Looking for a 1 to 1.5 mm pitch board to wire connector that locks
Your best bet is to do a parametric search on one of the large suppliers sites. 

Here is an example search on Farnell that returns ~2000 results for wire to board between 1mm and 1.5mm. You can narrow it down as necessary (e.g. contact number, orientation, etc)
When you find a suitable part you can search for it elsewhere by product number if necessary.