98 TJ sun visor screw size?

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My 98 didn't come with any sun visors when I bought it, so I went out and got a set of replacements, but they didn't come with any hardware for the install, anyone know what the right size screw is?

 

[jeepers_creepers]

In case anybody ever runs across this, the screw is a #8-18 x 3/4"