Scramasax, or Seax, was a Germanic bladed weapon. Swords were more common among the Germanic peoples than with the Celts, however they would have been expensive and therefore not an automatic part of every warriors accoutrements.
In the seventh century blades would get as long as 50 cm, or 20 inches. But in the fifth century they may have been more like 30 cm or 12 inches. They had a single-edged blade, were made with a tang that connected them to an organic hilt (horn or wood), and were worn blade side up.
Primarily a secondary weapon, the scramasax was a specifically Germanic blade.