Does anyone know the correct size and type of bolts/screws to use to install the OEM style front license plate holder? I moved from AZ (no front plates required) to CA and don't want to keep getting stopped for not having a front plate. I already have the plate holder, but it didn't come with screws/bolts (I guess that's what I get for buying cheap over the Internet).

 

Mine are 10mm, about an inch long. But what bolt on a Honda doesn't use a 10 mm socket?