Tire nuts are specialized nuts used to secure the outer wheel hub of a car. The following is a detailed introduction to tire nuts:
1, Function and Importance
The main function of tire nuts is to secure the wheel onto the axle or hub, preventing the wheel from loosening during normal driving, which could lead to accidents or damage. Correctly tightened tire nuts are crucial for the safety of the vehicle and its occupants. If the nut is loose or not tightened properly, it can cause vibration, uneven tire wear, and even in extreme cases, the wheel may come off during driving.
2, Types and specifications
1. Type:
Standard nut: also known as regular hex nut, it is the most common type of nut. They are usually made of carbon steel or stainless steel and have six equally sized faces. This type of nut is suitable for most common applications, such as securing tires and other components.
Special design nuts: Many modern wheel nuts adopt special designs or patterns (such as flower key drive, star shape, etc.), which require special tools to disassemble and have certain anti-theft functions.
2. Specifications:
The specifications of tire nuts are diverse, mainly distinguished by nut diameter and nut shape. According to the diameter of the nut, common ones include M6, M8, M12, M14, M20, M24, M30, etc. The specifications of nuts vary depending on different vehicle models. For example, many Japanese and Korean cars are 21mm, while Volkswagen cars are generally 17mm, and Honda car series are mostly 19mm.
According to the shape of the nut, there are hexagonal, square, butterfly, crown, round, cap, and knurled shapes. There are roughly four types of screws for car tires: 17mm, 19mm, 21mm, and 22mm, depending on the model of the car.
3, Characteristics and Structure
1. Characteristics:
Compared to regular hex nuts, tire nuts are generally thicker and have fine threads, with thread pitch of approximately 1.5 millimeters and 2.0 millimeters, respectively.
The shape of tire nuts is usually equilateral hexagonal, but there is a taper at one end of the nut. Some inside the taper have a step for placing nylon washers for locking, while others do not have a step. Some wheel hub nuts also have flange designs in the tapered area.
2. Structure:
The structure of tire nuts is simple, consisting of screws, nuts, and washers (if needed). The nut is used to fix the wheel onto the hub by mating with the thread of the screw.
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