Product Introduction
Stainless steel flat washers are a common type of fastener accessory, typically used in conjunction with bolts and nuts. Their primary functions are to distribute pressure, protect mating surfaces, and prevent loosening. They are widely used in mechanical equipment, construction, electronics, and outdoor facilities.
Product Specifications
- Product Name: Stainless Steel Flat Washers, Flat Gaskets, Stainless Steel Washers
- Standards: DIN 125 / DIN 9021 / GB/T 97.1
- Common Materials:
304 Stainless Steel (A2): General-purpose rust and corrosion resistance
316 Stainless Steel (A4): Seawater resistance, acid and alkali resistance, marine engineering grade
- Surface Treatment: Natural finish, pickled and passivated
- Applications: Increase bearing surface area, protect workpieces, distribute force evenly, prevent loosening
Product Features
Made of stainless steel, these washers are resistant to rust, moisture, salt spray, and oxidation, making them ideal for outdoor, coastal, food, medical, and chemical applications.
Flat washers effectively distribute bolt pressure, preventing damage to workpiece surfaces and ensuring a flatter installation.
Available in DIN or GB standard sizes, they are perfectly compatible with various stainless steel bolts and nuts.
We offer standard flat washers, thickened flat washers, and custom-sized washers to meet diverse assembly requirements.
Stainless steel flat washers feature a smooth, burr-free surface, making them ideal for equipment and projects with high aesthetic and hygiene standards.
Applications
- Food processing equipment, medical devices, water treatment equipment
- Marine vessels, offshore engineering, coastal facilities (316)
- PV mounting systems, curtain walls, guardrails, outdoor steel structures
- Instruments and meters, electronic enclosures, piping and valves
- Corrosion-resistant fastening applications in chemical, seawater, and high-humidity environments
Common Size Chart (DIN 125 / DIN 9021)(unit:mm)
|
Specifications |
Inner Diameter d |
Outer Diameter D |
Thickness t |
|
M3 |
3.2 |
7 |
0.5 |
|
M4 |
4.3 |
9 |
0.8 |
|
M5 |
5.3 |
10 |
1.0 |
|
M6 |
6.4 |
12 |
1.6 |
|
M8 |
8.4 |
16 |
1.6 |
|
M10 |
10.5 |
20 |
2.0 |
|
M12 |
13.0 |
24 |
2.5 |
|
M16 |
17.0 |
30 |
3.0 |
|
M20 |
21.0 |
37 |
3.0 |
|
M24 |
25.0 |
44 |
4.0 |
FAQ
1. Why do washers deform, break, or fail?
Common causes: Material is too soft or too hard, or does not match the operating conditions. Excessive force exceeding the load capacity. Uneven installation resulting in eccentric loading. Severe corrosion leading to reduced strength. Failure to use anti-loosening washers in vibrating environments. We can provide selection and installation recommendations.
2. What payment methods do you accept?
T/T (Wire Transfer): 30% deposit, 70% paid in full before shipment
3. What after-sales services do you offer?
- Replacement or refund for quality issues
- Free guidance on selection, matching, and installation
- Full tracking of order production and logistics
- Regular customers can reserve stock and enjoy long-term discounts
4. Can you customize non-standard washers?
Yes, we support comprehensive customization: dimensions, special materials and hardness, special surface treatments, and custom packaging. We can produce based on drawings and samples for confirmation before mass production.
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