Is a full-tang construction important in a display katana?
Updated Feb 2026
Yes, full-tang construction is one of the most important structural indicators of quality in a collectible katana. In a full-tang blade, the steel extends the entire length of the handle (tsuka), meaning the tang is pinned through the handle with a mekugi peg — exactly as historically produced swords were assembled. This construction method ensures the handle stays firmly seated through decades of display and occasional handling without loosening. Katana with partial or rat-tail tangs are more susceptible to handle wobble over time, which can also affect how the tsuba and habaki fit. For collectors, full-tang construction signals that a piece was built to historical specification rather than as a purely cosmetic reproduction.