| masculin | feminin | neuter | plural | |
|---|---|---|---|---|
| Nominative | сваечный | сваечная | сваечное | сваечные |
| Genitive | сваечного | сваечной | сваечного | сваечных |
| Dative | сваечному | сваечной | сваечному | сваечным |
| Accusative inanimate | сваечный | сваечную | сваечное | сваечные |
| Accusative animate | сваечного | сваечную | сваечное | сваечных |
| Instrumental | сваечным | сваечной / сваечною | сваечным | сваечными |
| Prepositional | сваечном | сваечной | сваечном | сваечных |
| Short form | сваечен | сваечна | сваечно | сваечны |