A4 Stainless Steel Split Cotter Pin are stocked to ISO / DIN. The grade provides superior, including marine and chloride environments and is largely non-magnetic; the practical service range is approx. -200 °C to +400 °C. Property data, grade comparison and the full size table follow.
Why Choose A4 Stainless Steel for Split Cotter Pin — ISO / DIN (Series 102)
Specified for marine, coastal and chemical applications. For split cotter pin — iso / din (series 102), this matters when superior, including marine and chloride environments is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A4-80 (316) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Superior, including marine and chloride environments |
Corrosion Behavior in Service
A4 (316) adds 2–3% molybdenum to the A2 (304) composition, which dramatically improves resistance to chloride-pitting corrosion. For Split Cotter Pin — ISO / DIN (Series 102) in marine, coastal, swimming-pool or food-processing environments, A4 is the default selection.
Galvanic & Galling Considerations
Two important notes for stainless split cotter pin — iso / din (series 102): (1) stainless can gall on stainless threads under load — use a thread lubricant or anti-galling compound, especially for M6 and below; (2) when joined to aluminum or galvanized steel, stainless can drive galvanic corrosion of the less-noble metal in wet service — isolate with a coating or sleeve where appropriate.
Sizes of Split Cotter Pin — ISO / DIN (Series 102) Available in A4 Stainless Steel
| Nominal diameter (mm) | Length L (mm) | Material | Reference standard |
|---|---|---|---|
| 1.0 | 16 | Carbon steel | ISO 1234 / GB/T 91 |
| 1.2 | 20 | Carbon steel | ISO 1234 / GB/T 91 |
| 1.6 | 25 | Carbon steel | ISO 1234 / GB/T 91 |
| 2.0 | 32 | Carbon steel | ISO 1234 / GB/T 91 |
| 2.5 | 40 | Carbon steel | ISO 1234 / GB/T 91 |
| 3.2 | 50 | Carbon steel | ISO 1234 / GB/T 91 |
| 4.0 | 63 | Carbon steel | ISO 1234 / GB/T 91 |
| 5.0 | 80 | Carbon steel | ISO 1234 / GB/T 91 |
| 6.3 | 100 | Carbon steel | ISO 1234 / GB/T 91 |
| 8.0 | 125 | Carbon steel | ISO 1234 / GB/T 91 |