At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 7040. Prevailing-torque type hexagon nuts (with non-metallic / nylon insert), style 1, property classes 5, 8 and 10, thread sizes M3 to M39. The nylon collar grips the bolt thread to resist loosening under vibration. DIN 985 equivalent.
Prevailing-torque type hexagon nuts (with non-metallic / nylon insert), style 1, property classes 5, 8 and 10, thread sizes M3 to M39. The nylon collar grips the bolt thread to resist loosening under vibration. DIN 985 equivalent.
Nylon-insert prevailing-torque hex lock nut (style 1)
Key dimensions for common sizes are listed below.
| Size | Width across flats s (mm) | Total height m max (mm) | Width across corners e min (mm) |
|---|---|---|---|
| M3 | 5.5 | 4.0 | 6.01 |
| M4 | 7 | 5.0 | 7.66 |
| M5 | 8 | 5.0 | 8.79 |
| M6 | 10 | 6.0 | 11.05 |
| M8 | 13 | 8.0 | 14.38 |
| M10 | 16 | 10.0 | 17.77 |
| M12 | 18 | 12.0 | 20.03 |
| M16 | 24 | 16.0 | 26.75 |
| M20 | 30 | 20.0 | 32.95 |
6H (internal, ISO 965)
[‘DIN 985’, ‘ISO 7041 (nylon insert, style 2)’, ‘ISO 10511 (thin nylon lock nut)’, ‘ISO 2320’]
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 7040 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 non-metallic / nylon insert), style 1, property classes 5, 8 and 10, thread sizes M3 to M39. The nylon collar grips the bolt thread to resist loosening under vibration. DIN 985 equivalent.
Ananka Fasteners manufactures ISO 7040 in sizes from M3–M20. See the Dimensional Table above for the complete size breakdown.
6H (internal, ISO 965)
We produce ISO 7040 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 7040 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 7040 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 7040 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
