A spring washer, also known as a conical disc spring washer, is a conical-shaped elastic metal washer that functions as a mechanical spring. When compressed, it generates axial force and maintains preload stability in mechanical assemblies.
It is widely used in hinge systems, torque control mechanisms, electrical assemblies, and precision rotating joints.
Reference:Wikipedia
When the washer is compressed by a nut and shaft system, its conical shape flattens gradually, generating controlled elastic force. This force directly contributes to torque stability in hinge and rotating systems.
Outer shape: Circular structure ensures uniform load distribution
Inner hole: Available in round or square design
Arch height: Determines torque strength and elastic range
Surface accuracy: Impacts fatigue life and long-term stability
Square inner holes provide better torque transmission, while round inner holes offer easier assembly.
| Item | Specification |
|---|---|
| Material | 65Mn / SK5 / SK7 / Stainless Steel |
| Hardness | HRC 38–50 (heat treated) |
| Surface Treatment | Zinc / Nickel / Black oxide / Dacromet |
| Outer Diameter | 3mm – 50mm (custom available) |
| Inner Diameter | Round / Square / Custom |
| Thickness | 0.2mm – 2.5mm |
| Function | Torque generation, vibration resistance, preload retention |
Hinge systems: Laptop hinges, monitor stands, folding devices
Shaft assemblies: Rotary shafts, torque shafts, mechanical joints
Automotive: Interior adjustment systems, brackets
Electronics: Adjustable mounts, POS systems
Industrial equipment: Anti-vibration fastening systems
| Type | Advantages | Limitations |
|---|---|---|
| Round Hole | Easy assembly, no direction requirement | Slightly lower torque transfer |
| Square Hole | Higher torque transmission | Requires directional installation |
Outer/inner diameter precision
Coaxiality and symmetry
Arch height consistency
Surface hardness uniformity
Fatigue resistance under cyclic load
Poor dimensional control may cause torque instability and reduced service life in hinge systems.
It provides controlled axial force and maintains preload stability in mechanical assemblies.
It is widely used in hinge systems, torque joints, and precision mechanical structures.
65Mn, SK5, SK7 spring steel with heat treatment for high fatigue resistance.
Round holes are easier to assemble, square holes provide better torque transmission.
Yes, stacking changes load and elasticity characteristics.
We are a professional OEM manufacturer of precision spring washers, offering stable quality, custom engineering support, and global export experience.
Official website: www.mengpengparts.com
| Specification | Details |
| Outer Diameter (OD) | 1.7–28 mm |
| Inner Diameter (ID) | 0.83–20.5 mm |
| Thickness | 0.15–2.0 mm |
| Material | 65Mn / SK5 / SK7 |
| HRC | 43–50 |
Surface Treatment | Eco-friendly nickel, electroless nickel, blackening, zinc-nickel alloy |
Function | Generates torque within the shaft, significantly impacting its service life. |
Make it easy for customers to make shafts and apply them to more fields.
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