Smena, like most rangefinders, has a very short registration distance (often called the 'flange-focal distance'). I can't confirm the exact number, but I have found plenty of examples of people who have adapted them to Sony E mount by adding a spacer. Sony E mount has a registration distance of only 18mm, so the Smena uses a distance longer than 18mm. I've found a reference that an adapter used to mount a Smena lens to a Sony E-mount camera was 11mm thick (which means a registration distance of 29mm) and a reference that many Russian M39 threaded lenses had registration distances 0.2mm longer than the Leica M39/L-Mount/LSM of 28.8mm (which also gives a 29.0mm distance for the Smena).

Your Nikon D3300 has a registration distance of 46.5mm. To focus the Smena at infinity, the mounting threads that extend behind the base of the lens would need to be recessed into the camera body approximately 20mm! Unfortunately, even if the lens would fit through the Nikon's 44mm wide throat (it can't) there's a mirror occupying that space only 20mm or so in front of the sensor.

What this means is if the Smena was mounted on the Nikon's lens flange, it would be unable to focus more than a few inches away, if it could focus on anything in front of it at all.