Product Description

StewMac Neck Shims – The Professional Solution for Perfect Neck Angle Adjustments.

For decades, guitar players and repair shops have used makeshift shims—such as matchbook covers or guitar picks—to adjust the neck angle on bolt-on guitars. However, these create gaps under the neck heel, leading to potential humidity issues and a loss of tone.

StewMac’s precision-crafted maple neck shims solve this problem.

These full-contact, tapered shims fit the entire heel of the neck, ensuring a solid connection between the neck and body. No more guesswork—these shims provide a professional setup with reliable results.

Three Shims for Perfect Adjustments:

None

0.25° Shim:

Ideal for fine-tuning neck angles. Stack multiple shims for customized adjustments.

None

0.50° Shim:

The most commonly used shim, perfect for Fender-style guitars and other solid-body instruments.

None

1.00° Shim tapers from 0.060" to 0.010" (1.52mm to 0.25mm), best for guitars with high-action bridges like Tune-o-Matic or Floyd Rose

Precision Tapering for Consistent Results:

None

0.25° Shim: 0.030" to 0.019" (0.76mm to 0.48mm)

None

0.50° Shim: 0.028" to 0.008" (0.71mm to 0.20mm)

None

1.00° Shim: 0.060" to 0.010" (1.52mm to 0.25mm)

Designed for Universal Fit:

Shaped shims measure 2-3/16" x 3" (55.56mm x 76.12mm) and fit most neck pockets with a rounded heel. For flat-heeled neck pockets, such as Tele-style guitars, simply trim along the lasered guide line.

Trusted by Professional Luthiers:

Save time and ensure a quality neck angle adjustment with these ready-made shims. Perfect for quick repairs in the shop or DIY setups at home.

Built to Last a Lifetime – All StewMac products are backed by our Lifetime Promise.

From the brand

If any of our products ever break, wear out, or fail to exceed your every expectation, simply return it for a replacement. Quality you can trust, for life.

We collaborate with the world's top luthiers to create solutions and educational materials for guitar repair. We also employ techs with decades of experience to assist our customers.

At StewMac the guitar lives in our hearts — we're players, builders, repair pros, and curious tinkerers, just like you!

We have everything you need to build, repair, and finish your guitars.