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The name comes from the appearance of a butterfly spreading its wings, and it is also called a butterfly nut or wing nut. This is a female thread that is used in combination with a male thread. Since the wing part can be tightened and removed by hand, it is used in places where fastening strength is not required and repeated attachment and detachment are required. Male screws and butterfly bolts of the same shape are also available. The entire product is made of metal and is durable, with a beautiful appearance and easy to keep clean, so it is used in a variety of places such as medical equipment, machine tools, power tools, agricultural machinery, home appliances, musical instruments, and furniture. They are classified into JIS types 1 to 4 based on the shape and size of the wing, manufacturing method, etc. The first type has an arc-shaped tip, and the second type has a rectangular shape with a small R type and a large H type, and the manufacturing method (heading, forging, casting, etc.) is arbitrary. Type 3 is defined as press processing, which is lightweight and inexpensive, and type 4 is defined as casting, which has a rectangular tip with a concave center part.
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Wing nutProduct
NutHandling Company
Bossard Co., Ltd.Categories
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