At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 12126. Prevailing-torque type ALL-METAL hexagon nuts with flange, metric FINE pitch thread, style 2, product grades A and B. Locking is achieved by a deformed (out-of-round) top section, no non-metallic insert. NOTE: source description (‘Hex Flange Nuts Heavy Series’) is incorrect – ISO 12126 is a prevailing-torque all-metal flange nut. Corrected here.
Prevailing-torque type ALL-METAL hexagon nuts with flange, metric FINE pitch thread, style 2, product grades A and B. Locking is achieved by a deformed (out-of-round) top section, no non-metallic insert. NOTE: source description (‘Hex Flange Nuts Heavy Series’) is incorrect – ISO 12126 is a prevailing-torque all-metal flange nut. Corrected here.
Prevailing-torque all-metal hexagon flange nut, fine pitch
Key dimensions for common sizes are listed below.
| Thread d x pitch | Width across flats s (mm) | Flange dia dc min (mm) | Height m (mm) |
|---|---|---|---|
| M8x1 | 13 | 17.9 | 9.8 |
| M10x1 | 15 | 21.8 | 11.9 |
| M12x1.5 | 18 | 26.0 | 14.2 |
| M14x1.5 | 21 | 29.9 | 16.2 |
| M16x1.5 | 24 | 34.5 | 18.6 |
| M18x1.5 | 27 | 39.9 | 20.6 |
| M20x1.5 | 30 | 42.8 | 23.0 |
Metric fine pitch thread, tolerance class 6H; prevailing-torque performance per ISO 2320
[‘ISO 7044’, ‘ISO 10663’, ‘DIN 6927’, ‘EN 1664’]
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 12126 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.
Prevailing-torque type ALL-METAL hexagon nuts with flange, metric FINE pitch thread, style 2, product grades A and B. Locking is achieved by a deformed (out-of-round) top section, no non-metallic insert. NOTE: source description (‘Hex Flange Nuts Heavy Series’) is incorrect – ISO 12126 is a prevailing-torque all-metal flange nut. Corrected here.
Ananka Fasteners manufactures ISO 12126 in sizes from M8x1–M20x1.5. See the Dimensional Table above for the complete size breakdown.
Metric fine pitch thread, tolerance class 6H; prevailing-torque performance per ISO 2320
We produce ISO 12126 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 12126 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 12126 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 12126 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
