A parametric 3D-printable threaded rod coupler (union nut) to join two threaded rods end-to-end for extensions, all-thread repairs, and 3D printer Z-axis couplers. Customize thread size (M5 / M6 / M8 / M10), coupler length, across-flats, cross-section (hex / round-knurled / square), M4 set-screw locks (0 / 1 / 2), witness hole, and end chamfer.
Part of the 3D Printable Parametric Hardware collection on GrandpaCAD.
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