Folk guitar string nails (solid string cones) in ebony with matt black finish, 5.3mm bayonet diameter, set of 6 pieces for 40 inch to 42 inch acoustic guitars.
Solid Ebony Folk Guitar String Nails: 5.3mm Matt Black Set of Six

Replacing worn or ill-fitting string nails (also known as solid string cones) is essential for maintaining proper string alignment and tension on a folk acoustic guitar. This set provides six precision-made replacement posts crafted from solid ebony wood, finished in a matt black colour. Designed with a 5.3mm bayonet diameter, they are specified for use on standard 40 inch, 41 inch, and 42 inch folk guitar models. Supplied as a complete set, they allow for replacement of all bridge pins, ensuring a consistent look and reliable performance across all string positions.
Features and Construction

These string nails are built to provide a functional and aesthetic replacement part for acoustic folk guitars. Their construction focuses on precise dimensions and suitable materials for the application.
Material and Build
The string nails are manufactured from solid ebony wood, a traditional material in instrument making known for its density and structural stability. This material choice avoids the potential for splitting or wear that can occur with softer woods. The matt black finish provides a uniform, non-reflective surface that blends with many guitar bridge styles. Each piece is turned to shape as a solid, one-piece construction.
Size and Practical Fit
The critical dimension for fitting is the 5.3mm bayonet diameter, which is designed to match the standard hole size in many folk guitar bridges. This measurement ensures the nail fits snugly without excessive play, providing secure anchorage for the guitar string ball end. The product information specifies compatibility with 40 inch, 41 inch, and 42 inch folk acoustic guitars, covering a common range of standard body sizes.
Uses and Placement

String nails serve a fundamental role in guitar setup, and this set is intended for a specific range of instruments. Their use is straightforward and tied to maintenance or customisation.
Event or Professional Use
For guitar technicians, luthiers, or musicians who maintain multiple instruments, having a stock of correct replacement parts is practical. This set of six provides a full replacement kit for a single guitar, useful in a workshop environment for routine servicing, restoration work, or when upgrading from plastic pins to a wood option for a potential tonal or aesthetic change. The specified size ensures compatibility with a wide range of common folk guitars seen in professional settings.
Everyday Home Use
For the individual guitarist, this set offers a solution for replacing lost, damaged, or poorly fitting string nails on their 40 to 42 inch folk acoustic guitar. The complete set of six means all positions can be updated at once for a uniform appearance. The simple replacement process involves removing the old pin, inserting the new one after placing the string ball end, and ensures the instrument remains playable with secure string ends at the bridge.
Benefits and Buying Value

The value of these components lies in their specification-matched replacement capability and the practical advantages of the materials used.
Reuse and Low Maintenance
As solid wood components, these string nails are durable under normal use and are not single-use items. Unlike some plastic pins, they are less prone to deformation or cracking from string tension over time. Their maintenance is minimal, requiring only occasional checking for fit. Being made of wood, they can be lightly sanded if needed for a minor fit adjustment, though their 5.3mm diameter is intended as a ready-to-use size.
Why Choose This Product
This product offers a direct, specification-led replacement part for common folk guitar sizes. The choice is based on the confirmed 5.3mm diameter and stated compatibility with 40-42 inch guitars, reducing uncertainty for buyers matching a part to their instrument. The material (ebony) and finish (matt black) provide a traditional and understated look. The value is in obtaining a complete set of six matching pieces from a single purchase, providing a straightforward solution for guitar maintenance.

