Overview
A Coil Washer is a specialized type of spring washer designed to provide reliable tension and prevent loosening in bolted assemblies. Its helical shape allows it to exert a continuous axial force when compressed, maintaining the integrity of the joint under vibration and dynamic loads. Manufactured through precision coiling of high-grade steel wire, the Coil Washer undergoes heat treatment processes to enhance its mechanical properties, including tensile strength and fatigue resistance. The design ensures uniform load distribution and effective locking action, making it suitable for applications requiring secure fastening in automotive, aerospace, and heavy machinery sectors. The Coil Washer’s ability to absorb shock and compensate for thermal expansion contributes to its widespread use in critical industrial environments.
Constructed from materials such as stainless steel, carbon steel, and alloy steel, the Coil Washer offers excellent corrosion resistance and durability, ensuring long service life even in harsh conditions. Its performance is characterized by consistent spring force and dimensional stability, which are essential for maintaining joint tension over time. The Coil Washer is commonly employed in assemblies where loosening due to vibration or thermal cycling is a concern, providing a cost-effective solution to enhance safety and reliability. Its compact design and ease of installation further add to its advantages, making the Coil Washer a preferred choice for engineers seeking dependable fastening components in demanding industrial applications.
| Product Type | Coil Washer |
| Head Style | Helical Spring |
| Manufacturing Process | Cold Formed and Coiled |
| Thread Type | Not Applicable |
| Common Materials | Spring Steel, Stainless Steel, Carbon Steel |
| Available Sizes | Standard diameters from M2 to M24 and inch sizes from #4 to 1 inch |
| Strength Features | High tensile strength with excellent load distribution and vibration resistance |
| Typical Applications | Used to prevent loosening of fasteners due to vibration and shock in machinery and automotive assemblies |
| Surface Finishes | Zinc Plated, Phosphate Coated, Plain, Passivated |
| Standards | DIN 127, ISO 7089, ANSI B18.21.1 |
| Customization | Custom Sizes, Materials, Threads & Surface Finishes Available |
Effectively prevents loosening in vibrating environments by maintaining tension in bolted joints.
Available in stainless steel and coated materials for enhanced resistance against rust and corrosion.
Designed to provide consistent spring force, absorbing shocks and maintaining joint integrity.
Offered in multiple diameters and thicknesses to suit diverse fastening requirements.
Manufactured using high-quality materials ensuring long service life under harsh conditions.
Produced according to DIN and ISO standards for reliable and consistent quality.
| Product Type | Helical Spring Washer |
| Thread Type | Compatible with Metric Threads |
| Diameter Range | M3 to M36 |
| Length Range | 5 to 50 mm |
| Available Materials | Stainless Steel, Carbon Steel, Alloy Steel |
| Manufacturing Standards | DIN 127, ISO 13918 |
| Surface Finish | Plain, Zinc Plated, Passivated |
| Diameter (mm) | Thickness (mm) | Outer Diameter (mm) |
|---|---|---|
| M3 | 0.5 | 6.4 |
| M6 | 1.6 | 12 |
| M12 | 2.5 | 21 |
| M24 | 4.0 | 42 |
