Guide complet pour comprendre les marquages de boulons et les stamps de tête.
Why Bolt Markings Matter
Content coming soon.
Metric Bolt Grade Markings
Content coming soon.
| Grade | Tensile Strength | Proof Stress | Yield Strength | Common Applications |
|---|---|---|---|---|
| 4.8 | 400 N/mm² | 320 N/mm² | 320 N/mm² | General applications, non-critical |
| 8.8 | 800 N/mm² | 640 N/mm² | 640 N/mm² | Construction, machinery |
| 10.9 | 1000 N/mm² | 900 N/mm² | 940 N/mm² | Heavy machinery, vehicles |
| 12.9 | 1200 N/mm² | 1080 N/mm² | 1152 N/mm² | Precision machinery, critical applications |
How to Read Bolt Markings
Content coming soon.
Stainless Steel Bolt Markings
Content coming soon.
Marking Recognition in African Projects
Content coming soon.
Questions Fréquemment Posées
See frequently asked questions below.
What are Technical Guide and how are they used?
Technical Guide are essential components in construction and manufacturing. Proper selection depends on load requirements, environmental conditions, and material compatibility.
How do I choose the right fastener for my project?
Consider the material being fastened, load requirements, environmental exposure, and applicable standards. Consult with a professional if unsure about specifications.
What materials are available for these fasteners?
Common materials include carbon steel, stainless steel, alloy steel, and specialty alloys. Each offers different strength, corrosion resistance, and cost characteristics.
Do you offer custom manufacturing?
Yes, we offer custom fastener manufacturing to spec. Contact our sales team with your requirements for pricing and lead times.
Need fasteners for your project? Get a factory quote from TradeGo.
Get Quote