I'm looking for a source where I can locate unusual fasteners. The one I'm currently looking for is the machine screw for the rear air deflector on a 3rd Gen 4Runner. I've measured one and it is:

M5x1.0 15mm, oval head machine screw (a black, tapered rubber or plastic washer would also be of use)

I need 3 to 8 of them (depending on how much they run).

Before someone says something about the unusual thread pitch, let me say that I measured one of the screws with vernier calipers and I'm 99% certain I've got the correct size.

 

try the dealer - should only be a couple bucks.

 

tacoma screw

 

McMaster-Carr

 

Tacoma screw and McMaster-Carr don't have the part. The problem is that M5x0.8 is the ISO standard (i.e., a 0.8 thread pitch for all M5 fasteners), making M5x1.0 a non-standard pitch for the diameter.

I'll inquire at the dealer, I guess.