At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 125 A/B. DIN 125 covers plain (flat) round washers for use under bolt heads and nuts to distribute load and protect surfaces. Form A has plain edges; Form B has a chamfered outer edge. Nominal bore, outer diameter and thickness are identical for both forms; superseded by ISO 7089/7090.
DIN 125 covers plain (flat) round washers for use under bolt heads and nuts to distribute load and protect surfaces. Form A has plain edges; Form B has a chamfered outer edge. Nominal bore, outer diameter and thickness are identical for both forms; superseded by ISO 7089/7090.
Plain flat washer (Form A plain edge / Form B chamfered)
Key dimensions for common sizes are listed below.
| Nominal Size | Inside Dia d1 (mm) | Outside Dia d2 (mm) | Thickness s (mm) |
|---|---|---|---|
| M3 | 3.2 | 7 | 0.5 |
| M4 | 4.3 | 9 | 0.8 |
| M5 | 5.3 | 10 | 1.0 |
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M10 | 10.5 | 20 | 2.0 |
| M12 | 13 | 24 | 2.5 |
| M14 | 15 | 28 | 2.5 |
| M16 | 17 | 30 | 3.0 |
| M18 | 19 | 34 | 3.0 |
| M20 | 21 | 37 | 3.0 |
N/A – plain washer
Related and equivalent standards include ISO 7089, ISO 7090, DIN 126 (large tolerance) and DIN 433 (small OD).
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 125 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 125 covers plain (flat) round washers for use under bolt heads and nuts to distribute load and protect surfaces. Form A has plain edges; Form B has a chamfered outer edge. Nominal bore, outer diameter and thickness are identical for both forms; superseded by ISO 7089/7090.
Ananka Fasteners manufactures DIN 125 A/B in sizes from M3–M20. See the Dimensional Table above for the complete size breakdown.
N/A – plain washer
We produce DIN 125 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 125 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 125 A/B requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 125 A/B and industry references; provided for reference only — confirm against the current edition of the standard before design use.
