了解公制和英制螺纹类型、螺距差异、兼容性规则，以及如何为建筑紧固件采购指定正确的螺纹。
公制vs英制螺纹体系
| Metric Size | Pitch (mm) | Imperial Equivalent | TPI | Compatible? |
|---|---|---|---|---|
| M6 | 1.0 | 1/4" | 20 | No |
| M8 | 1.25 | 5/16" | 18 | No |
| M10 | 1.5 | 3/8" | 16 | No |
| M12 | 1.75 | 1/2" | 13 | No |
| M16 | 2.0 | 5/8" | 11 | No |
粗牙vs细牙
| Size | Coarse Pitch | Fine Pitch | Coarse Tensile Area (mm²) | Fine Tensile Area (mm²) |
|---|---|---|---|---|
| M8 | 1.25 | 1.0 | 36.6 | 39.2 |
| M10 | 1.5 | 1.25 | 58.0 | 61.2 |
| M12 | 1.75 | 1.25 | 84.3 | 92.1 |
| M16 | 2.0 | 1.5 | 157 | 167 |
| M20 | 2.5 | 1.5 | 245 | 272 |
采购中如何正确指定螺纹
如何识别现有螺栓是公制还是英制？
使用螺纹规测量螺距。如果螺距匹配公制值（如1.5mm），则为公制。如果匹配每英寸牙数值，则为英制。卡尺可确认公称直径。
可以用螺纹嵌件将英制螺纹转换为公制吗？
可以，螺纹嵌件可修复损坏螺纹或在非结构应用中转换螺纹体系。但结构连接不建议转换，使用原始螺纹规格。
常见问题
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.
需要帮助指定正确的螺纹类型？联系TradeGo Fasteners获取专业指导。
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