At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 1804. Slotted round nuts for hook (C) spanners, ISO metric fine thread. Cylindrical nut with radial slots milled in the periphery, tightened with a hook or pin spanner; used to secure bearings, pulleys and adjusting sleeves on shafts. Form N (with slots) and form W (with grooved face). Fine-pitch threads M8x1 upward.
Slotted round nuts for hook (C) spanners, ISO metric fine thread. Cylindrical nut with radial slots milled in the periphery, tightened with a hook or pin spanner; used to secure bearings, pulleys and adjusting sleeves on shafts. Form N (with slots) and form W (with grooved face). Fine-pitch threads M8x1 upward.
slotted round nut (hook-spanner nut)
Key dimensions for common sizes are listed below.
| Thread (fine) | Outside dia d1 (mm, max) | Height h (mm, max) | No. of slots |
|---|---|---|---|
| M10x1 | 25 | 6 | 4 |
| M12x1.5 | 28 | 6 | 4 |
| M16x1.5 | 32 | 8 | 4 |
| M20x1.5 | 36 | 8 | 4 |
| M24x1.5 | 42 | 8 | 4 |
| M30x1.5 | 50 | 10 | 4 |
| M40x1.5 | 62 | 12 | 4 |
| M50x1.5 | 75 | 14 | 6 |
6H (fine pitch)
[‘DIN 1804 W’, ‘DIN 981 (KM)’, ‘DIN 70852’, ‘ISO 2982’]
For the official DIN standards catalogue, see the DIN standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce DIN 1804 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.
Slotted round nuts for hook (C) spanners, ISO metric fine thread. Cylindrical nut with radial slots milled in the periphery, tightened with a hook or pin spanner; used to secure bearings, pulleys and adjusting sleeves on shafts. Form N (with slots) and form W (with grooved face). Fine-pitch threads M8x1 upward.
Ananka Fasteners manufactures DIN 1804 in sizes from M10x1–M50x1.5. See the Dimensional Table above for the complete size breakdown.
6H (fine pitch)
We produce DIN 1804 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 DIN 1804 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: DIN 1804 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 1804 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
