Class 12.9 steel threaded rod
Our Class 12.9 steel threaded rods offer the highest level of mechanical strength for your critical applications. Compliant with standard NFE 25-136 Form A, these rods are manufactured without a chamfer but nevertheless ensure a secure screw connection thanks to their ISO-pitch threading.
Key points: class 12.9 steel threaded rod
HIGH STRENGTH: Class 12.9, certified to ISO 898-1, with heat treatment
AVAILABLE PROTECTIONS: Plain or blue-white zinc-plated Cr3 on request
FLEXIBILITY: Lengths of 1, 2 or 3 metres or made to measure, with guaranteed traceability
Technical specifications
Compliant with the NFE 25-136 standard, with ISO pitch threading, form A (without chamfer but with guaranteed thread engagement) or form B (with chamfer) on request.
Identification and marking
Identification by black paint and marking of the ‘12.9’ grade at both ends, starting from the M10.
Standard lengths available:
- 1 metre
- 2 metres
- 3 metres
Specific lengths can be produced on request.
See our packaging and palletisation options.
Available finishes
Two finish options to suit your needs:
Plain finish
Blue-white zinc-plated finish CR3 (on request)
HTC (High Corrosion Resistance CR3) zinc-plated finish
- Electrolytic galvanising with a thickness of 8–12 microns
- Intended use: dry indoor environments
- Enhanced zinc plated finish to ensure greater corrosion resistance, suitable for use in damp indoor environments (cellars, sheds, etc.)
Warning: precautions must be taken when carrying out electrolysis treatment or acid cleaning on Class 12.9 fasteners, as there is a risk of fracture due to hydrogen embrittlement. In such cases, a ‘degassing’ process must be carried out. This degassing process cannot guarantee the complete elimination of the risk of hydrogen embrittlement. (See the norm ISO 4042)
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