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	block, nut

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From the full sheet

M4 captive nut slot (side-loaded): every size, notes, mating features and sources. How do you make a side-loaded M4 nut slot?

Other sizes

Block with a 7 mm wide slot from the side, 3.2 mm tall, and a Ø4 screw hole
M4 hex nut, in place