Guyker 4-String Bass Bone Nut, Flat-Bottom, Pre-Slotted, Set of 2

Guyker’s bass guitar bone nut is a pre-slotted replacement part intended for four-string PB, JB, Precision Bass, Jazz Bass, or similar instruments. The listing describes a flat-bottom design and includes two nuts, but matching the dimensions to your instrument is essential before fitting.

At a glance

Pre-cut string grooves are intended to position strings without having to cut the slots from scratch.
The listing identifies the nut as flat-bottomed and intended for PB/JB-style basses or similar instruments.
The stated package quantity is two replacement nuts.

Price

$6.55Save 30%

Reference price: ~~$9.37~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Pre-slotted grooves can simplify replacement compared with an unslotted blank.
Two nuts are listed, useful for keeping a spare or completing another compatible project.
The listing identifies cattle bone as the material.

Technical specifications

5 specifications

Fit and construction
Intended string count	4
Material	bone
Listed size and color	BTR4369, red 2 piece
Listed weight	0.16 ounces

Model
Item model number	BT4336-2pcs

What to know before buying

Measure the existing nut before ordering and account for the listing's stated 1–2 mm manual-measurement deviation. Correct fit depends on the instrument's nut dimensions and slot setup.

Who is it for?

A good fit for

Bass owners replacing a pre-slotted nut on a compatible four-string PB, JB, Precision Bass, Jazz Bass, or similar instrument.
Players undertaking a bass setup or repair who can verify the nut dimensions and fit.

Less suited to

Five-string bass projects, despite a generic description reference to 4/5-string basses. The selected listing identifies this item as four-string.
Buyers seeking an adjustable or unslotted nut.

Guyker 4-String Bass Bone Nut, Flat-Bottom, Pre-Slotted, Set of 2 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 129 ratings

5 stars70%70%
4 stars12%12%
3 stars9%9%
2 stars2%2%
1 star7%7%

Customer feedback reports positive impressions of quality and functionality, including a mention of use on left-handed basses, and some buyers consider the set good value. Size feedback is mixed, although the summary says several customers found the dimensions accurate. This matters for a replacement part because slotting alone does not ensure a fit, so compare the nut against your bass before installation.

Positive themes

Customer feedback describes the nut as good quality and functional.
The supplied feedback summary notes use on left-handed basses and positive value impressions.

Mixed feedback

Feedback on nut size is mixed, though some customers report the dimensions as accurate.

Frequently asked questions

How many nuts are included?

The listing says the package includes two bass bone nuts.

Which basses is this intended for?

The listing names four-string PB, JB, Precision Bass, Jazz Bass, or similar instruments. Confirm the dimensions and fit on your particular instrument before purchasing.

Are the string slots already cut?

Yes. The nut is described as pre-slotted with string-location grooves.

What should I measure before ordering?

Measure your original nut and compare the dimensions with the selected listing. The description says manual measurements may deviate by 1–2 mm.