Fastener Procurement Glossary: Essential Terms for. Vollständiger Leitfaden für Fastener Procurement Glossary: Essential Terms for - Spezifikationen, Anwendungen und Lieferantenauswahl für B2B-Export in afrikanische Märkte.
International Trade Terms (Incoterms)
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| Term | Seller's Responsibility | Buyer's Responsibility | Risk Transfer |
|---|---|---|---|
| FOB | Delivery to vessel | Freight, insurance, duties | On vessel |
| CIF | Freight, insurance to port | Duties, inland transport | Destination port |
| EXW | None (goods ready) | All costs | Seller's premises |
| DDP | All costs including duties | None | Buyer's premises |
Quality Documentation
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Ordering Terms
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Shipping & Logistics
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Quality Verification
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Complete Fastener Specifications Reference
## Comprehensive Specifications for African Buyers When procuring fasteners for African markets, understanding the complete specifications is critical for quality control and competitive pricing. ### Mechanical Properties **Property Class 4.6 (Low Carbon)** - Tensile strength: 400 MPa - Yield strength: 240 MPa - Elongation: 22% - Applications: Non-critical, light duty **Property Class 8.8 (Medium Carbon)** - Tensile strength: 800 MPa - Yield strength: 640 MPa - Elongation: 12% - Applications: Most common for construction **Property Class 10.9 (Alloy Steel)** - Tensile strength: 1000 MPa - Yield strength: 900 MPa - Elongation: 9% - Applications: High-stress structural **Property Class 12.9 (Alloy Steel)** - Tensile strength: 1200 MPa - Yield strength: 1100 MPa - Elongation: 8% - Applications: Automotive, critical applications ### Standard Cross-Reference | Standard | Region | Common Use | |----------|--------|------------| | ISO 898 | International | Mechanical properties | | DIN 933 | Germany/Europe | Hex head bolts | | ANSI/ASME B18.2.1 | North America | Hex bolts | | GB 5783 | China | Hex head bolts | | JIS B1180 | Japan | Hex bolts | | SANS 1700 | South Africa | General fasteners | ### Thread Pitch and Sizes Common thread pitches for African procurement: - **Coarse (UNC)**: M6×1.0, M8×1.25, M10×1.5, M12×1.75 - **Fine (UNF)**: M6×0.75, M8×1.0, M10×1.25, M12×1.5 - **Extra fine (UNEF)**: M10×1.0, M12×1.25 ### Surface Coatings for African Conditions | Coating | Salt Spray (hours) | Cost (relative) | Best For | |---------|-------------------|----------------|----------| | Zinc plating (clear) | 48-96 | 1.0× | Indoor, dry climate | | Zinc plating (yellow) | 96-200 | 1.1× | General outdoor | | Hot-dip galvanizing | 500-1000 | 1.8× | Coastal, harsh | | Dacromet | 500-1000 | 2.0× | High corrosion | | Stainless 304 (A2) | 1000+ | 4.0× | Premium projects | | Stainless 316 (A4) | 2000+ | 5.5× | Marine, chemical | For most African construction projects, **hot-dip galvanizing** or **Dacromet** offers the best balance of cost and corrosion resistance.
Häufig Gestellte Fragen
See frequently asked questions below.
What are Procurement Guide and how are they used?
Procurement 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.
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