DIN127B Black Oxide Split Spring Washer
DIN127B black oxide split spring washer is a reliable locking component designed to improve the stability of bolted connections and reduce loosening caused by vibration and dynamic loads. The DIN127B black oxide split spring washer is manufactured from high-quality spring steel with a black oxide surface treatment, providing stable elastic performance, improved appearance, and basic corrosion protection.
The DIN127B black oxide split spring washer is widely used in machinery, automotive components, industrial equipment, electrical products, and general mechanical assemblies where secure fastening and consistent spring force are required.

Product Overview
The DIN127B black oxide split spring washer is engineered to provide additional axial pressure within threaded fastening systems. Its split ring structure creates spring tension when compressed between a bolt head or nut and the assembly surface, helping maintain joint stability.
Compared with standard flat washers, the DIN127B black oxide split spring washer provides elastic recovery that helps compensate for minor movement, vibration, and settling in bolted connections. The black oxide finish creates a uniform dark appearance and offers improved surface protection compared with untreated steel.
This washer is commonly selected for industrial applications where a compact and economical locking solution is required.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN127B |
| Product Name | Black Oxide Split Spring Washer |
| Material | Spring Steel |
| Washer Type | Split Spring Washer |
| Surface Treatment | Black Oxide |
| Structure | Helical Split Ring Design |
| Size Range | M2–M48 |
| Inner Diameter | According to DIN127B Standard |
| Outer Diameter | According to DIN127B Standard |
| Thickness | According to Standard Requirements |
| Color | Black Finish |
| Installation Type | Bolt and Nut Assembly |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Size, material, finish available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material Grade | Spring Steel |
| Tensile Strength | High-strength spring performance |
| Hardness | Controlled for elastic characteristics |
| Elastic Recovery | Excellent |
| Fatigue Resistance | Good |
| Surface Treatment | Black Oxide |
| Corrosion Resistance | Improved for indoor applications |
| Manufacturing Standard | DIN127B |
Materials and Manufacturing Process
The DIN127B black oxide split spring washer is manufactured through precision forming, heat treatment, and surface finishing processes to ensure consistent spring force and dimensional accuracy.
- Raw material selection: High-quality spring steel strip
- Forming process: Precision rolling and shaping of split ring structure
- Edge processing: Removes burrs and sharp edges
- Heat treatment: Improves hardness, elasticity, and fatigue resistance
- Surface cleaning: Removes oil and processing residues
- Black oxide treatment: Creates uniform black protective finish
- Quality inspection: Dimension, hardness, and surface quality testing
- Packaging: Protective industrial packaging for transportation
Each DIN127B black oxide split spring washer is produced under strict quality control to ensure reliable fastening performance.
Applications of the Product
The DIN127B black oxide split spring washer is widely used across multiple industries:
- Machinery manufacturing: Equipment assembly and maintenance
- Automotive industry: Mechanical component fastening
- Electrical equipment: Product enclosure and component assembly
- Industrial automation: Machine structure connections
- Power tools: Compact fastening systems
- Construction equipment: General mechanical joints
- Manufacturing systems: Standard bolt connections
- OEM products: Customized assembly applications
Its compact design and reliable spring action make it suitable for general fastening requirements.
Why Choose This Product
- DIN127B standard compatibility
- High-strength spring steel construction
- Reliable elastic locking performance
- Black oxide finish improves appearance
- Helps reduce bolt loosening
- Suitable for general vibration applications
- Cost-effective fastening solution
- Easy installation and replacement
- OEM customization support
The DIN127B black oxide split spring washer provides a practical solution for improving threaded connection stability.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Advanced stamping and heat treatment capability
- Experience with spring washer production
- Black oxide surface treatment capability
- OEM/ODM customization support
- Stable production capacity for bulk supply
- Strict quality inspection procedures
- Global export experience
- Engineering support for customized requirements
Flybear provides reliable fastening products for machinery, automotive, electronics, and industrial customers worldwide.
Quality Inspection and Control
Quality assurance is maintained throughout production:
- Spring steel chemical composition analysis
- Material certificate verification
- Inner and outer diameter inspection
- Thickness measurement
- Hardness testing
- Elastic performance testing
- Black oxide coating inspection
- Surface appearance inspection
- Packaging quality verification
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting a DIN127B black oxide split spring washer, consider:
- Bolt diameter compatibility
- Required spring force
- Vibration level of the assembly
- Working environment
- Corrosion protection requirements
- Matching bolt and nut materials
Proper selection improves fastening stability and supports longer assembly service life.
FAQ
1. What is DIN127B black oxide split spring washer used for?
It is used to provide spring pressure and improve stability in bolted connections.
2. What is the advantage of black oxide treatment?
Black oxide provides a uniform appearance and improves surface protection for general applications.
3. What material is used for DIN127B spring washers?
They are commonly manufactured from high-strength spring steel.
4. Can DIN127B black oxide washers be customized?
Yes, Flybear supports customized sizes, materials, finishes, and packaging.
5. Are split spring washers suitable for vibration applications?
They are suitable for general vibration conditions and standard industrial fastening applications.
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.




