Size of the Truss Rod Nut 1971 Starfire, 1965 T100D

vibroverb

Junior Member
Joined
Sep 16, 2020
Messages
90
Reaction score
148
Guild Total
2
Hi,

what size of a truss rod wrench do I need for my guitars?

I bought a 1/4 wrench, but it is too small and my 7mm (0,275 inch) is too big......?

Thanks, Ben
 

The Guilds of Grot

Enlightened Member
Joined
Oct 10, 2006
Messages
9,604
Reaction score
4,820
Location
New Jersey Shore
Guild Total
117
I believe they are normally 1/4". Surprised to hear it isn't. Let us know if you figure it out.

(Sorry, I am of no help!)
 

fronobulax

Bassist, GAD and the Hot Mess Mods
Joined
May 3, 2007
Messages
24,795
Reaction score
8,928
Location
Central Virginia, USA
Guild Total
5
Yeah. I would expect it to be 1/4" and the tool Guild sold in the 70's was a branded 1/4" nutdriver.
 

Guildedagain

Enlightened Member
Joined
Jun 8, 2016
Messages
9,108
Reaction score
7,270
Location
The Evergreen State
I wish I could find one.

From the owner's manual of some days gone by - owner's manual are fantastic reads actually - "insert a 1/4 inch nut driver (Guild NKWREN neck wrench or equivalent). The guitar should remain tuned to pitch during this procedure.

A later manual says "insert truss rod adjustment wrench p/n 350-9521-000 or equivalent".

Neither of these can be found, you'd be lucky to find a picture actually.

Stewmac has brand new truss rod nut by the 6pk for Gibsons, very similar nut, I imagine they have the right ones for Guilds.
 

vibroverb

Junior Member
Joined
Sep 16, 2020
Messages
90
Reaction score
148
Guild Total
2
here are a few pictures of my truss rod tools......one too small, the other too big

If the screw were worn out, the small one would have to be too big too

I don't think the wall of the nut is too thick....?

_.jpg
_-2.jpg
_-3.jpg
_-4.jpg
_-5.jpg
_-6.jpg
_-7.jpg
 

Guildedagain

Enlightened Member
Joined
Jun 8, 2016
Messages
9,108
Reaction score
7,270
Location
The Evergreen State
Nothing wrong with your nut. Just wrenches that don't fit. Head out to the garage and find a 1/4" drive 1/4" socket and drive handle, or to the auto parts store, hardware store. Very common tool. Fits most all hose clamps.
 

vibroverb

Junior Member
Joined
Sep 16, 2020
Messages
90
Reaction score
148
Guild Total
2
Thanks.... Have to check where I can buy one in Germany....
 

cupric

Senior Member
Joined
Apr 20, 2018
Messages
1,930
Reaction score
1,362
Guild Total
3
A 1/4" box end wrench works fine too. Just not as handy as you have to reposition the tool.
 

SFIV1967

Venerated Member
Joined
Nov 20, 2010
Messages
18,525
Reaction score
9,070
Location
Bavaria / Germany
Guild Total
8
I just checked my Starfire IV nut.
6.35mm which is a perfect 1/4". I use a Taylor guitars 1/4 tool which fits perfectly.


1612038202389.png


Your 0.251" tool should perfectly fit as well as that is 1/4"...Strange if it seems to be too small?

Ralf
 

Shakeylee

Member
Joined
Jun 5, 2020
Messages
489
Reaction score
285
Location
Philadelphia
Guild Total
4
double check that the spanner you measured as .25 ,is measured flat to fat and not point to point.

if that's the mistake,don't feel bad, the british used to measure how long the flat was :D

1/4"american size (SAE) should fit
 

vibroverb

Junior Member
Joined
Sep 16, 2020
Messages
90
Reaction score
148
Guild Total
2
double check that the spanner you measured as .25 ,is measured flat to fat and not point to point.

if that's the mistake,don't feel bad, the british used to measure how long the flat was :D

1/4"american size (SAE) should fit

Hi,

;) I measured the flat areas, not the corners
 

geoguy

Senior Member
Joined
Mar 1, 2009
Messages
3,595
Reaction score
1,786
Location
metrowest MA
Vibroverb's 1/4-inch socket pictured above, is too long & too thick.

(there might be a "that's what she said" joke in there, somewhere . . . maybe one of you can find it) 🤔
 

Stuball48

Senior Member
Gold Supporting
Joined
Oct 22, 2017
Messages
4,815
Reaction score
2,612
Location
Dickson, TN
Try the 1/4" at different positions. If handle is at 12:00 and does not work, try 10:00 or 2:00 or 4:00 (Dr. Pepper). And giggle it at each position. A bad tool or a metal burr somewhere.
 

cupric

Senior Member
Joined
Apr 20, 2018
Messages
1,930
Reaction score
1,362
Guild Total
3
Just use a 1/4" box wrench. Loosen 3 and 4 strings.
 

Guildedagain

Enlightened Member
Joined
Jun 8, 2016
Messages
9,108
Reaction score
7,270
Location
The Evergreen State
From the owner's manual;

"Insert a 1/4 inch nut driver (Guild NKWREN neck wrench or equivalent). The guitar should remain tuned to pitch during this procedure."


I always go counterclockwise first and make sure nut is free before going in clockwise direction, a drop of machine oil on old dry threads doesn't hurt either. The bigger the strings the harder you have to turn the nut, and there is a snapping point as many have found out.

If as tight as you can get it by hand isn't enough (with nut driver, roughly 1/2 turn from seated is about maxed out), I usually go for a smaller string size.

If you own a good heavy 24" rule, great for checking neck angles, check your neck for bow/relief, you might find on older guitars and basses that the neck is permanently bowed some, and will have too much dip without any strings on the neck, and with truss rod maxed out.
 
Last edited:

vibroverb

Junior Member
Joined
Sep 16, 2020
Messages
90
Reaction score
148
Guild Total
2
Vibroverb's 1/4-inch socket pictured above, is too long & too thick.

Maybe....I just ordered another 1/4" wrench, hope this one works

wrench.jpg

Try the 1/4" at different positions. If handle is at 12:00 and does not work, try 10:00 or 2:00 or 4:00 (Dr. Pepper). And giggle it at each position. A bad tool or a metal burr somewhere.

I try this already....no chance
Maybe the new one works
 

SFIV1967

Venerated Member
Joined
Nov 20, 2010
Messages
18,525
Reaction score
9,070
Location
Bavaria / Germany
Guild Total
8
Vibroverb's 1/4-inch socket pictured above, is too long & too thick.
I'd like to disagree with both but also have no other explanation. Length should be no problem at all on a Starfire.

@vibroverb: Were you able measuring the nut itself? (well it might be impossible to measure the nut when mounted, not sure). But on my 1967 Starfire IV the size "F" is exactly 6.35mm (0.250") which is a perfect 1/4".

1612173803522.png


Ralf
 
Top