Material specification page for internally threaded dowel pin in A2 Stainless Steel. Covers the grade designation (A2-70 (304)), corrosion and magnetic behavior, comparable grades and their trade-offs, and the sizes available to GB/T 120.1 / ISO 8735.
Why Choose A2 Stainless Steel for Internally Threaded Dowel Pin — GB/T 120.1 / ISO 8735 (Series 100)
The most common stainless grade for indoor and general outdoor fasteners. For internally threaded dowel pin — gb/t 120.1 / iso 8735 (series 100), this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A2-70 (304) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Good general corrosion resistance |
Corrosion Behavior in Service
A2 (304) gives excellent atmospheric and most-water corrosion resistance and is the most common stainless for Internally Threaded Dowel Pin — GB/T 120.1 / ISO 8735 (Series 100) in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).
Comparable Grades
For Internally Threaded Dowel Pin — GB/T 120.1 / ISO 8735 (Series 100), the alternative stainless grade is A4 (316). A2 (304) suits general indoor and outdoor service; A4 (316) adds molybdenum for marine and chloride environments. Where higher strength matters more than corrosion, switch to plated alloy-steel class 8.8 or 10.9.
Sizes of Internally Threaded Dowel Pin — GB/T 120.1 / ISO 8735 (Series 100) Available in A2 Stainless Steel
| Nominal diameter d (mm) | Length L (mm) | Internal thread | Material | Reference standard |
|---|---|---|---|---|
| 4 | 16 | M3 | Alloy steel | ISO 8736 / GB/T 120 |
| 5 | 20 | M4 | Alloy steel | ISO 8736 / GB/T 120 |
| 6 | 24 | M4 | Alloy steel | ISO 8736 / GB/T 120 |
| 8 | 30 | M5 | Alloy steel | ISO 8736 / GB/T 120 |
| 10 | 40 | M6 | Alloy steel | ISO 8736 / GB/T 120 |
| 12 | 50 | M8 | Alloy steel | ISO 8736 / GB/T 120 |
| 16 | 60 | M10 | Alloy steel | ISO 8736 / GB/T 120 |
| 20 | 80 | M12 | Alloy steel | ISO 8736 / GB/T 120 |

