Spring Washer (DIN 127) Supplier
High-quality Carbon Steel Spring Washer (DIN 127). Split spring lock washer for anti-loosening. Size range M2-M48. Factory direct pricing with ISO 9001 certification.
Quick Specifications
Material
Carbon Steel
Type
Split spring lock washer
Size Range
M2–M48
Surface Finish
Plain / Zinc-plated / Black
Grade
Grade 65Mn
Product Overview
Spring washers (DIN 127) are split lock washers designed to prevent bolts and screws from loosening due to vibration. The split design creates a spring tension that maintains constant pressure on the fastened joint, ensuring reliable performance in dynamic loading conditions.
Our carbon steel spring washers are manufactured from high-quality 65Mn spring steel, heat-treated for optimal elasticity and durability. Available in sizes from M2 to M48, with plain, zinc plated, and black oxide surface finishes.
All products comply with international standards including DIN 127A, ISO 7090, and GB/T 93, ensuring reliable anti-loosening performance in demanding applications.
Dimensional Specifications
DIN 127 / ISO 7090 Standard – Carbon Steel Spring Washers
| Thread Size | Inner Dia. d (mm) | Outer Dia. D (mm) | Width b (mm) | Thickness s (mm) |
|---|---|---|---|---|
| M2 | 2.1 | 4.5 | 0.5 | 0.5 |
| M3 | 3.1 | 6.2 | 0.8 | 0.8 |
| M4 | 4.1 | 8.2 | 1.0 | 1.0 |
| M5 | 5.1 | 10.2 | 1.2 | 1.2 |
| M6 | 6.1 | 12.2 | 1.6 | 1.6 |
| M8 | 8.1 | 16.2 | 2.0 | 2.0 |
| M10 | 10.2 | 20.2 | 2.2 | 2.2 |
| M12 | 12.2 | 24.2 | 2.5 | 2.5 |
| M16 | 16.2 | 30.2 | 3.0 | 3.0 |
| M20 | 20.2 | 37.2 | 4.0 | 4.0 |
| M24 | 24.2 | 44.2 | 5.0 | 5.0 |
| M30 | 30.2 | 56.2 | 6.0 | 6.0 |
| M36 | 36.2 | 66.2 | 7.0 | 7.0 |
| M42 | 42.3 | 78.2 | 8.0 | 8.0 |
| M48 | 48.3 | 86.2 | 8.0 | 8.0 |
Material Grades & Mechanical Properties
Carbon Steel Spring Washers – Mechanical Properties
| Material | Hardness (HRC) | Tensile Strength (MPa) | Elastic Limit | Applications |
|---|---|---|---|---|
| 65Mn | 42-50 | 735-1000 | ≥600 MPa | General anti-loosening |
| 60Si2Mn | 44-52 | 900-1200 | ≥800 MPa | Heavy duty, high vibration |
| Stainless 304 | HRB 85-100 | 520-720 | ≥350 MPa | Corrosion resistant |
Surface Treatment Options
Choose the right finish for your application environment
Plain / Black Oxide
Natural finish or black oxide coating for indoor applications. Economical choice for dry environments where corrosion is not a concern.
- Cost-effective
- Indoor use only
- Dry environments
Zinc Plated
Electro-zinc coating providing moderate corrosion resistance. Suitable for general outdoor use and humid conditions.
- Moderate corrosion resistance
- General outdoor applications
- Good appearance
Phosphate Coated
Manganese or zinc phosphate coating for excellent oil retention and anti-corrosion properties. Ideal for painted or oiled assemblies.
- Excellent oil retention
- Good paint adhesion
- Anti-corrosion base
Applications
Construction Construction
Steel structures, bridges, vibration-prone joints
Machinery Machinery
Heavy equipment, rotating machinery, engines
Railway Railway
Track fastening, rolling stock, signaling equipment
Automotive Automotive
Engine mounts, suspension, chassis assemblies
Electrical Electrical
Panel mounting, transformer assemblies, bus bars
Industrial Industrial
Conveyors, pumps, compressors, gearboxes
Quality Assurance
ISO 9001 Certified
Strict quality management system
Material Certificates
EN 10204 3.1 certificates available
100% Inspection
Dimensional and visual inspection
Professional Packaging
Carton, bag, pallet options
Need Spring Washers (DIN 127)?
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