Lug nut and bolt
A lug nut or bolt is a fastener used on steel and aluminum wheels. A set of lug nuts is typically used to secure a wheel to threaded wheel studs and thereby to a vehicle’s axles. Some designs (Audi, BMW, Mercedes-Benz, Saab, Volkswagen) use lug bolts or wheel bolts instead of nuts, which screw into a tapped (threaded) hole in the wheel’s hub or brake drum or brake disc.
Each lug nut and bolt needs to be fitted on a correct seat as below.
Anti-theft nuts or bolts
In countries where the theft of alloy wheels is a serious problem, locking nuts or bolts are available, or already fitted by the vehicle manufacturer, which require a special adaptor (“key”) between the nut/bolt and the wrench to fit and remove. The key is normally unique to each set of nuts/bolts. Only one locking nut/bolt per wheel is normally used, so they are sold in sets of four.
Removal and installation
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1.Preparing the locking bolt,key and wrench. Note:choose the correct wrench |
2.Matching the key and locking bolt. |
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| 3.Removing one of normal bolt and replacing it to
locking bolt. Note: It only needs to replace one of the bolts withlocking bolt to achieve anti-theft. |
4.First tightening the locking bolt manually. |
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| 5.Using the wrench to tightening the locking bolt.
Note: please don’t use the impact wrench to avoid damaging the key and the matching between the key and locking bolt. |
6.Finished. |