicle manual or measure an existing nut before ordering, as an indicator that does not fit properly will not give a reliable reading.
What are wheel nut indicators used for?

Wheel nut indicators are fitted over the wheel nuts on trucks, trailers and heavy plant to make loosening visible at a glance. Once aligned during installation, any movement in the nut rotates the indicator out of position, giving a clear signal during a walkaround check without needing tools or torque checks on every wheel. They are widely used across transport, mining and civil fleets as part of routine vehicle inspections.
What is the difference between ring style and cap style indicators?

Indicators are pushed on and aligned so that all indicators on a wheel point in the same direction, usually straight after nuts have been torqued to the correct specification. This gives a consistent reference point, so any indicator that has rotated out of line is easy to spot during a pre trip or maintenance check. No special tools are required for fitting.