At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 7720. Prevailing torque type all-metal hexagon nuts, style 2 (higher body), metric COARSE thread, property class 9. Input description (‘Prevailing Torque Nut Fine Pitch’) was incorrect and corrected: ISO 7720 is a style-2 all-metal locknut with COARSE pitch, not a fine-pitch nut. Locking is by distorted all-metal threads.
Prevailing torque type all-metal hexagon nuts, style 2 (higher body), metric COARSE thread, property class 9. Input description (‘Prevailing Torque Nut Fine Pitch’) was incorrect and corrected: ISO 7720 is a style-2 all-metal locknut with COARSE pitch, not a fine-pitch nut. Locking is by distorted all-metal threads.
Prevailing-torque all-metal hex nut (style 2)
Key dimensions for common sizes are listed below.
| Thread d | Pitch (mm) | Width a/flats s (mm) | Width a/corners e min (mm) | Nut height m max (mm) |
|---|---|---|---|---|
| M5 | 0.8 | 8 | 8.79 | 5.1 |
| M6 | 1.0 | 10 | 11.05 | 6.4 |
| M8 | 1.25 | 13 | 14.38 | 8.3 |
| M10 | 1.5 | 16 | 17.77 | 10.4 |
| M12 | 1.75 | 18 | 20.03 | 12.6 |
| M16 | 2.0 | 24 | 26.75 | 17.1 |
| M20 | 2.5 | 30 | 32.95 | 21.3 |
| M24 | 3.0 | 36 | 39.55 | 25.5 |
6H (internal)
[‘ISO 7042’, ‘ISO 7719’, ‘ISO 10513’, ‘ISO 4033’]
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 7720 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, style 2 (higher body), metric COARSE thread, property class 9. Input description (‘Prevailing Torque Nut Fine Pitch’) was incorrect and corrected: ISO 7720 is a style-2 all-metal locknut with COARSE pitch, not a fine-pitch nut. Locking is by distorted all-metal threads.
Ananka Fasteners manufactures ISO 7720 in sizes from M5–M24. See the Dimensional Table above for the complete size breakdown.
6H (internal)
We produce ISO 7720 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 7720 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 7720 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 7720 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
