Spring Steel Blue-White Zinc Internal Tooth Lock Washer
The spring steel blue-white zinc internal tooth lock washer is a high-performance anti-loosening fastening component designed for secure mechanical connections under vibration and dynamic loads. As a reliable industrial fastener accessory, the spring steel blue-white zinc internal tooth lock washer provides strong locking force through its internal serrated teeth, which bite into the mating surface to prevent rotation and loosening.
In modern engineering systems, the spring steel blue-white zinc internal tooth lock washer is widely used with stainless steel hex bolt, DIN931 bolt, and other stainless steel fasteners or carbon steel fastening systems. It is an essential component in OEM assembly applications where vibration resistance and long-term joint stability are required.

Product Overview
The spring steel blue-white zinc internal tooth lock washer is manufactured from high-quality spring steel, ensuring excellent elasticity, hardness, and fatigue resistance. The internal tooth design increases friction between the fastener and the assembly surface, effectively preventing loosening under vibration or shock.
The blue-white zinc plating provides improved corrosion resistance and a clean industrial appearance, making the spring steel blue-white zinc internal tooth lock washer suitable for general machinery, electrical equipment, and industrial assemblies.
As part of OEM fasteners and mechanical locking systems, this washer is widely used in applications requiring reliable anti-loosening performance.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | spring steel blue-white zinc internal tooth lock washer |
| Material | spring steel |
| Washer Type | internal tooth lock washer |
| Surface Finish | blue-white zinc plated |
| Inner Diameter Range | m2 – m36 |
| Outer Diameter Range | standard industrial sizes |
| Thickness Range | standard elastic thickness |
| Locking Type | internal serrated teeth |
| Load Type | anti-loosening / vibration resistance |
| Packaging | box / bulk / oem packaging |
| Customization | available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 600–1000 mpa |
| Hardness | 420–520 hv |
| Elasticity | high spring resilience |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | good (zinc coating protection) |
| Operating Temperature | -50°c to 200°c |
| Vibration Resistance | high |
| Manufacturing Standard | industrial / iso equivalent |
Materials and Manufacturing Process
The spring steel blue-white zinc internal tooth lock washer is produced through a controlled stamping and heat treatment process:
- raw material selection: high-carbon spring steel
- stamping forming: precise internal tooth structure
- heat treatment: quenching and tempering for elasticity
- deburring: removal of sharp edges
- surface cleaning: removes oil and impurities
- blue-white zinc plating: corrosion protection layer
- passivation: improves coating durability
- inspection: dimensional and hardness testing
- packaging: anti-deformation export packaging
This ensures consistent performance for industrial fasteners used in vibration-prone environments.
Applications of the Product
The spring steel blue-white zinc internal tooth lock washer is widely used across multiple industries:
- machinery manufacturing: anti-loosening bolt assemblies
- automotive systems: engine and chassis connections
- electrical equipment: grounding and enclosure fastening
- industrial machinery: vibration-resistant assemblies
- construction equipment: structural fastening systems
- home appliances: mechanical fastening points
- OEM production lines: mass assembly applications
- general engineering: bolt locking systems
It is commonly used together with DIN933 and DIN931 bolts for improved fastening stability.
Why Choose This Product
- high-quality spring steel material
- strong elastic locking performance
- internal tooth design prevents loosening
- blue-white zinc corrosion protection
- stable performance under vibration
- compatible with metric fastening systems
- suitable for OEM bulk production
- cost-effective fastening solution
- long service life in industrial environments
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fastening systems.
- advanced stamping and heat treatment production lines
- strict ISO-based quality control system
- strong OEM customization capability
- stable mass production capacity
- global export experience
- engineering technical support
Flybear provides reliable industrial fasteners and complete fastening solutions for global industries.
Quality Inspection and Control
Each spring steel blue-white zinc internal tooth lock washer undergoes strict inspection:
- chemical composition testing
- hardness and elasticity testing
- dimensional accuracy inspection
- tooth structure integrity testing
- coating thickness measurement
- corrosion resistance testing
- surface defect inspection
- packaging quality inspection
All processes comply with ISO quality management standards.
Selection Guide
When selecting a spring steel blue-white zinc internal tooth lock washer, consider:
- bolt size compatibility (m2–m36)
- vibration level of application
- corrosion environment conditions
- required locking strength
- installation torque requirements
- assembly type and frequency
Proper selection ensures reliable anti-loosening performance.
FAQ
1. what is an internal tooth lock washer?
it is a washer with internal serrations that prevent bolt loosening.
2. what is its main function?
it increases friction to resist vibration-induced loosening.
3. why use blue-white zinc plating?
it improves corrosion resistance and surface appearance.
4. can it be reused?
it is generally not recommended for repeated critical assemblies.
5. can custom sizes be produced?
yes, flybear supports oem customization based on 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.
For quotation, customization, and technical support, please Contact Us.




