Square Steel Tube Truss Rod

  • 4 Reviews
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This nonadjustable design was used for years in Martin guitars with 14 frets to the neck/body joint. Our improved version is strong stainless steel.

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Square Steel Tube Truss Rod

Item # 0976
In stock, ready to ship!

$7.53

10 or more $5.65
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Quantity: 20

Product Details

This nonadjustable design was used for years in Martin guitars with 14 frets to the neck/body joint. Our improved version is strong stainless steel.

3/8" x 3/8" x 14"
(9.53 x 9.53 x 356mm)

Saw it shorter to fit other necks.


Trade Secrets! Newsletter

Strengthening a square-tube Martin truss rod

Dan Erlewine's doing a neck reset on a Martin that has a square-tube truss rod. While he has the neck off, he shows how to improve the truss rod before regluing the neck.

Ratings & Reviews

Square Steel Tube Truss Rod

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  • Based on 4 Reviews
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Good cheap fix!

By Colin from Cumbria, UK
(Customer's Reviews) Tuesday, February 12, 2013


I recently restored an unplayable 1946 Harmony archtop that had no rod (wartime). The neck was badly twisted and bowed and having steamed and clamped it to get it straight, I installed one of these rods. It's completely undetectable and after a year the action hasn't moved. This guitar didn't warrant the expense of a carbon fiber rod but it's back making music again.

Stiff as

By maurice paul guitars from Australia
(Customer's Reviews) Tuesday, July 05, 2011


I like these in my classical guitars as they are incredibly stiff and not too heavy.

traditional non-adjustible truss rod

By nilsericksonguitars from framingham
(Customer's Reviews) Monday, May 23, 2011


Sometime in the 1970's or 1980's Martin changed to an adjustable truss rod. Prior to that they used a non-adjustable support. After taking apart and repairing a few vintage Martins, I grew to like the idea of the non-adjustable truss rod. Using them I find that the neck under tension gives just about the perfect amount of relief. After all, if a neck gets into trouble due to the neck set, the solution really is not a truss rod adjustment, it's a neck reset, which many old Martins seem to need. I like the simplicity of the non-adjustable rod, it's rigidity and the Martin tradition.

I wish Stewmac offered the older style t-bar non-adjustable truss rod. Maybe they will in the future.

Using square tube instead of adjustable truss rod

By CarverDan from Ottawa Canada
(Customer's Reviews) Saturday, December 18, 2010


I'm building another Cigar box guitar and this time I would like to try the non adjustable truss rod, because it simplifies some of the operations on the neck.



Shown on page 72 of our latest catalog.