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Fasteners (Bolts, Screws, Nuts, Washers, Anchors)
China's fastener supply is concentrated in three belts: Handan Yongnian for carbon-steel standard bolts and nuts, Jiaxing Haiyan for cold-headed non-standard parts, and Wenzhou Luqiao for stainless steel and custom fasteners. Most factories hold no trading intermediary; a buyer normally quotes by drawing or by standard code (DIN / ISO / GB), with tooling charges only for non-standard shapes.
Industrial belt
Standard-fastener clusters around Haiyan / Jinxian / Handan (Yongnian) and the Wenzhou / Luqiao non-standard fastener cluster in Zhejiang
Typical products
Materials
Surface finishes
Standards you will quote against
Specification reference
| Attribute | What to specify |
|---|---|
| Property class | 4.8 / 5.8 / 8.8 / 10.9 / 12.9 (ISO 898-1) |
| Stainless grade | A2-70 / A4-80 (ISO 3506) |
| Thread | Metric coarse & fine, UNC / UNF, self-tapping GA/GB |
| Head styles | Hex, socket cap, flange, countersunk, truss, washer-faced |
| Sizes in stock | M3–M64 (belt-dependent), length 6–300 mm |
| Plating thickness | Electro-galvanised 5–12 µm; hot-dip 45–85 µm |
| Salt-spray | White rust 24–72 h (blue zinc); red rust 200–1000 h (Dacromet / HDG) |
| Testing | Tensile, hardness HRC, torque-to-failure, hydrogen embrittlement delay test |
Factories listed in this category
No factory page is published in this category yet. The specification table above is already usable for quotation; factory pages are added under this category URL as they are onboarded.
Questions buyers ask
How do you get an accurate fastener price from a Chinese factory?
Send either the standard code (e.g. DIN 933 M8x40, 8.8, zinc yellow) or a dimensional drawing with material, property class, coating and quantity per size. Factories quote from weight (kg) plus plating cost, so an accurate drawing or a sample photo with measurements is enough to get a same-week price.
Is hot-dip galvanising or zinc plating better for outdoor fasteners?
For buried, marine or long-term outdoor use, hot-dip galvanising (45–85 µm) is the durable choice but changes fine thread fit, so threads must be cut after plating. For indoor or painted assemblies, electro-galvanised (5–12 µm) is cheaper and dimensionally exact.