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العربية Threaded rods are easy to quote incorrectly when the RFQ is too short. A request like “M12 threaded rod, zinc plated, 1,000 pcs” may look clear, but it still leaves several questions open.
Is it metric coarse or fine thread? Full 1-meter rods or cut-to-length pieces? Carbon steel or stainless steel? Class 4.8, 8.8, 10.9, or ASTM grade? Zinc plated or hot-dip galvanized?
For buyers, a complete RFQ saves time and prevents wrong production.
Why Threaded Rod RFQs Need Detail
Threaded rods are used in construction, pipe supports, machinery, solar mounting, anchors, and industrial suspension systems. The same diameter can serve very different load and environment requirements.
Buyers can review the wider fastener products range when matching threaded rods with nuts, washers, anchors, or custom parts.
Basic RFQ Information
| RFQ Item | What to Specify | Why It Matters |
|---|---|---|
| Size | Diameter, thread pitch, and length | Controls fit and assembly |
| Standard | DIN, ISO, ASTM, ANSI, or drawing | Defines dimensional requirements |
| Grade | 4.8, 8.8, 10.9, B7, A2-70, etc. | Controls strength |
| Material | Carbon steel, alloy steel, 304, 316 | Affects load and corrosion resistance |
| Finish | Zinc plated, HDG, black oxide, plain | Affects corrosion and thread fit |
| Quantity | Pieces, bundles, or total length | Affects price and production planning |
| Packaging | Bundle, carton, pallet, label | Supports export and warehouse control |
Size: More Than Diameter
Threaded rod size should include diameter, pitch, and length. For metric rods, do not write only “M16.” Confirm whether it is M16 × 2.0 or a fine thread requirement.
Key Size Details
- Nominal diameter
- Thread pitch
- Rod length
- Cut-to-length requirement
- Thread tolerance if required
- Matching nut specification
If the rod must be cut to special lengths, consider custom non-standard fasteners.
Grade and Material Selection
Grade and material should follow the load and working environment.
| Application | Common Direction |
|---|---|
| Light suspension | Carbon steel, low or medium strength |
| General construction | Zinc plated or galvanized carbon steel |
| Heavy-duty assembly | 8.8, 10.9, or alloy steel |
| Flange or pressure equipment | ASTM A193 B7 or project-specified grade |
| Marine or chemical use | Stainless steel 316 or special material |
For load-critical applications, check high-strength fasteners. For corrosion-sensitive projects, compare stainless steel fasteners and coated fasteners.
Finish: Confirm the Exact Requirement
“Galvanized” is often unclear. It may mean zinc plated or hot-dip galvanized. These finishes differ in coating thickness, corrosion resistance, appearance, and thread fit.
For hot-dip galvanized threaded rods, always confirm nut fit after coating.
Final RFQ Checklist
Before sending an inquiry, include:
- Diameter, pitch, and length
- Standard or drawing
- Material and grade
- Surface finish
- Matching nuts and washers
- Application environment
- Quantity and packaging
- Required certificates or inspection reports
A clear threaded rod RFQ helps the supplier quote faster, choose the right process, and deliver parts that fit the job the first time.