Acorn Lug Nuts Safety Tips – The following images show dangerous acorn lug nut installations that could results in damages, injury and death. These tip can also apply to other types of lug nuts.
Acorn Lug Nuts Safety Tips
When the diameter of the acorn lug nut at the tip is too small or the lug hole in the wheel is too large it can cause the nut to bottom out against the base of the rotor or brake drum before actually seating against the custom wheel. This will prevent the wheel from being properly secured.
If the lug is not tall enough or not threaded deep enough the stud will bottom out before the nut makes proper contact with the clamping surface. This will also prevent the wheel from being properly secured.
This image shows what can happen when the stud is not long enough to allow for 10 full turns of thread engagement on an Acorn Lug Nut. This often occurs when the center pad area of the wheel is extra thick or a spacer has been used.
Never try to use a metric thread acorn lug nut on a US standard thread stud or vice versa. While close 3/8 inch and 10mm, 1/2 inch and 12mm and 9/16 inch are not compatible.
Never use a 60 degree conical seat acorn lug nut on a custom rim with a 90 degree conical seat lug hole or vice versa. There will not be enough contact surface to properly secure the wheel.
Sometimes the acorn lug nut may appear tall enough but it may not be threaded deep enough. This problem will caise the stud to bottom out in the top of the nut before the nut clamping surface properly mates to the clamping surface of the wheel.