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RS PRO Copper Plain Crinkle Locking & Anti-Vibration Washer M2.5 BS 4463 289-641
Specifications
| Country of Origin | United Kingdom |
|---|---|
| Brand | RS PRO |
| Material | Copper |
| Grade | A2 |
| THICKNESS | 0.16mm |
| Model | 289-641 |
| Finish | Plain |
| External diameter | 5.71mm |
| Inside Diameter | 2.75mm |
| Washer type | Crinkle |
| Standards/Approvals | BS 4463 |
| Compatible Screw/Bolt Size | M2.5 |
| RS PRO Copper Plain Crinkle Locking & Anti-Vibration Washer, M3, BS 4463Brand | RS PRO |
Key Features
- Constructed from high-quality copper for excellent conductivity and durability.
- Crinkle-type design provides effective locking and anti-vibration performance.
- Compatible with M2.5 screw and bolt sizes commonly used in industrial assemblies.
- Meets BS 4463 standards ensuring reliability in demanding environments.
- Features a plain finish with precise 5.71 mm external and 2.75 mm internal diameters.
- Ideal for electrical, mechanical, and fluid power fastening where vibration mitigation is needed.
- Grade A2 specification enhances mechanical strength and corrosion protection.
Product Description
RS PRO 289-641 Copper Plain Crinkle Locking & Anti-Vibration Washer M2.5 is a specialty fastener engineered for industrial, electrical, and fluid power assemblies requiring robust vibration resistance. Manufactured from beryllium copper, this washer delivers superior mechanical integrity and electrical conductivity, making it an optimal solution in applications such as control panels, machinery, electrical mounting, and fluid interfaces.
The crinkle locking design ensures a secure fit, prevents loosening under vibration, and distributes load effectively. The plain finish maintains compatibility with sensitive surfaces, while the precise M2.5 sizing allows for universal integration with M2.5 screws and bolts across multiple industries.
Compliant with BS 4463, this washer meets rigorous standards for anti-vibration performance and long-term durability. With an external diameter of 5.71 mm, internal diameter of 2.75 mm, and a thickness of 0.16 mm, the RS PRO 289-641 washer is dimensionally optimized for precision assemblies.
Typical applications include electrical enclosures, mechanical joints, valve assemblies, pump fittings, and instrumentation panels where insulating properties and vibration resistance are required. The copper material also provides a suitable path for grounding and EMI mitigation.
As part of the RS PRO range, customers are assured of global standardization, robust build quality, and dependable performance in industrial environments. For more RS PRO washers and fasteners, browse the Industrial Fasteners category to explore compatible options.
Explore more products in our Lock Washers category.
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Frequently Asked Questions
This locking washer is constructed from copper, which provides excellent conductivity and durability.
The external diameter of this washer is 5.71 mm.
The internal diameter of this washer is 2.75 mm.
The thickness of this locking washer is 0.16 mm.
This washer is compatible with M2.5 screw and bolt sizes, commonly used in industrial assemblies.
This washer meets BS 4463 standards, ensuring reliability in demanding environments.
This washer features a crinkle-type design that provides effective locking and anti-vibration performance.
Typical applications include electrical enclosures, mechanical joints, valve assemblies, pump fittings, and instrumentation panels.
This washer has a Grade A2 specification, enhancing its mechanical strength and corrosion protection.
This washer is manufactured in the United Kingdom.
The washer has a plain finish, which maintains compatibility with sensitive surfaces.
The crinkle locking design ensures a secure fit, prevents loosening under vibration, and distributes load effectively.
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