Given the broad array of bikes, sizes, components, and configurations it would be impossible to succinctly answer this question.
The major build specs are below. If you're not sure please let us know before making a pledge.
Valencia Single Speed rear dropout spacing: 120mm
Sutro Internally Geared rear dropout spacing: 132.5mm
Head Tube 1 1/8"
Seat Tube 27.2mm
Bottom bracket 68mm English thread
Caliper brake mounts