Splines
Spline	1.500x16
Tube	3.500 x .083
(K)	7.531
(L)	3.000
(R)	6.594
(B)	3.345

Dana Spicer Spline Stub 3-40-1491S Spline Major Diameter 1.500 Spline Count 16.000 Spline Type Parallel Tube Diameter and Wall Size 3.500 X .083 End of Spline to Weld 7.531 Length of Spline 3.000 End of Spline to Radius 6.594