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 紧固件产品 range when matching threaded rods with nuts, washers, anchors, or custom parts.
Basic RFQ Information
| 询价项目 | 需要指定什么 | 为什么它很重要 |
|---|---|---|
| 尺寸 | Diameter, thread pitch, and length | Controls fit and assembly |
| 标准型 | DIN、ISO、ASTM、ANSI或图纸 | Defines dimensional requirements |
| Grade | 4.8、8.8、10.9、B7、A2-70等 | Controls strength |
| 材质 | Carbon steel, alloy steel, 304, 316 | Affects load and corrosion resistance |
| 完成 | 镀锌、HDG、黑色氧化、普通 | 影响腐蚀和螺纹配合 |
| 数量 | Pieces, bundles, or total length | Affects price and production planning |
| 包装 | 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
- 公称直径
- 螺距
- 杆长
- Cut-to-length requirement
- 螺纹公差(如果需要)
- Matching nut specification
If the rod must be cut to special lengths, consider 定制非标紧固件.
Grade and Material Selection
Grade and material should follow the load and working environment.
| 应用 | 共同方向 |
|---|---|
| Light suspension | Carbon steel, low or medium strength |
| 一般施工 | Zinc plated or galvanized carbon steel |
| 重型装配 | 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 高强度紧固件. For corrosion-sensitive projects, compare 不锈钢紧固件 和 涂层紧固件.
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.
最终RFQ清单
Before sending an inquiry, include:
- Diameter, pitch, and length
- 标准或图纸
- 材质及等级
- 表面光洁度
- 配套螺母和垫圈
- 应用环境
- 数量及包装
- 所需证书或检验报告
A clear threaded rod RFQ helps the supplier quote faster, choose the right process, and deliver parts that fit the job the first time.