2003 bleeder valve size

[Threedognight]

Can anybody PLEASE tell me what size the brake bleeder valve is on passenger side 2003 3.0? Ive tried everything. Its either too big or too little. Metric and standard

 

[pjtoledo]

front or rear?
after 23 years chances are it's not the factory ones and may be any size.
use quality 6 point tools. scrape the rust off if it's there.
clean out the hole, spray some "freeze off" in it to shrink it.
for a stubborn one I would put a socket on an extension to give a straight pull. wrenches actually side load/offset load parts.

5/16=.3125
8mm=.3149
11/32=.3437
9mm=.354
3/8=.375
10mm=.393
11mm=.433
7/16=.4375