M5*12mm Safety Wire Bolt

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

An M5*12mm safety wire bolt is a specialized fastener designed to be secured with safety wire (also known as lock wire) to prevent loosening under vibration or rotation. Here’s a detailed description:

主要功能：

1. Thread Size (M5):

   • Metric coarse thread with a 5mm nominal diameter (standard pitch: 0.8mm).

   • Commonly used in aerospace, automotive, and machinery applications.

2. Length (12mm):

   • 12mm shank length (measured from under the head to the thread end).

   • May have a partially threaded or fully threaded design depending on application.

3. 頭部類型：

   • Typically has a hex head (e.g., M5×12mm hex bolt) for wrench tightening.

   • Some variants may feature a drilled head 或 drilled shank for safety wire passage.

4. 安全線孔：

   • A small hole (usually 0.8–1.2mm diameter) drilled through the head or near the thread end.

   • Allows a wire (often stainless steel) to be threaded through and twisted to adjacent bolts/fasteners.

5. 材質：

   • Often made of 不銹鋼 (A2/A4) 耐腐蝕性。

   • M5*12mm Safety Wire Bolt

   • Other options: carbon steel (plated) 或 鈦 (for aerospace use).

6. 標準：

   • 可能符合 MS, NAS, AN, or DIN standards (e.g., NASM/MS21250 for aerospace).

常見應用：

• Aircraft engines and components.

• High-vibration machinery (e.g., motorcycles, race cars).

• Military and industrial equipment.

安全線方式：

• The bolt is torqued to specification, then wired to another bolt or fixed point in a way that tension prevents counter-rotation.