DIN7349 Plain Washer with Heavy Clamping Sleeve
DIN7349 plain washer with heavy clamping sleeve is a specialized fastening component designed for high-load bolted connections, spacing applications, and mechanical assemblies requiring increased support and precise positioning. The DIN7349 plain washer with heavy clamping sleeve combines a thick washer structure with a robust sleeve design, providing improved load distribution, enhanced stability, and reliable clamping performance.
Manufactured from high-strength materials such as carbon steel or stainless steel, the DIN7349 plain washer with heavy clamping sleeve is widely used in vibration-resistant assemblies, machinery fixtures, construction equipment, and industrial fastening systems where standard washers cannot meet load and alignment requirements.

Product Overview
The DIN7349 plain washer with heavy clamping sleeve is engineered for applications requiring both load support and component spacing. The thick washer body distributes tightening forces over a larger contact area, while the integrated heavy clamping sleeve helps maintain accurate spacing between connected components.
Compared with standard flat washers, the DIN7349 plain washer with heavy clamping sleeve provides improved resistance to deformation under high clamping pressure. It is especially suitable for assemblies involving rubber elements, brackets, mounting systems, and structural components.
As a reliable industrial fastener accessory, it is commonly supplied to OEM manufacturers, machinery builders, automotive equipment suppliers, and engineering contractors.

Product Specifications
| Item | Description |
|---|---|
| Standard | DIN7349 |
| Product Name | DIN7349 Plain Washer with Heavy Clamping Sleeve |
| Material | Carbon Steel / Stainless Steel |
| Washer Type | Plain Washer with Heavy Clamping Sleeve |
| Structure | Thick Washer with Integrated Sleeve |
| Size Range | M5–M30 |
| Inner Diameter | According to DIN7349 Standard |
| Outer Diameter | According to DIN7349 Standard |
| Sleeve Height | According to Standard or Drawing |
| Surface Finish | Plain / Black Oxide / Zinc Plated / Stainless Finish |
| Installation Type | Bolt and Sleeve Assembly |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Size, material, sleeve dimensions available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material | Carbon Steel / Stainless Steel |
| Tensile Strength | According to selected material grade |
| Yield Strength | According to selected material grade |
| Hardness | Controlled according to requirement |
| Density | Steel Approx. 7.85 g/cm³ |
| Load Capacity | High clamping support performance |
| Wear Resistance | Good mechanical durability |
| Corrosion Resistance | Depends on material and surface treatment |
| Manufacturing Standard | DIN7349 |
Materials and Manufacturing Process
The DIN7349 plain washer with heavy clamping sleeve is manufactured through precision metal forming and machining processes to ensure accurate dimensions and reliable performance.
- Raw material selection: High-quality steel or stainless steel materials
- Cutting and forming: Precision forming of washer and sleeve structure
- Machining process: Ensures accurate inner diameter and sleeve dimensions
- Heat treatment: Applied when required to improve strength and wear resistance
- Surface finishing: Black oxide, zinc plating, or stainless steel finishing
- Deburring: Removes sharp edges for safe installation
- Inspection: Dimensional accuracy, sleeve height, and surface quality testing
- Packaging: Protective industrial packaging for transportation
Each DIN7349 plain washer with heavy clamping sleeve is produced under strict quality control to ensure consistent assembly performance.
Applications of the Product
The DIN7349 plain washer with heavy clamping sleeve is widely used across multiple industries:
- Automotive equipment: Suspension and structural fastening systems
- Machinery manufacturing: Heavy-duty mechanical assemblies
- Construction equipment: High-load connection points
- Agricultural machinery: Vibration-resistant fastening applications
- Industrial fixtures: Positioning and support systems
- Machine tools: Clamping and mounting structures
- Engineering equipment: Structural component connections
- Manufacturing systems: Precision assembly applications
Its sleeve structure provides additional support where spacing control and high clamping force are required.
Why Choose This Product
- DIN7349 standard compatibility
- Heavy-duty load distribution capability
- Integrated sleeve improves positioning accuracy
- Reduces deformation under high pressure
- Suitable for vibration environments
- Available in multiple material options
- Reliable performance in industrial assemblies
- Custom dimensions available
- OEM production support
The DIN7349 plain washer with heavy clamping sleeve provides a durable solution for demanding fastening and spacing applications.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Advanced metal forming and machining capability
- Custom washer and sleeve production experience
- OEM/ODM support for industrial customers
- Stable production capacity for bulk supply
- Strict quality inspection procedures
- Global export experience
- Engineering support for customized requirements
Flybear provides reliable fastening products for distributors, OEM manufacturers, and industrial customers worldwide.
Quality Inspection and Control
Quality control is maintained throughout the manufacturing process:
- Raw material chemical composition analysis
- Material certificate verification
- Inner diameter and outer diameter inspection
- Sleeve height measurement
- Thickness inspection
- Surface treatment inspection
- Dimensional tolerance verification
- Packaging quality inspection
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting a DIN7349 plain washer with heavy clamping sleeve, consider:
- Bolt size compatibility
- Required clamping load
- Sleeve height and spacing requirements
- Material compatibility
- Operating environment
- Corrosion exposure conditions
Correct selection ensures stable fastening performance and reliable assembly life.
FAQ
1. What is DIN7349 plain washer with heavy clamping sleeve used for?
It is used for high-load fastening, spacing, and support applications in mechanical assemblies.
2. What is the function of the heavy clamping sleeve?
The sleeve maintains spacing, improves alignment, and supports higher clamping forces.
3. What materials are available for DIN7349 washers?
Common materials include carbon steel and stainless steel.
4. Can surface treatment be customized?
Yes, options such as zinc plating, black oxide, and stainless finishes are available.
5. Can custom DIN7349 washer sizes be produced?
Yes, Flybear supports customized dimensions and special 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.
Contact us for quotation, customization, and technical support via Contact Us.




