The size of the hex key varies from brand to brand with some as small as 1 8 and others as big as 5 mm.
Truss rod tool size.
The truss rod needs a tweaking and there is no rod adjustment tool in the case box.
Truss rod wrenches are made in metric and sae imperial sizes.
The 3 8 wide 9 52mm flat blade has the right taper and size to adjust a traditional fender truss rod efficiently without marring the nut.
I ve heard there are 2 differnet sizes and want to get the right one.
Features a nut driver on one end and a handy phillips screwdriver on the other.
Comments 2 paul farrell july 19 2019 5 49pm i found this to be extremely helpful.
Possibilities are hex wrench box wrench nut driver or screwdriver.
4 8 out of 5 stars 110 8 99.
Vencetmat 4mm 5mm truss rod wrench allen wrench tool ball end for martin acoustic guitar truss rod adjustment and deep or narrow truss adjustment.
10 3 4 long 27 31cm with comfortable rubberized handle.
There is not a standard type or size wrench for all guitar truss rods.
Truss rod wrench for fender.
Below james skitchy zimmers from our prs tech center ptc explains the signs that you may need a truss rod adjustment as well as the tools required to safely adjust your own truss rod.
Model 1316 09 universal black model 1317 11 nylon chrome.
Please note that this tool is specifically designed to make adjustments to nylon string guitars and older big baby models whose truss rods are accessed through the soundhole.
Fender wrench is also sold separately.
Some guitars require a more specialized tool.