At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 12125. Prevailing torque type hexagon nuts WITH FLANGE (with non-metallic/nylon insert), metric FINE pitch thread, style 2, product grades A and B, property classes. Input record was materially wrong: it labelled ISO 12125 as ‘Hex Flange Bolts Heavy Series’ under Flange Bolts. Per ISO, ISO 12125 is a flanged prevailing-torque NUT (fine pitch), not a bolt – category corrected from Flange Bolts to Nuts.
Prevailing torque type hexagon nuts WITH FLANGE (with non-metallic/nylon insert), metric FINE pitch thread, style 2, product grades A and B, property classes. Input record was materially wrong: it labelled ISO 12125 as ‘Hex Flange Bolts Heavy Series’ under Flange Bolts. Per ISO, ISO 12125 is a flanged prevailing-torque NUT (fine pitch), not a bolt – category corrected from Flange Bolts to Nuts.
Prevailing-torque hex flange nut, non-metallic insert, fine pitch
Key dimensions for common sizes are listed below.
| Thread d x pitch | Width a/flats s (mm) | Flange dia dc (mm) | Nut height m max (mm) |
|---|---|---|---|
| M8x1 | 13 | 15.8 | 9.5 |
| M10x1 | 15 | 19.6 | 11.9 |
| M12x1.5 | 18 | 23.8 | 14.9 |
| M14x1.5 | 21 | 27.6 | 16.9 |
| M16x1.5 | 24 | 31.9 | 18.9 |
| M20x1.5 | 30 | 39.9 | 22.9 |
6H (internal), metric fine
[‘ISO 12126’, ‘ISO 10663’, ‘DIN 6926’, ‘ISO 10512’]
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 12125 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 hexagon nuts WITH FLANGE (with non-metallic/nylon insert), metric FINE pitch thread, style 2, product grades A and B, property classes. Input record was materially wrong: it labelled ISO 12125 as ‘Hex Flange Bolts Heavy Series’ under Flange Bolts. Per ISO, ISO 12125 is a flanged prevailing-torque NUT (fine pitch), not a bolt – category corrected from Flange Bolts to Nuts.
Ananka Fasteners manufactures ISO 12125 in sizes from M8x1–M20x1.5. See the Dimensional Table above for the complete size breakdown.
6H (internal), metric fine
We produce ISO 12125 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 12125 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 12125 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 12125 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
