Library › Hardware › SAE straight-side splines, 4, 6, 10 and 16 splines: major diameter…

SAE 16-spline shaft section, nominal 3 in, fit A (permanent)

SAE 16-spline shaft section, nominal 3 in, fit A (permanent): major Ø76.200 mm (3.000 in), spline width W7.468 mm (0.294 in), root Ø69.342 mm (2.730 in), 16 parallel-sided splines; maximum values of the tables; the 76.2 mm length (equal to the major diameter) is an example, no chamfer, no bore

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

splines16
nominal Ø, in2
major Ø D (max), in (mm)2.000 (50.80)
spline width W (max), in (mm)0.196 (4.98)
root Ø d (max), in (mm)1.820 (46.23)
spline depth (D − d) / 2, in (derived)0.0900
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

From the full sheet

SAE straight-side splines, 4, 6, 10 and 16 splines: major diameter D, spline width W and root diameter d (fit A) + example shaft STEP/STL: every size, notes, mating features and sources. What are the major diameter, spline width and root diameter of an SAE 10-spline shaft, for example a 1 in nominal size?

Other sizes