SS Large Plain Washers DIN9021
SS Large Plain Washers DIN9021 are essential components in mechanical assemblies, offering increased load distribution and protection against surface damage. These washers are manufactured with precision to meet DIN9021 standards, ensuring optimal performance in various applications across industries such as construction, automotive, electronics, and machinery. Their flat, wide design provides better load distribution compared to standard washers, making them especially effective when used with soft materials or oversized holes.
At Flybear Fastener, we specialize in manufacturing and supplying SS Large Plain Washers DIN9021 with strict quality control and extensive customization options.
Product Overview
SS Large Plain Washers DIN9021 are flat washers with a larger outer diameter compared to other standard washers. Made from high-quality stainless steel, these washers prevent surface damage and distribute force at fastening joints. They are widely used to increase the bearing surface under nuts, screw or bolt heads.
Product Specifications
| Property | Value |
|---|---|
| Product Name | SS Large Plain Washer |
| Standard | DIN 9021 |
| Material | Stainless Steel (A2-70 / A4-80), Carbon Steel |
| Size Range | M3 to M36 |
| Thickness | As per DIN9021 standard |
| Surface Finish | Plain, Hot-Dip Galvanized, Black Oxide |
| Outer Diameter | Approx. 3x hole diameter |
| Inner Diameter | Matches bolt size |
Technical Data Sheet
| Size | Inner Dia. (mm) | Outer Dia. (mm) | Thickness (mm) |
|---|---|---|---|
| M6 | 6.4 | 18.0 | 1.6 |
| M8 | 8.4 | 24.0 | 2.0 |
| M10 | 10.5 | 30.0 | 2.5 |
| M12 | 13.0 | 37.0 | 3.0 |
| M16 | 17.0 | 44.0 | 3.0 |
(Custom sizes available upon request.)
Material Details & Manufacturing Process
Our SS Large Plain Washers DIN9021 are made from premium grade stainless steel A2 and A4 series, ensuring high resistance to corrosion, heat, and mechanical stress. The production process includes:
- Raw material inspection and certification
- CNC stamping for high precision
- Deburring and edge finishing
- Surface treatment (such as passivation, galvanization, or blackening)
- Final quality inspection and packaging
This highly controlled workflow ensures washers with consistent flatness, concentricity, and mechanical integrity.
Typical Applications in Key Industries
These plain washers are commonly used in the following areas:
- Automotive assembly lines
- Railway infrastructure maintenance
- Electrical circuits and panels
- Steel structural works
- Marine engineering constructions
- Wood and composite material fastenings
They serve as a protective buffer and prevent galling between fastened surfaces.
Advantages and Competitive Strengths
Core Benefits of SS Large Plain Washers DIN9021
- Material Superiority: Our washers are made from top-grade stainless steel, providing exceptional rust- and corrosion-resistance.
- Precision Engineering: Excellent concentricity and tight tolerance ensure a perfect fit for fastening assemblies.
- Advanced Finishes: Zinc plating and hot-dip galvanization offer enhanced durability for outdoor and corrosive environments.
- Customization: We offer OEM/ODM services for washer design, stamping, branding, and packaging.
- Large-Scale Inventory: Rapid fulfillment with ready-stocked sizes and common variants.
- Outstanding Support: Backed by technical consultation and reliable post-sales services.
Company Inspection & Quality Control
At Flybear Fastener, quality is our top priority. We follow internationally recognized standards to maintain high product integrity including:
- Dimensional inspections using go/no-go gauges
- Salt spray tests for surface coatings
- Hardness and tensile load tests
- 100% visual inspection for critical batches
- Certification as per EN, DIN, ISO standards
We proudly maintain ISO 9001:2015-compliant QA processes, ensuring consistency from batch to batch.
SS Large Plain Washer Selection Guide
When choosing the right washer, consider:
- Material: For corrosion-prone environments, select A4-80 stainless steel.
- Size Compatibility: Match washer ID with bolt size; ensure OD is large enough for load distribution.
- Coating Needs: Use galvanized or black oxide surface for UV resistance or aesthetic appeal.
- Load and Environment: Understand mechanical load and exposure conditions to select optimal thickness and finish.
Email our engineering team or check our sizing chart for more detailed guidance.
Conclusion & Company Highlights
At Flybear Fastener, we are not just a supplier — we are your partner in designing and manufacturing durable, high-performance fastener products. We offer engineered solutions tailored to your application requirements.
With a reputation for precision, reliability, and cost-efficiency, Flybear Fastener stands out as your trusted partner. Whether you need bulk orders or one-off customized components, we ensure timely delivery and full technical support.
Contact our team to explore your industrial fastening needs today and get a competitive quote by clicking contact us now!
We always uphold the philosophy of “Quality First, Customer-Centered”, and are committed to providing our customers with high-quality fastener products and one-stop fastening solutions.
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