DIN94 Carbon Steel Color Zinc Cotter Pin
DIN94 carbon steel color zinc cotter pin is a simple yet highly reliable mechanical locking fastener designed to secure bolted connections, shafts, and castellated nuts in industrial assemblies. The DIN94 carbon steel color zinc cotter pin is widely used in automotive systems, machinery equipment, agricultural machinery, and structural connections where vibration resistance and safety locking are required.
Manufactured from carbon steel with a color zinc plating, the DIN94 carbon steel color zinc cotter pin offers basic corrosion resistance, easy installation, and strong mechanical locking performance. It is an essential low-cost safety fastener in many industrial and engineering applications.

Product Overview
The DIN94 carbon steel color zinc cotter pin is designed to prevent loosening of nuts, bolts, and pins under vibration or load conditions. It is inserted through a drilled hole and then bent to lock components in place securely.
This DIN94 carbon steel color zinc cotter pin is commonly used with clevis pins, slotted nuts, and shaft assemblies. Its simple structure makes it easy to install and remove while maintaining reliable locking performance.
As a widely used industrial fastener, it plays a critical safety role in mechanical systems where accidental loosening must be prevented.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN94 |
| Product Name | DIN94 Carbon Steel Color Zinc Cotter Pin |
| Material | Carbon Steel |
| Surface Finish | Color Zinc Plated |
| Structure | Split Pin / Cotter Pin |
| Diameter Range | 1mm–10mm |
| Length Range | 10mm–100mm |
| Hardness | Standard carbon steel hardness |
| Corrosion Resistance | Moderate (improved by zinc coating) |
| Installation Type | Manual bending locking |
| Packaging | Bulk / small box / OEM packaging |
| Customization | Size and coating available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 400 MPa (typical carbon steel) |
| Shear Strength | Moderate, depends on diameter |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | Medium (color zinc coating protection) |
| Operating Temperature | -40°C to 120°C |
| Material Standard | Carbon steel wire standard |
| Manufacturing Standard | DIN94 / ISO equivalent |
Materials and Manufacturing Process
The DIN94 carbon steel color zinc cotter pin is manufactured through a simple but controlled process to ensure consistency and flexibility.
- Raw material selection: High-quality carbon steel wire
- Wire drawing: Achieves required diameter accuracy
- Cutting: Precision cutting into standard lengths
- Forming: Bending into split pin structure
- Heat treatment (optional): Improves flexibility and strength
- Surface finishing: Color zinc plating for corrosion resistance
- Inspection: Dimensional and surface quality check
- Packaging: Bulk or OEM packaging for industrial supply
Each DIN94 carbon steel color zinc cotter pin is designed for consistent bending performance and secure locking.
Applications of the Product
DIN94 carbon steel color zinc cotter pins are widely used across multiple industries:
- Automotive: Wheel hubs, suspension systems, and assemblies
- Machinery: Shaft locking and mechanical joints
- Agriculture: Tractor and farming equipment connections
- Construction: Temporary and structural locking systems
- Industrial equipment: Pins, rods, and linkage systems
- Marine applications: Basic fastening and safety locking
- Maintenance systems: Quick-lock mechanical assemblies
Their simple structure makes them ideal for fast installation and replacement.
Why Choose This Product
- Simple and reliable locking structure
- Quick installation and removal
- Cost-effective industrial fastening solution
- Zinc coating improves corrosion resistance
- Suitable for vibration-prone environments
- Compatible with various mechanical systems
- Available in multiple sizes
- OEM customization support
- Widely used global standard fastener
The DIN94 carbon steel color zinc cotter pin provides essential safety locking in mechanical assemblies.
Why Choose Flybear
Flybear is a professional manufacturer of industrial fasteners offering stable production and global supply capability.
- Advanced wire forming and fastener production lines
- Large-scale manufacturing capacity
- Custom size and coating options
- Strict quality inspection system
- Global export experience
- Technical support for industrial applications
Flybear provides reliable fastening solutions for OEM manufacturers, distributors, and engineering projects.
Quality Inspection and Control
Quality control ensures stable performance and dimensional accuracy:
- Wire material composition testing
- Diameter and length measurement
- Bending flexibility inspection
- Surface coating thickness check
- Corrosion resistance sampling test
- Visual defect inspection
- Packaging quality verification
All processes follow ISO-based quality standards.
Selection Guide
When selecting DIN94 carbon steel color zinc cotter pins, consider:
- Required diameter and length
- Load and vibration conditions
- Environmental corrosion level
- Shaft or nut compatibility
- Installation space requirements
- Safety locking requirements
Proper selection ensures reliable mechanical safety performance.
FAQ
1. What is a DIN94 cotter pin used for?
It is used to lock bolts, nuts, and pins to prevent loosening.
2. Can cotter pins be reused?
Yes, but reuse depends on deformation condition after removal.
3. What is color zinc plating?
It is a protective coating that improves corrosion resistance and appearance.
4. Where are cotter pins commonly used?
They are widely used in machinery, automotive, and agricultural equipment.
5. Can custom sizes be produced?
Yes, Flybear supports full customization for industrial requirements.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




