At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 127 A/B. DIN 127 covers single-coil helical spring lock washers of rectangular cross-section. Form A has raised (bevelled) ends, Form B has square-cut ends. The sharp ends bite into the bearing surfaces to resist loosening from vibration.
DIN 127 covers single-coil helical spring lock washers of rectangular cross-section. Form A has raised (bevelled) ends, Form B has square-cut ends. The sharp ends bite into the bearing surfaces to resist loosening from vibration.
Helical (split) spring lock washer, rectangular section
Key dimensions for common sizes are listed below.
| Nominal Size | Inside Dia d1 (mm) | Outside Dia d2 (mm) | Width b (mm) | Thickness s (mm) |
|---|---|---|---|---|
| M3 | 3.1 | 6.2 | 1.3 | 0.8 |
| M4 | 4.1 | 7.6 | 1.5 | 0.9 |
| M5 | 5.1 | 9.2 | 1.8 | 1.2 |
| M6 | 6.1 | 11.8 | 2.5 | 1.6 |
| M8 | 8.2 | 14.8 | 3.0 | 2.0 |
| M10 | 10.2 | 18.1 | 3.5 | 2.2 |
| M12 | 12.2 | 21.1 | 4.0 | 2.5 |
| M16 | 16.2 | 27.4 | 5.0 | 3.5 |
| M20 | 20.2 | 33.6 | 6.0 | 4.0 |
N/A – spring lock washer
Related and equivalent standards include DIN 128 (curved spring washer), DIN 7980 (heavy spring washer), DIN 6905 and ISO 7090.
For the official DIN standards catalogue, see the DIN standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce DIN 127 A/B fasteners in carbon and alloy steel, austenitic and duplex stainless, and high-nickel, titanium and copper alloys — for structural, machinery and process applications worldwide.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
DIN 127 covers single-coil helical spring lock washers of rectangular cross-section. Form A has raised (bevelled) ends, Form B has square-cut ends. The sharp ends bite into the bearing surfaces to resist loosening from vibration.
Ananka Fasteners manufactures DIN 127 A/B in sizes from M3–M20. See the Dimensional Table above for the complete size breakdown.
N/A – spring lock washer
We produce DIN 127 A/B fasteners in carbon and alloy steel, austenitic and duplex stainless, and high-nickel, titanium and copper alloys — for structural, machinery and process applications worldwide.
Yes. For a quotation, provide the required nominal size, material grade, quantity and any inspection or certificate requirements.
Need a fastener manufactured to DIN 127 A/B for an industrial project? Send the required fastener type, size, material grade, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: DIN 127 A/B requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 127 A/B and industry references; provided for reference only — confirm against the current edition of the standard before design use.
