Product Description
Black oxide spring lock washers are anti-loosening washers that undergo a blackening process for surface treatment. Their open, elastic structure generates a continuous counterforce after installation, preventing loosening.
Compared to standard washers, blackened spring washers not only offer excellent mechanical properties but also feature a professional appearance, making them particularly suitable for industrial applications where both strength and aesthetics are critical.
Product Specifications
|
Product Name |
Black oxide spring lock washers, Blackened Spring Washers, Blackened Open-Type Spring Washers |
|
Standards |
DIN 127 / GB/T 93 |
|
Material |
65Mn Spring Steel |
|
Surface Treatment |
Blackening (Black Oxide Treatment) |
|
Structure |
Open-type spring washers, used for bolt and nut anti-loosening |
Common Size Chart (DIN 127 / GB/T 93) (Unit: mm)
|
Specifications |
Inner Diameter d |
Outer Diameter D |
Thickness t |
|
M3 |
3.2 |
6 |
0.8 |
|
M4 |
4.3 |
8 |
1.0 |
|
M5 |
5.3 |
10 |
1.2 |
|
M6 |
6.4 |
12 |
1.6 |
|
M8 |
8.4 |
16 |
2.0 |
|
M10 |
10.5 |
20 |
2.5 |
|
M12 |
13.0 |
24 |
3.0 |
|
M14 |
15.0 |
27 |
3.5 |
|
M16 |
17.0 |
30 |
4.0 |
|
M20 |
21.0 |
37 |
5.0 |
|
M24 |
25.0 |
44 |
6.0 |
Do you need to source washers, nuts, bolts, or other fasteners for your project? Contact us for a free consultation.
Our Factory
Functions and Characteristics of Spring Washers
The function of a spring washer is to apply spring force to the nut after it has been tightened, pressing the nut firmly against the bolt to prevent it from coming loose. The primary purpose of the spring is to apply force to the nut after tightening, thereby increasing the friction between the nut and the bolt. Spring washers are generally used instead of flat washers (except when a flat washer is required to protect the surface of the fastener or the mounting surface). The primary function of a flat washer is to distribute pressure, protect the material surface, and maintain a secure connection. The primary function of a spring washer is to prevent loosening through its elasticity, making it suitable for environments with vibration or dynamic loads.
The black oxided spring lock washers manufactured by Jihao Fasteners feature the following characteristics:
Excellent anti-loosening performance
Strong rust resistance and wear resistance
High strength
High hardness
High compatibility
Easy installation
Applications
- Internal fastening in machine tools, mechanical equipment, motors, fans, and pump housings
- Assembly of automobiles, agricultural machinery, and construction machinery
- Molds, hydraulic equipment, and transmission mechanisms
- As black fasteners to meet uniform color requirements
- Indoor equipment and mechanical structures unsuitable for galvanized environments
Recommendations for Use
To ensure optimal anti-loosening performance, please note the following when using these products:
1. Install between the nut or bolt head and the connected component
2. For best results, use in combination with flat washers
3. In high-vibration environments, we recommend periodically checking the tightness of fasteners
Why Choose Us?
We offer more than just products; we provide stable, reliable supply and service support:
-
Large stock of standard specifications for fast shipping
- Customization based on drawings or samples to flexibly meet your needs
- Strict quality control processes ensure consistent quality across every batch
- Years of industry experience serving numerous mechanical and engineering clients
- Dedicated professional team for quick response to inquiries
If you are comparing prices, quality, or supply capabilities for blackened spring washers, please contact us for the latest quotes and sample support.
Whether for small-batch trial orders or large-scale long-term partnerships, we can provide you with highly competitive solutions.
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