Square lock nut

螺栓與螺帽的鎖緊與開口採用非標準設計，搭配
使用非標準工具來解決打開和緊固問題。一般而言，其他
wrenches cannot be inserted. In the appearance design of nuts and bolts, non-standard slotting,
開口或五角、七角、九角或客製化對應槽工具
起到了很好的防盜效果

冷镦加工是一种少切削或无切削的压力加工新工艺
金屬。它是一種利用金屬在下列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

Square lock nuts are a type of locking nut designed to resist loosening under vibration and torque. They are commonly used in industrial and mechanical applications where secure fastening is critical. Here’s a detailed description:

Features of Square Lock Nuts:

1. Shape – As the name suggests, these nuts have a square profile instead of the typical hexagonal shape, providing a larger surface area for gripping with wrenches or other tools.

2. 鎖定裝置 – They often incorporate a locking feature such as:

   • Nylon Insert (PAL Nut) – A nylon ring inside the nut creates friction against the bolt threads to prevent loosening.

3. 材質 – Typically made from steel (plain, zinc-plated, or stainless steel), brass, or nylon for corrosion resistance and durability.

優勢：

• 耐高扭力 – The square shape allows for better grip and higher torque application.

• 抗震性 – The locking mechanism prevents loosening in high-vibration environments (e.g., machinery, automotive, and aerospace applications).

• No Need for Additional Lock Washers – The built-in locking feature eliminates the need for separate lock washers in many cases.

Installation Notes:

• Should be tightened to the recommended torque specifications.

• Nylon-insert types may lose effectiveness after repeated use due to wear.

• Serrated base types require a clean, flat surface for optimal grip.