Is there any aftermarket replacement for it that is made out of metal or a stronger plastic?

Is the one on MazdaTrix's "Top and Drain Plug" the same as the radiator bleed bolt? Link: http://mazdatrix.com/b8.htm Part # 15-2030-N326

 

I was looking for a brass plug the other day. I couldnt match the threads though. I ended up going to a junkyard and they gave the plug to me for free.

 

Yeah, I think the Mazdatrix p/n you listed is the one...

You know, in the 5+ years I've had my car, I have never had to remove that plug to bleed the system. Always bled it at the high point, the way common sense dictates...

 

Cool, thanks for the help...

WildRX: I was thinking about your idea... But the troublesome part would be finding a bolt that matched up...

 

<--- also fed up with the plastic screw