Split Pins
Product Overview
Split pins, also commonly known as cotter pins, are simple yet highly effective mechanical fasteners used to lock nuts or other fasteners in place. They are usually made of a single piece of bent metal wire with a loop at one end and two tips at the other, which are separated to form a “split.” The versatility and reliability of split pins make them one of the most widely used types of fastening accessories in mechanical assemblies, farm machinery, automotive components, and various industrial sectors.
Split pins serve as secondary locking devices and are often inserted through pre-drilled holes in shafts or bolts. Once inserted, the extended prongs are bent outward to secure the pin, preventing unintentional loosening due to vibration or load.
Product Specifications
| Parameter | Specification |
|---|---|
| Diameter Range | 1.0 mm – 12 mm |
| Overall Length | 10 mm – 150 mm |
| Head Type | Standard Eye, Hammerhead |
| Tip Type | Split/Pronged Ends |
| Shank Style | Straight |
| Packaging | Carton + Pallet or Custom Packaging |
These specifications make split pins suitable for a wide variety of assembly applications that require reliable locking without complex mechanisms.
Technical Parameters
| Parameter | Specification |
|---|---|
| Surface Finish | Zinc Plated, Electro-Galvanized, Black Oxide, Nickel Plated |
| Applicable Standards | DIN 94, ISO 1234, ANSI/ASME, GB/T91 |
| Certifications | RoHS, CE marking, ISO9001, IATF16949 |
Material Selection and Manufacturing Process
Split pins are typically manufactured from materials like stainless steel (304/316), brass, copper, and carbon steel.
- Stainless Steel 304/316: Known for their excellent corrosion resistance, especially in marine, wet, or chemical environments.
- Carbon Steel: Offers cost-effectiveness and sufficient mechanical strength for general-duty applications.
- Brass and Copper: Provide good conductivity and are used in electrical or aesthetic applications.
Manufacturing Workflow:
- Raw Material Inspection
- Cold Heading or Hot Forging Process
- Precision Cutting and Eye Loop Formation
- Surface Treatment (zinc/nickel coating, black oxide, etc.)
- Inspection (tolerances, surface finish)
- Packaging and Labeling
This comprehensive process ensures that every Split Pin produced by Flybear Fastener meets stringent performance and durability standards.
Common Applications and Industries
Split pins are widely used across various sectors due to their simplicity and mechanical reliability:
- Automotive Assemblies: Steering components, axle shafts
- Industrial Equipment: Industrial machinery, conveyor systems
- Aerospace and Aviation: Non-critical locking mechanisms
- Agriculture Machinery: Tractor linkages, plow systems
- Marine: Boat engines, transmission systems
- DIY and Home Improvement Projects
These fasteners ensure ease of assembly and disassembly, especially in applications where shock and vibrations are present.
Key Product Advantages Featuring Split Pins
Core Features and Benefits:
- Precision Manufacturing: Exceptional tolerances to ensure perfect fit
- Corrosion Resistance: Advanced surface treatments improve durability
- Customization Available: Can be made based on drawings or samples
- Material Quality: Only premium-grade stainless and alloy steels used
- Inventory: Sufficient stock ensures fast delivery
- Excellent Service: Professional engineering and after-sales support
Testing & Quality Control
At Flybear Fastener, quality assurance is paramount. Our facilities are equipped with industry-standard testing tools:
- Thread gauges and calipers (dimensional precision)
- Salt spray (salt fog) test machine for corrosion resistance
- Magnetic particle inspection for cracks and flaws
- Hardness testing (Rockwell and Vickers)
- Tensile strength machines
- Spectrometers for chemical composition analysis
- Optical Sorting Machines for visual quality inspection
Each batch of split pins undergoes stringent quality checks. We follow ISO9001 and IATF16949 quality systems to ensure that every shipment meets customer requirements.
How to Choose and Source the Right Split Pins
When selecting Split Pins, consider the following:
- Diameter and Length: Should match the shaft and hole dimensions
- Material: Depending on application stress and environmental conditions
- Standard Compliance: Verify compatibility with DIN, ISO, or ANSI
- Quantity: Estimate based on maintenance or production requirements
- Surface Finish: Choose an appropriate coating for anti-corrosion
It’s recommended to work with a professional supplier like Flybear Fastener that offers technical assistance during selection and application stages.
Conclusion: Your Reliable Split Pin Supplier
At Flybear Fastener, we’re committed to manufacturing and supplying the highest quality fastener products on the market. We understand that every industry has unique needs, which is why we offer tailored solutions to help you build reliably and efficiently.
Whether you are from automotive, aerospace, agriculture, or general machinery industries, we invite you to contact us for pricing, samples, and technical support.
We always adhere to the philosophy of “Quality First, Customer Foremost,” aiming to be your long-term fastening solution provider.
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