A2 Stainless Steel Parallel Dowel Pins, Unhardened are supplied to ISO 2338. The grade provides good general corrosion resistance and is largely non-magnetic; the practical service range is approx. -200 °C to +400 °C, subject to the property class and the joint. Property data, grade comparison and the full size table follow.
Why Choose A2 Stainless Steel for Parallel Dowel Pins, Unhardened
The most common stainless group for indoor and general outdoor fasteners. For parallel dowel pins, unhardened, this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70 |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C, subject to the property class and the joint |
| 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 Parallel Dowel Pins, Unhardened in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).
Galvanic & Galling Considerations
For stainless parallel dowel pins, unhardened the compatibility question is galvanic rather than galling: joined to aluminum or galvanized steel in wet service, stainless drives corrosion of the less-noble metal. Isolate with a coating, sleeve or non-conductive washer where the joint sees moisture. Note also that stainless is softer than hardened carbon steel, so where the part carries a wear or shear duty, check the load against the grade before substituting.
Using Stainless Fasteners in Aluminum
Expect the aluminum to corrode, not the fastener — stainless sits higher in the galvanic series, so the aluminum is the one that gives up material. A small fastener in a thick section spreads the loss over a large area and is usually fine; a large fastener in thin sheet concentrates it and is not. Keep water out of the joint, or isolate the two metals with a nylon or coated washer and a sealant.
Sizes of Parallel Dowel Pins, Unhardened Available in A2 Stainless Steel
| Nominal diameter d (mm) | d (mm) | c (mm) | Length range l (mm) | Reference standard |
|---|---|---|---|---|
| 0.6 mm | 0.6 | 0.12 | 2~6 | ISO 2338 |
| 0.8 mm | 0.8 | 0.16 | 2~8 | ISO 2338 |
| 1 mm | 1 | 0.2 | 4~10 | ISO 2338 |
| 1.2 mm | 1.2 | 0.25 | 4~12 | ISO 2338 |
| 1.5 mm | 1.5 | 0.3 | 4~16 | ISO 2338 |
| 2 mm | 2 | 0.35 | 6~20 | ISO 2338 |
| 2.5 mm | 2.5 | 0.4 | 6~24 | ISO 2338 |
| 3 mm | 3 | 0.5 | 8~30 | ISO 2338 |
| 4 mm | 4 | 0.63 | 8~40 | ISO 2338 |
| 5 mm | 5 | 0.8 | 10~50 | ISO 2338 |
| 6 mm | 6 | 1.2 | 12~60 | ISO 2338 |
| 8 mm | 8 | 1.6 | 14~80 | ISO 2338 |
| 10 mm | 10 | 2 | 18~95 | ISO 2338 |
| 12 mm | 12 | 2.5 | 22~140 | ISO 2338 |
| 16 mm | 16 | 3 | 26~180 | ISO 2338 |
| 20 mm | 20 | 3.5 | 35~200 | ISO 2338 |
| 25 mm | 25 | 4 | 50~200 | ISO 2338 |
| 30 mm | 30 | 5 | 60~200 | ISO 2338 |
| 40 mm | 40 | 6.3 | 80~200 | ISO 2338 |
| 50 mm | 50 | 8 | 95~200 | ISO 2338 |
Dimensions are independent of the material: every size above is available in A2 Stainless Steel.
Custom manufacturing · Made to drawing
Need this pin in a grade that is not listed?
A2 Stainless Steel is one of the grades the catalog describes. End form, hardness and surface finish are all variable; the diameter tolerance is the one that decides the process. Made by cold heading or turning.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
