My 89 Bronco came to me missing the tailgate access panel; I found one in the junkyard this weekend, but it was being held on the donor truck by 3M sticky foam tape - no bolts. Does anyone know what size and type of screw is needed to correctly fasten the access panel to the tailgate? Thanks.

 

The 90 is held on by counter sunk self tapping sheet metal screws. Since it was built 12/89 I would think they would be the same.

 

Thanks. Any idea what size they are?

 

Don't know size .... but they're shown here.
Truck Parts and Truck Accessories

 

Just to close the loop for the archives, my investigations found that these are Ford part 55974-S. This has been in use since at least the 1973 Ford Maverick; current spec for it is 8-18 x 3/4" with a .31 OD in stainless steel or chrome.

Alternate part numbers seem to be:
WU
55962-S (Stainless)
9416208 (Stainless)
9417986 (S45)