At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 7980. DIN 7980 specifies single-coil spring lock washers with a square cross-section, primarily for use under cylinder/cheese head (socket cap) screws where a heavier spring section than DIN 127 is wanted. Provides vibration/loosening resistance by spring tension and end bite.
DIN 7980 specifies single-coil spring lock washers with a square cross-section, primarily for use under cylinder/cheese head (socket cap) screws where a heavier spring section than DIN 127 is wanted. Provides vibration/loosening resistance by spring tension and end bite.
Square-section single-coil spring lock washer
Key dimensions for common sizes are listed below.
| For thread d | Inside diameter d1 min (mm) | Outside diameter d2 max (mm) | Section s (mm) |
|---|---|---|---|
| M3 | 3.1 | 5.6 | 1.0 |
| M4 | 4.1 | 7.0 | 1.2 |
| M5 | 5.1 | 8.8 | 1.6 |
| M6 | 6.1 | 9.9 | 1.6 |
| M8 | 8.1 | 12.7 | 2.0 |
| M10 | 10.2 | 16.0 | 2.5 |
| M12 | 12.2 | 18.0 | 2.5 |
| M14 | 14.2 | 21.1 | 3.0 |
| M16 | 16.2 | 24.4 | 3.5 |
| M20 | 20.2 | 30.6 | 4.5 |
N/A (washer)
[‘DIN 127’, ‘DIN 128’, ‘DIN 7981’]
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 7980 fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, 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 7980 specifies single-coil spring lock washers with a square cross-section, primarily for use under cylinder/cheese head (socket cap) screws where a heavier spring section than DIN 127 is wanted. Provides vibration/loosening resistance by spring tension and end bite.
Ananka Fasteners manufactures DIN 7980 in sizes from M3–M20. See the Dimensional Table above for the complete size breakdown.
N/A (washer)
We produce DIN 7980 fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, 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 7980 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 7980 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 7980 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
