At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 7989. DIN 7989 specifies thick plain washers for steel structures (steel construction / structural bolting), used with high-strength structural bolt assemblies. Characteristic feature is a constant nominal thickness of 8 mm (tolerance approx. +/-1 mm) across the size range. Split into DIN 7989-1 (hardened) and DIN 7989-2 (grade A).
DIN 7989 specifies thick plain washers for steel structures (steel construction / structural bolting), used with high-strength structural bolt assemblies. Characteristic feature is a constant nominal thickness of 8 mm (tolerance approx. +/-1 mm) across the size range. Split into DIN 7989-1 (hardened) and DIN 7989-2 (grade A).
Thick plain washer for structural steelwork
Key dimensions for common sizes are listed below.
| For bolt | Inside diameter d1 (mm) | Outside diameter d2 (mm) | Thickness s (mm) |
|---|---|---|---|
| M12 | 13.5 | 24 | 8 |
| M16 | 17.5 | 30 | 8 |
| M20 | 22 | 37 | 8 |
| M24 | 26 | 44 | 8 |
| M27 | 30 | 50 | 8 |
| M30 | 33 | 56 | 8 |
| M33 | 36 | 60 | 8 |
| M36 | 39 | 66 | 8 |
N/A (washer)
[‘DIN 7349’, ‘DIN 6916’, ‘ISO 7415’, ‘EN 14399-6’]
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 7989 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 7989 specifies thick plain washers for steel structures (steel construction / structural bolting), used with high-strength structural bolt assemblies. Characteristic feature is a constant nominal thickness of 8 mm (tolerance approx. +/-1 mm) across the size range. Split into DIN 7989-1 (hardened) and DIN 7989-2 (grade A).
Ananka Fasteners manufactures DIN 7989 in sizes from M12–M36. See the Dimensional Table above for the complete size breakdown.
N/A (washer)
We produce DIN 7989 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 7989 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 7989 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 7989 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
