Futaba FUSHORNA-4 D6mm Type-A Servo Horn Set 4pcs  [FUSHORNA-4]

Servo Throw and Lever Arm Notes

The kit contains four Type-A cross-arm servo horns made for Futaba-style spline interfaces, delivered without screws or packaging. The product listing specifies 4 pcs and the D6mm cross-arm fitment noted in the title.

Use these horns when you want to change linkage leverage or replace worn arms. Since screws are not supplied, keep your original mounting screws or obtain compatible retaining screws separately. Verify the D6mm cross-arm interface before fitting to avoid mismatch.

To install, align the horn with the servo spline, push it fully into place, and secure with the appropriate screw for your servo. Altering horn length or style will directly affect throw and mechanical advantage, giving a simple way to tune steering rate or control surface travel on scale models.