This is a rope clam cleat used on the North Navigator Kitesurfing Kite bar and in many sailing applications.
The mounting hole dimensions and base are datasheet-perfect. On other surfaces, you can expect a .25mm accuracy. I deemed this sufficient for my model, given this is a die-forged part, and each unit is slightly different in measurement.
Below is the product link (not my product): https://www.clamcleat.com/racing-junior-mk2-3.html