What size allen key do i need to adjust a truss rod on a Fender Squier J Bass?

[Paige]

The action on my bass is awful... you could park a bus under there and all my tools are getting dusty at work. Looking to order an allen key/wrench to adjust the truss rodd but I don't know what mm it is, anyone know?

Cheers

 

[BaileyMan]

The action on my bass is awful... you could park a bus under there and all my tools are getting dusty at work. Looking to order an allen key/wrench to adjust the truss rodd but I don't know what mm it is, anyone know?

Cheers

Maybe 4 mm? Not 100% sure though. Maybe order a metric set with a variety of sizes?

 

[Bodeanly]

I just keep trying to stick 'em in until one fits.

 

[Matt Liebenau]

Welcome to TB. It should be 4mm. I suppose there’s an outside chance it’s 5mm. I’d bet that a full set of metric Allen wrenches isn’t a whole lot more then one individual wrench and you will need some thing to adjust your bridge saddles as well if you’re doing a full setup.

 

[byacey]

Make sure whatever wrench you use is the EXACT size, otherwise you risk damaging the adjuster and then your real problems begin.

 

[Big Boz]

My Squier P was a 4mm. Now it's more like 4.5683 mm since the previous owner gooched it. Now neither a 4 or 5 mm fit. But the action is where it needs to be after switching to flats so I'm not too worried about it........yet.

 

[vaesto]

Previous CV line had 5 mm, all other series with double action TR had 4 mm. Can't tell what is in MII new CV series. In any case make sure it fits tightly, otherwise you risk to break the nut which is not repairable.

 

[Watchootognbout]

Get a set of standard and metric Allen wrenches and you'll never have to ask this question again.