GB91 Carbon Steel Split Pin
GB91 carbon steel split pin is a standard mechanical locking fastener designed to secure bolts, nuts, and pin connections in machinery and structural assemblies. The GB91 carbon steel split pin is widely used in automotive systems, agricultural machinery, construction equipment, and industrial installations where vibration resistance and safety locking are required.
With its simple yet reliable structure, the GB91 carbon steel split pin provides a cost-effective solution for preventing loosening of fastened joints. It is inserted through a pre-drilled hole and bent after installation to achieve secure mechanical locking.
Product Overview
The GB91 carbon steel split pin is engineered as a safety locking component for mechanical assemblies. It ensures that critical fasteners such as clevis pins and castellated nuts remain securely in place under vibration and load conditions.
This GB91 carbon steel split pin is widely used in equipment requiring quick installation and reliable anti-loosening performance. Its flexible structure allows easy bending and removal, making it suitable for maintenance-friendly systems.
As a widely used industrial fastener, it plays a key safety role in preventing accidental disassembly in mechanical systems.
Product Specifications
| Item | Description |
|---|---|
| Standard | GB91 |
| Product Name | GB91 Carbon Steel Split Pin |
| Material | Carbon Steel |
| Surface Finish | Plain / Zinc Plated / Color Zinc |
| Structure | Split Pin (Cotter Pin) |
| Diameter Range | 0.8mm–10mm |
| Length Range | 8mm–100mm |
| Hardness | Standard carbon steel hardness |
| Corrosion Resistance | Moderate (improved with plating) |
| Installation Type | Manual bending locking |
| Packaging | Bulk / small box / OEM packaging |
| Customization | Size, coating, packaging available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 400 MPa (typical carbon steel) |
| Shear Strength | Depends on diameter size |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | Medium (enhanced with zinc coating) |
| Operating Temperature | -40°C to 120°C |
| Material Standard | Carbon steel wire standard |
| Manufacturing Standard | GB91 / ISO equivalent |
Materials and Manufacturing Process
The GB91 carbon steel split pin is manufactured through a controlled wire forming process to ensure flexibility and consistent performance.
- Raw material selection: High-quality carbon steel wire rod
- Wire drawing: Achieves precise diameter control
- Cutting: Precision cutting into standard lengths
- Forming: Split pin bending and shaping process
- Heat treatment (optional): Improves flexibility and strength balance
- Surface finishing: Zinc plating or color zinc coating
- Inspection: Dimensional and bending performance checks
- Packaging: Bulk or OEM export packaging
Each GB91 carbon steel split pin is designed for reliable bending performance and secure locking under vibration conditions.
Applications of the Product
GB91 carbon steel split pins are widely used in:
- Automotive systems: Wheel hubs and suspension locking
- Agricultural machinery: Tractor linkage and attachments
- Mechanical equipment: Shaft and pin locking systems
- Construction machinery: Structural safety locking
- Industrial assemblies: Clevis pin and hinge systems
- Marine applications: Basic mechanical locking systems
- Maintenance systems: Quick assembly and disassembly components
Their simple structure makes them ideal for fast installation and maintenance.
Why Choose This Product
- Simple and reliable mechanical locking design
- Quick installation and removal
- Cost-effective industrial fastening solution
- Compatible with multiple mechanical systems
- Zinc coating improves corrosion resistance
- Suitable for vibration environments
- Available in multiple standard sizes
- OEM customization support
- Widely used global standard (GB91)
The GB91 carbon steel split pin ensures safe and stable locking performance in mechanical assemblies.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fastening systems and precision metal components.
- Advanced wire forming production capability
- Stable mass production for global supply
- Custom size and coating options available
- Strict quality inspection system
- Strong OEM and export experience
- Technical support for industrial applications
Flybear provides reliable fastening solutions for OEM manufacturers, distributors, and engineering projects worldwide.
Quality Inspection and Control
Strict quality control ensures product consistency:
- Wire material chemical analysis
- Diameter and length measurement
- Bending flexibility testing
- Surface coating inspection
- Corrosion resistance sampling tests
- Visual defect inspection
- Packaging quality verification
All processes comply with ISO quality management standards.
Selection Guide
When selecting GB91 carbon steel split pins, consider:
- Required diameter and length
- Load and vibration conditions
- Corrosion environment level
- Shaft or pin compatibility
- Installation and maintenance requirements
- Safety locking requirements
Proper selection ensures reliable and long-lasting performance.
FAQ
1. What is a GB91 split pin used for?
It is used to lock nuts, bolts, and pins to prevent loosening.
2. Can split pins be reused?
They can be reused if not deformed, but replacement is recommended for safety.
3. What is the difference between split pin and cotter pin?
They refer to the same type of fastener used for locking.
4. Is zinc plating necessary?
It improves corrosion resistance and extends service life.
5. Can custom sizes be produced?
Yes, Flybear supports full customization.
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.
