pinch bolt allen size?

[williegoat]

Can anyone tell me what size allen head fits the front axle pinch bolts on my '06 Firebolt?
The '05 shop manual (the only one I have) says "metric", 6mm is too small and 7mm is too big.

 

[williegoat]

if i remember right it's 1/4

Thanks! Got it!
+ for you [up]