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The key is normally unique to each set of nuts. Only one locking nut per wheel is normally used, so they are sold in sets of four. Most designs can be defeated using a hardened removal tool which uses a left-hand self-cutting thread to grip the locking nut, although more advanced designs have a spinning outer ring to frustrate such techniques.
Another variation of lug nut is the "locking wheel nut", which is used as a theft prevention method to keep thieves from stealing a vehicle's wheels. When utilizing locking wheel nuts, one standard lug nut on each wheel is replaced with a nut that requires a unique key (typically a computer-designed, rounded star shape) to fit and remove the nut.
The nuts themselves may have a mechanism that retains them inside the wheel once it is removed from the hub, to prevent loss and further streamline wheel changes. FIA rules also mandate an additional locking mechanism be included in F1 centerlock hubs, which manufacturers have implemented in different ways. [12]
A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, [1] stiff nut [1] or elastic stop nut, [2] is a nut that resists loosening under vibrations and torque. Prevailing torque nuts have some portion of the nut that deforms elastically to provide a locking action. [ 2 ]
One of the key features of the Pugh design is that it is self-tightening. The wheels on the right side of the car have a left hand thread on the nut and vice versa. If the wheel becomes loose the tendency is for the locking nut to tighten and hold the wheel securely. The system was taken up enthusiastically by the racing fraternity where the ...
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Many combination locks have three wheels, but the lock may be equipped with additional wheels, each with a drive pin and fly, in a similar manner. The number of wheels in the mechanism determines the number of specific dial positions that must be entered to open the lock, so a three-sequence combination is required for a three-wheel lock.
The boy’s mother was knocked under the cab and the still-spinning wheel was on top of the kid’s leg, a tourist visiting from Oregon told ABC 7.. The tourist and others nearby then dropped what ...