NVE 6-In-Line Locking Guitar Tuners – NVE-501D7SP

Direct Answer: The NVE-501D7SP 6-in-line locking tuners are a set of six locking machine heads featuring a 1:18 gear ratio, built for fast string changes and enhanced tuning stability on electric and acoustic guitars.

The NVE-501D7SP 6-In-Line Locking Guitar Tuners are designed for players who want reliable tuning stability with the convenience of rapid string changes. The internal locking mechanism clamps the string securely at the post, minimising slippage and maintaining tuning accuracy during bends, vibrato use, and live performance.

A smooth and precise 1:18 gear ratio allows fine tuning adjustments, while the locking design reduces excess string wraps around the post. These tuners are engineered to fit modern 10mm headstock holes, making them ideal for many contemporary electric and acoustic guitars.

The 6-in-line configuration suits Strat-style, Tele-style, and other straight headstock designs. A durable screw-in hex head bushing provides a secure, vibration-resistant mounting, ensuring consistent performance and long-term reliability.

Technical Specifications

• Configuration: 6-In-Line (Right-Handed Guitar)
• Tuner Type: Locking Machine Heads
• Gear Ratio: 1:18
• Peg Hole Requirement: 10mm
• Weight: 37g per tuner / 222g per set
• String Post Overall Height: 23mm
• String Post Diameter: 6mm
• Maximum String Gauge: 1.8mm
• String Thru Hole Centre Height: 28.5mm
• Bushing Type: Screw-in Hex Head

What’s Included

• 6 × Locking Guitar Machine Heads
• 6 × Threaded Hex Bushings
• 6 × Mounting Screws
• 6 × Ferrules

Compatibility

Designed to fit guitars with 10mm headstock holes, these 6-in-line locking tuners are compatible with many Strat-style, Tele-style, and modern electric or acoustic guitars using a straight headstock layout.

Frequently Asked Questions

Are these locking tuners?

Yes. The NVE-501D7SP uses an internal locking mechanism to clamp the string securely at the post.

Do locking tuners improve tuning stability?

Yes. Locking tuners reduce string slippage, helping maintain stable tuning during bends, tremolo use, and aggressive playing.

Will these fit Strat or Tele-style guitars?

Yes. The 6-in-line configuration is ideal for Strat-style, Tele-style, and similar straight headstock guitars.

Are these suitable for acoustic guitars?

Yes. These tuners can be used on acoustic guitars with 10mm headstock holes and a 6-in-line layout.

Is installation hardware included?

Yes. Threaded bushings, mounting screws, and ferrules are included for installation.