Sealed beam bracket screw size?

[supermailman]

95 k1500 w/t. What is the correct screw size for the brackets that hold the sealed beam headlights to the front of the truck? Previous owner seems to have used a few random sizes and some are missing so I would like to replace all 8 of them. Thanks in advance.

 

[CountryGrl]

I've got an '88 K1500. Let me know if you get an answer, cause I've been looking for the exact same thing! I know they are Torx, but the threads are not a normal type.

 

[df2x4]

Not sure on the size, but LMC Truck has them for 35 cents each.

https://www.lmctruck.com/1988-98-chevy-gmc/headlight/cd-1988-98-headlight-single