pyöränpultti

Pyöränpultti is the Finnish word for wheel bolt. A wheel bolt is a fastener used to attach a wheel to a vehicle's hub. It typically consists of a threaded shaft and a head that seats against the wheel. The bolt passes through a hole in the wheel and screws into a threaded hole in the hub or a bolt receptacle. Wheel bolts are designed to withstand significant tensile and shear forces generated during vehicle operation.

The material used for wheel bolts is usually high-strength steel, often hardened and tempered to ensure durability and resistance to fatigue. They are commonly coated to prevent corrosion. The head of a wheel bolt can come in various shapes, such as a conical or spherical seat, designed to mate precisely with the corresponding surface on the wheel. This secure seating is crucial for proper wheel alignment and to prevent the wheel from loosening.

Proper tightening of wheel bolts is essential for vehicle safety. Over-tightening can strip the threads or damage the bolt, while under-tightening can lead to the wheel becoming loose and potentially detaching. Torque wrenches are used to ensure the bolts are tightened to the manufacturer's specified torque value. Regular inspection of wheel bolts for signs of wear, damage, or looseness is recommended as part of routine vehicle maintenance.