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Butterfly screws, also known as wing nuts or butterfly nuts, are a distinctive type of fastener that have gained popularity in various engineering and design applications due to their unique shape and functionality. These screws derive their name from their appearance, which resembles a butterfly in flight when the wings are fully opened. The wings serve as handles, allowing for quick and easy tightening or loosening by hand without the need for additional tools.

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Another significant advantage of the ribbed wafer head is its enhanced uniformity. In semiconductor manufacturing, uniformity is critical to achieving consistent device performance and yield In semiconductor manufacturing, uniformity is critical to achieving consistent device performance and yield In semiconductor manufacturing, uniformity is critical to achieving consistent device performance and yield In semiconductor manufacturing, uniformity is critical to achieving consistent device performance and yieldribbed wafer head. The ribbed structure helps to reduce variations in temperature and processing conditions across the wafer surface, leading to more uniform device characteristics. This is particularly important for advanced technologies such as FinFETs and EUV lithography, where small variations can have a significant impact on device performance.

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