Old Sus Fork

[Rowdee]

Im a small shop mechanic. Rode for GT long long ago. I see many old suspension forks in my shop and all of them have that bolt inside on the bottom. What is the size of these bolts? I assume its an allen, metric. Do they still make tool for these?

 

[Drago]

Typically they're 6mm metric thread, but that's nut an ironclad rule.

 

[I like Skol]

I think the question is, does it take a 4mm, 5mm or 11/72ths hex key?