Washers
What are Washers?
Washers are flat, disc-shaped components placed between fasteners (like nuts or bolts) and surfaces to distribute load, reduce vibration, and prevent damage to connected materials. They are crucial in maintaining joint integrity under load, pressure, or thermal expansion. Washers come in multiple types including plain, spring, wave, and sealing washers, and are made from metals like steel, brass, copper, and alloys.
Key Features
- Load Distribution – Spreads clamping force over a wider area.
- Vibration Damping – Reduces loosening in dynamic assemblies.
- Material Versatility – Available in carbon steel, brass, aluminum, etc.
- Precision Machined – Manufactured to tight tolerances.
- Multiple Types – For mechanical support, sealing, or tension control.
Types of Washers
- Flat Washers
- Spring Washers
- Lock Washers
- Wave Washers
- Belleville Washers
- Sealing Washers
- Countersunk Washers
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Size Range | M2 to M64 |
| Thickness | 0.5 mm to 6 mm |
| Standards | DIN 125 / 127 / 7980 / 6796, ISO, ASTM |
| Material Options | Steel, Brass, Copper, Alloy Steel |
| Finishes | Zinc Plated, Black Oxide, Nickel, Dacromet |
| Property | Value |
|---|---|
| Hardness | 100 – 300 HB |
| Yield Strength | 250 – 900 MPa |
| Elastic Recovery | Good (spring types) |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.10 – 0.50 |
| Manganese (Mn) | 0.60 – 1.20 |
| Silicon (Si) | 0.10 – 0.35 |
| Chromium (Cr) | 18.0 – 20.0 (SS Only) |
| Nickel (Ni) | 8.0 – 10.5 (SS Only) |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| DIN | 125 / 127 / 7980 |
| ASTM | F436 / F959 |
| ISO | 7089 / 7090 |
| Size | Type | Weight (kg) |
|---|---|---|
| M6 (1.6 mm thick) | Flat Washer | 0.40 |
| M8 (2 mm thick) | Spring Washer | 0.75 |
| M12 (2.5 mm thick) | Lock Washer | 2.10 |
Applications of Washers
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the purpose of a spring washer?
Spring washers maintain tension and resist loosening caused by vibration or dynamic loads.
Can washers be ordered with custom dimensions?
Yes, we manufacture washers in non-standard OD/ID and thickness as per customer specifications.
Which washers are suitable for sealing?
Sealing washers, often with rubber or bonded seals, are used to prevent leakage in plumbing or fluid systems.
Are your washers compliant with international standards?
Yes, we follow DIN, ISO, ASTM, and other global standards for consistent quality and fit.
