How to Choose the Right 1-Pin or 2-Pin Guitar Tuners

Choosing the wrong set of tuning machines can leave you with a costly mistake and a headstock full of mismatched holes. The core of the problem lies in three common but different mounting layouts: Fender 2-Pin, Squier 2-Pin, and Squier 1-Pin. This definitive guide will equip you with the knowledge to identify your guitar's specific layout and make a confident, compatible purchase, ensuring a seamless upgrade for your Fender, Squier, or similar style guitar.

The 3-Step Selection Method: Find Your “Perfect Match”

Step 1: Identify Your Guitar’s “Heritage” (Compatibility)

This is the most important step! Check the columns in the table to see which category your guitar falls into.

Guitar Type	Fender USA/Mexico 2-pin	Squier 2-pin	Squier 1-pin
Tuners Layout
Dimensions

Important Note: If you try to install tuners labeled for “Fender USA/Mexico” on a Squier, or vice versa, it will typically require drilling new pin holes in your headstock. This requires professional tools and skill, carries risk, and is not recommended for beginners.

Step 2: Check Core Specifications (Size & Features)

Once you’ve narrowed down the compatible models, refine your choice with two key specs:

Peg Hole Diameter: All models in the table require a 10mm peg hole. This means they are designed for guitars where the headstock holes have already been reamed to 10mm (the modern standard). If your older guitar has smaller vintage holes (e.g., 6.2mm), you will need a conversion bushing to convert them to 10mm before installing these tuners.

Step 3: Make Your Final Decision Based on Preference

Among the models that meet the criteria above, you can make your final choice based on aesthetics (e.g., black, chrome, gold) and budget.

To help you choose the right tuners more easily, the following is a list of guitar models currently sold in Musiclily:

Additional notes:: The USA/Mexican Fender includes American/Mexican Standard, Professional, Player, etc. The Squier includes Squier Sonic, Affinity, Classic Vibe, etc.

Squier 1-Pin or 2-Pin tuning keys are also compatible with some models from other brands, but you will need to measure your guitar's tuning pin holes and compare them with our size chart to make your selection.