At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 6921. DIN 6921 specifies hexagon head bolts/screws with an integral flange (collar) that spreads the clamp load over a larger bearing area, eliminating the need for a separate washer. Available with a plain or serrated (ribbed) flange underside for extra vibration resistance. Common property classes 8.8, 10.9 and stainless A2/A4.
DIN 6921 specifies hexagon head bolts/screws with an integral flange (collar) that spreads the clamp load over a larger bearing area, eliminating the need for a separate washer. Available with a plain or serrated (ribbed) flange underside for extra vibration resistance. Common property classes 8.8, 10.9 and stainless A2/A4.
Hexagon flange bolt (integral washer face)
Key dimensions for common sizes are listed below.
| Thread size d | Pitch P (mm) | Width across flats s (mm) | Flange diameter dc (mm) | Head height k (mm) |
|---|---|---|---|---|
| M5 | 0.8 | 8 | 11.8 | 6.2 |
| M6 | 1.0 | 10 | 14.2 | 7.3 |
| M8 | 1.25 | 13 | 17.9 | 9.4 |
| M10 | 1.5 | 15 | 21.8 | 11.4 |
| M12 | 1.75 | 18 | 26.0 | 13.8 |
| M14 | 2.0 | 21 | 29.9 | 15.9 |
| M16 | 2.0 | 24 | 34.5 | 18.3 |
6g
[‘ISO 4162’, ‘DIN EN 1665’, ‘DIN 6922’]
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 6921 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 6921 specifies hexagon head bolts/screws with an integral flange (collar) that spreads the clamp load over a larger bearing area, eliminating the need for a separate washer. Available with a plain or serrated (ribbed) flange underside for extra vibration resistance. Common property classes 8.8, 10.9 and stainless A2/A4.
Ananka Fasteners manufactures DIN 6921 in sizes from M5–M16. See the Dimensional Table above for the complete size breakdown.
6g
We produce DIN 6921 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 6921 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 6921 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 6921 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
