All parts in their assembled position (each part its own solid)

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

STEP STL free, Xem Studio Design License — Xem Studio

Dimensions

dimension	parts
value	part a, part b, key

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From the full sheet

Kanawa tsugi (keyed hooked splice): every size, notes, mating features and sources. How does a kanawa tsugi joint work?

Other sizes

Member A
Member B
Square key (komisen) 6 × 6 × 32 mm, proud 6 mm both faces