At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 4161. ISO 4161 covers hexagon nuts with flange, style 2 (non-serrated or serrated bearing face), coarse thread, product grades A and B. The integral flange increases the bearing area and resists loosening. Sizes M5 to M20.
ISO 4161 covers hexagon nuts with flange, style 2 (non-serrated or serrated bearing face), coarse thread, product grades A and B. The integral flange increases the bearing area and resists loosening. Sizes M5 to M20.
Hexagon flange nut, style 2
Key dimensions for common sizes are listed below.
| Thread d | Width across flats s (mm) | Flange dia dc (mm) | Nut height m (mm) |
|---|---|---|---|
| M5 | 8 | 11.8 | 5.0 |
| M6 | 10 | 14.2 | 6.0 |
| M8 | 13 | 17.9 | 8.0 |
| M10 | 15 | 21.8 | 10.0 |
| M12 | 18 | 26.0 | 12.0 |
| M14 | 21 | 29.9 | 14.0 |
| M16 | 24 | 34.5 | 16.4 |
| M20 | 30 | 42.8 | 20.3 |
6H internal thread
[‘DIN 6923’, ‘ISO 4162’, ‘ISO 7043’, ‘ISO 7044’]
For the official ISO standards catalogue, see the ISO standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce ISO 4161 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.
ISO 4161 covers hexagon nuts with flange, style 2 (non-serrated or serrated bearing face), coarse thread, product grades A and B. The integral flange increases the bearing area and resists loosening. Sizes M5 to M20.
Ananka Fasteners manufactures ISO 4161 in sizes from M5–M20. See the Dimensional Table above for the complete size breakdown.
6H internal thread
We produce ISO 4161 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 ISO 4161 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: ISO 4161 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 4161 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
