桶螺帽

冷镦加工是一种少切削或无切削的压力加工新工艺
它是一種利用金屬在以下因素作用下產生塑性變形的加工方法。
外力作用下，在模具的幫助下，重新分配和轉移金屬的體積，以形成
所需的零件或坯料。冷镦工艺最适合生产标准的
螺栓、螺絲、螺帽、鉚釘和銷等緊固件

A 桶 螺帽 (也稱為 cross dowel, spine nut, or 結合職位) is a fastening component designed to provide strong and secure joints in various applications, including furniture, aerospace, automotive, and mechanical assemblies. It consists of a short, cylindrical metal body with an internally threaded hole, allowing it to receive a bolt or screw.

1. Design and Features

• Shape: Cylindrical or slightly elongated, sometimes with flanges or slots for improved grip.
• Internal Threading: The hole inside the barrel nut is threaded to accommodate a bolt or machine screw.
• 材質： Typically made from steel, stainless steel, brass, aluminum, or titanium, depending on the strength and corrosion resistance required.
• Size Variations: Comes in different diameters, thread sizes, and lengths to fit specific applications.
• Orientation: The internal threading is usually perpendicular to the length of the barrel, but some designs allow parallel alignment.

2. Types of Barrel Nuts

(A) Based on Shape and Structure:

1. Standard Barrel Nut: A simple cylindrical body with internal threading, used in furniture and general fastenings.
2. Cross Dowel (Perpendicular Barrel Nut): The bolt passes perpendicular to the nut, commonly found in furniture joints.
3. Flanged Barrel Nut: Has an extended flange at one end for better load distribution and stability.
4. Slotted Barrel Nut: Includes a slot or screwdriver groove for easy tightening and alignment.
5. Binding Post (Chicago Screws): Consists of a male and female part, often used in bookbinding and leather products.