Thread Detective For Guitars – StewMac

Thread Detective for Guitars

Customized for guitar parts!
Use the Thread Detective® for a positive I.D. on both male and female threads. No mismatched threads. No ruined parts.

We asked Thread Detective to make this special StewMac version of their famous thread identifier, to cover both US and imported guitar parts. This was a tougher job than anybody expected, because we identified so many unique specs used on guitars. Finally they’re all in one place in this tool!

Identify machine screws, bushings, saddles and more with no guesswork—and without driving to the hardware store. And a lot of these small threads aren’t on the hardware store’s thread checker.

“Guitars and parts are made all over the world, and you never know what’ll walk into your shop. This quick way to check threads makes the work a whole lot easier.”
—Matt Brooker, guitar repairman and StewMac tech advisor

14 SAE thread counts:
3/8-32
5/16-24
5/16-18
1/4-28
1/4-20
10-32
10-24
8-32
6-32
5-40
4-48
4-40
3-48
2-56

14 metric thread counts:
M9 x 0.75
M8 x 1.25
M8 x 1.0
M8 x 0.75
M7 x 1.0
M7 x 0.75
M7 x 0.5
M6 x 1.0
M5 x 0.8
M4 x 0.7
M4 x 0.4
M3.5 x 0.6
M3 x 0.5
M2.5 x 0.45

Chrome-plated steel.