B-Mag, the reason why many of these parts say for the DB01 is because they were released as hop-ups for that car.
Also, you don't need to order a whole bag to get the 2mm locknuts - Tower in the US have a couple of different ones (including Tamiya):
http://www3.towerhobbies.com/cgi-bin...?&I=LXWME8&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXGKE8&P=7