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Product guide

Rubatone 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.
Price
$5.03Save 37%

Reference price: $7.99

Price checked: Nov 12, 2026

View offer

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
Fit and dimensions
Listed fitFits for floyd rose style electric guitar, also fit for strat or squier style electric guitar
String and neck fitFits 6 String electric guitar with 42mm neck at the nut, can be used with your double lock system
Length, width and spacingBlack color, Zinc alloy material, length: 42mm(1.65in), Width: 15.2mm(0.6in), String Spacing is 6.5mm(0.26in)
Mounting styleTop mount design in which the mounting screws go through the top of the unit
Materials and finish
MaterialMetal
ColorBlack
Dimensions and installation
Weight listed1.52 ounces
Package dimensions5 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.
Rubatone LN04 42 mm Guitar Locking Nut · photo 2
Additional product photo 2

Customer reviews on Amazon

5 / 5 · 5 ratings
  • 5 stars100%100%
  • 4 stars0%0%
  • 3 stars0%0%
  • 2 stars0%0%
  • 1 star0%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.

Rubatone LN04 42 mm Guitar Locking Nut · photo 3
Additional product photo 3

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