Spring Washers
What are Spring Washers
Spring washers, also known as disc springs, are resilient fasteners designed to provide preload between two surfaces and absorb shock, vibration, and thermal expansion. These washers are ideal for applications where bolted joints are subject to dynamic loads, ensuring a secure and tight assembly over time. Their curved or conical shape allows them to exert continuous pressure, preventing loosening and improving load distribution.
Spring washers are commonly used in electrical equipment, automotive assemblies, heavy machinery, and mechanical joints for added reliability and safety.
Key Features
- Resilient Design – Maintains tension and absorbs vibrations.
- Prevents Loosening – Helps retain fastener tension under dynamic conditions.
- Material Variety – Available in stainless steel, carbon steel, and alloy steel.
- Corrosion-Resistant Options – Ideal for harsh environments and outdoor installations.
- Wide Range of Sizes – Suitable for bolts and screws of various diameters.
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | M3 to M72 |
| Types | Curved, Conical (Belleville), Slotted, Serrated |
| Manufacturing Methods | Cold Formed, Stamped |
| Material Options | Stainless Steel, Carbon Steel, Alloy Steel |
| Standards | DIN 127, DIN 6796, ISO 8752, ASME B18.21.1 |
| Finishes Available | Zinc Plated, Black Oxide, Phosphate Coated, Plain |
| Property | Value |
|---|---|
| Load Capacity | Up to 30,000 N (type-dependent) |
| Hardness | 200 – 500 HV |
| Fatigue Resistance | High (depends on grade/design) |
| Temp. Range | -50°C to 250°C (material-dependent) |
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.45 – 0.55 |
| Manganese (Mn) | 0.60 – 1.00 |
| Silicon (Si) | 0.10 – 0.35 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Chromium (Cr)* | 16.00 – 18.00 (SS grades) |
| Nickel (Ni)* | 8.00 – 10.00 (SS grades) |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A240 (SS), AISI 304/316 |
| DIN | 127, 6796 |
| ISO | 8752 |
| JIS | G4310 |
| BS | 4464 |
| Washer Size (mm) | Thickness (mm) | Approx. Weight (kg/1000 pcs) |
|---|---|---|
| M6 | 1.6 | 0.40 |
| M8 | 2.0 | 0.75 |
| M10 | 2.2 | 1.10 |
| M12 | 2.5 | 1.65 |
| M16 | 2.8 | 2.90 |
| M20 | 3.0 | 4.50 |
Applications of Spring Washers
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is a spring washer used for?
Spring washers are used to maintain tension, absorb vibration, and prevent loosening of fasteners in bolted assemblies.
Are stainless steel spring washers rust-proof?
Yes, stainless steel spring washers offer excellent corrosion resistance, making them ideal for outdoor or marine applications.
Which type of spring washer is suitable for high-load conditions?
Belleville or conical spring washers are best suited for high-load and heavy-duty applications.
Can I request custom sizes or coatings?
Absolutely. We offer spring washers in custom sizes, thicknesses, and finishes as per your project requirements.
