1 / 7Rubatone LN04 42 mm Guitar Locking Nut
The Rubatone LN04 is a black locking nut listed for six-string electric guitars with a 42 mm neck at the nut. Its top-mount design uses screws through the top of the unit, and the package is described as including mounting screws and an Allen wrench.
At a glance
- Top-mount installation with screws passing through the top of the unit.
- Listed for six-string guitars with a 42 mm nut width and Floyd Rose-style double-lock systems.
- Manufacturer also names Strat and Squier-style electric guitars as compatible.
Pros and cons
Pros
- Includes mounting screws and an Allen wrench according to the package description.
- The listed 42 mm length and 6.5 mm string spacing provide concrete measurements to compare with the existing nut.
Technical specifications
8 specifications| Listed fit | Fits for floyd rose style electric guitar, also fit for strat or squier style electric guitar |
|---|---|
| String and neck fit | Fits 6 String electric guitar with 42mm neck at the nut, can be used with your double lock system |
| Length, width and spacing | Black color, Zinc alloy material, length: 42mm(1.65in), Width: 15.2mm(0.6in), String Spacing is 6.5mm(0.26in) |
| Mounting style | Top mount design in which the mounting screws go through the top of the unit |
| Material | Metal |
|---|---|
| Color | Black |
| Weight listed | 1.52 ounces |
|---|---|
| Package dimensions | 5 x 3.5 x 0.4 inches |
What to know before buying
Listing details to confirm
Compatibility is described broadly for Floyd Rose-style, Strat and Squier guitars. Confirm the instrument's nut width, string spacing and top-mount screw layout before ordering. The listing uses both “metal” and “Zinc alloy” for material, so the exact material description is inconsistent.
Who is it for?
A good fit for
- Guitar owners replacing a locking nut who can confirm a 42 mm fit and matching top-mount layout.
- Players maintaining a Floyd Rose-style double-lock system or a compatible Strat or Squier-style guitar.
Less suited to
- Buyers whose guitar requires a different nut width, string spacing or mounting arrangement.

Customer reviews on Amazon
- 5 stars
100% 100% - 4 stars
0% 0% - 3 stars
0% 0% - 2 stars
0% 0% - 1 star
0% 0%
The listing shows only a small set of ratings, all in the five-star category. That is a limited positive signal, not enough to establish how the nut fits particular guitars or performs over time. Buyers should rely on the listed dimensions and confirm compatibility with their instrument.
Frequently asked questions
What guitars is the Rubatone LN04 listed to fit?
The listing names Floyd Rose-style electric guitars and Strat or Squier-style electric guitars, and specifies a six-string guitar with a 42 mm neck at the nut. Check the dimensions and mounting layout against your instrument.
What are the listed nut dimensions?
The listing gives a 42 mm length, 15.2 mm width and 6.5 mm string spacing.
What is included?
The package description lists one locking nut, two mounting screws and one Allen wrench.

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