M5*12mm Safety Wire Bolt

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

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:

Key Features:

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. Head Type:

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

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

4. Safety Wire Hole:

   • 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. Material:

   • Often made of stainless steel (A2/A4) for corrosion resistance.

   • M5*12mm Safety Wire Bolt

   • Other options: carbon steel (plated) or titanium (for aerospace use).

6. Standards:

   • May comply with MS, NAS, AN, or DIN standards (e.g., NASM/MS21250 for aerospace).

Common Applications:

• Aircraft engines and components.

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

• Military and industrial equipment.

Safety Wire Method:

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