superscaniaV8:
Wheel Nut 3:
It’s called a DNF fastener.Do Not Faff [emoji23]
[emoji38]so you think it may be a bugger to get undone?
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One of a range of “anti-tamper” fasteners, designed to stop us playing with things like microwave ovens. If they are reassembled wrongly there is a health risk from leaking microwave radiation.