http://www.nikonchat.com/nikon-35mm-camera/

Finding the exact name of a 35 mm Nikon camera manual …?
This is quite urgent, so I would be very grateful if someone could give me the model name Nikon 35mm manual camera has a shutter speed of 6400. The body looks similar to a manual Nikon FE, but the shutter speed goes up to 6400. Thanks a bunch!
My guess is that you're thinking of the Nikon FM2 – is all manual with a shutter speed maximum speed of 1 / 4000 sec. It has a maximum ISO setting (film speed) of 6400, maybe that is what confused? For your information is an update of the old Nikon FM, which had a top shutter speed / 1000 sec and maximum ISO 1600.
Nikon 14-24mm vs. Nikon 17-35mm