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Servo Spline Info

At this time, Hitec manufactures servos with 5 different splines. When choosing components to attach to your servo, it is important to know what size of spline your servo uses. Below are the five various splines. If you have any questions as to what spline your servo has, please check the servo page or contact us via email or phone (620.221.0123).

A1 Sub-micro Spline (15 teeth)
HS-50, HS-55

B1 Mini Spline (25 teeth)
HS-125MG, HS-56HB, HS-65HB.....many other mini servos.

C1 Standard Spline (24 teeth)
Any standard size Hitec servo. Even the HS-755HB, HS-755MG, HS-765HB and the HS-785HB servo use this standard size spline.

H25T Hitec Standard Spline (25 teeth)
HS-83XXTH and HSB-93XXTH series servos.
NOTE: This spline is the same as the Futaba 25T Standard Spline (3F).

D1 Heavy Duty Spline (15 teeth)
HS-805BB and HS-815BB servos

At this time, Futaba manufactures servos with 4 different splines. When choosing components to attach to your servo, it is important to know what size of spline your servo uses. Below are the four various splines. If you have any questions as to what spline your servo has, please check the servo page or contact us via e-mail or phone.

1F Spline (15 tooth)
Futaba servos such as the S3111, S3114 & S3154.

2F Spline (21 tooth)
Micro servos such as the S3153, S3107, S117 and similar have the 2F size spline.

3F Standard Spline (25 tooth)
Most standard size Futaba servos have the 3F spline.

4F Spline (25 tooth)
This spline is found on most Giant scale servos like the S3306 and the S9154.