Quick Difference
Short answer: do not assume interchangeability from the standard name alone. DIN 125A remains a common buyer and search designation. The formal standard verified as withdrawn is DIN 125-1:1990-03; DIN Media lists DIN EN ISO 7089:2000-11 and DIN EN ISO 7090:2000-11 as its replacement standards. This replacement record alone does not establish item-level interchangeability. Confirm the washer form, dimensions, tolerances, hardness class, material and finish before ordering. ISO 7089 defines 200 HV and 300 HV hardness classes.
DIN 125A and ISO 7089 are both common flat washer references used by overseas buyers. In RFQ work, the most important point is not the name alone; it is the exact size, material, finish, hardness target if required, packing and destination. DJ WASHERS keeps DIN 125A as the customer-facing wording because many buyers still search and quote this standard directly.
| Item | DIN 125A | ISO 7089 |
|---|---|---|
| Washer type | Metric flat washer | Metric flat washer |
| Standard status | Buyer designation; formal DIN 125-1:1990-03 withdrawn — replaced by DIN EN ISO 7089 / ISO 7090 | Current ISO standard (200 HV / 300 HV classes) |
| Typical buying use | Maintenance, machinery, general fastening | International metric flat washer RFQs |
| Material options | Carbon steel by RFQ | Carbon steel by RFQ |
| Finish options | Plain, black oxide, zinc, hot-dip galvanized, zinc-aluminum by order | Plain, black oxide, zinc, hot-dip galvanized, zinc-aluminum by order |
When To Quote DIN 125A
Use DIN 125A when the drawing, historical purchase record, maintenance list or project specification already names DIN 125A. It is also useful for buyers who purchase by long-standing DIN descriptions and need carbon steel washer production with export packing.
When To Quote ISO 7089
Use ISO 7089 when the buyer or project uses ISO metric references. If the inquiry includes both DIN and ISO names, send the exact washer dimensions or drawing so the sales and production team can confirm the closest manufacturing reference.
RFQ Data To Send
- Standard name: DIN 125A, ISO 7089 or both.
- Size range and required quantities.
- Material and surface finish.
- Packing: carton weight, pallet loading, label and destination.
- Any special tolerance, drawing or sample photo.
For large outside diameter washers, buyers should also review DIN 9021. For square bearing washers, use DIN 436 or DIN 434 square washer RFQs.
FAQ
Is DIN 125A the same as ISO 7089?
DIN 125A remains a common buyer and search designation. The formal standard verified as withdrawn is DIN 125-1:1990-03; DIN Media lists DIN EN ISO 7089:2000-11 and DIN EN ISO 7090:2000-11 as its replacement standards. This replacement record alone does not establish item-level interchangeability. Confirm the washer form, dimensions, tolerances, hardness class, material and finish before ordering. ISO 7089 defines 200 HV and 300 HV hardness classes.
Can DJ WASHERS supply both DIN 125A and ISO 7089?
Yes. DJ WASHERS lists DIN 125A and ISO 7089 flat washers and confirms material, finish, packing and quantity by RFQ.
What should I send for a flat washer quote?
Send standard, size, material, finish, quantity, packing requirement and destination country or region.