
The PT-M644-00 is a great option to replace or upgrade the nut on your six string Martin style acoustic guitar. It was specifically designed for Martin and has an angled bottom and is pre-slotted for a quick and simple install.
Measure | Length | Width |
Height |
E to E |
inches |
1.745" |
0.224" |
0.361" | 1.418" |
inches | 1 3/4" |
7/32" | 3/8" | 1 13/32" |
millimeters | 44.32mm | 5.69mm | 9.17mm |
36.02mm |
Note: All Graph Tech nuts and saddles are slightly long and wide to ensure extra room to achieve a perfect fit for your guitar. This extra material can easily be removed with fine grit sandpaper.
TUSQ delivers a rich tone, crystal clear bell like high end with big open lows and a significant increase in harmonic content and harmonic sustain. Increase harmonics equals more richness and character in your tone. Its the difference between a four piece choir and a twelve piece choir singing every time your play a note.
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Consistent quality | ![]() |
Increased harmonic content |
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Ivory white in color |
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1. Measure the overall length of your existing nut. Be as accurate as you can by using a ruler, calipers or a tape measure. Record this dimension. | 2. Measure the overall width of your existing nut. Be as accurate as you can by using a ruler, calipers or a tape measure. Record this dimension. | 3. Measure the E to E spacing of your existing nut, from the center of the low E slot to the center of the high E slot. Be as accurate as you can by using a ruler, calipers or a tape measure. Record this dimension. | 4. Measure the overall height of your existing nut from the bottom to the highest point.Be as accurate as you can by using a ruler, calipers or a tape measure. Record this dimension. |