Detail 01
16-inch radius
Identifies this as the 16-inch-radius version.
Product detailSKU #1500000435640
Graph TechPU-6520-00 Un-Lock Nut 16" Radius 6-String Black TUSQ XL Nut
Independent shopping perspective
The Korena take
The PU-6520-00 is Graph Tech’s black TUSQ XL Un-Lock nut for a 6-string Floyd Rose-equipped guitar, made in a 16-inch radius. Its redesigned slots address string behavior at the bridge and provide an exact radius match for string-height accuracy. Extended ramps distribute stress evenly, while the material is described as delivering three times the self-lubrication for frictionless string movement without compromising nut-slot integrity. It integrates with the Floyd Rose bridge without modifying the instrument.
Strong match
Who this is for
- Six-string Floyd Rose guitars that need the 16-inch-radius Un-Lock nut with no instrument modifications.
Consider the trade-offs
When to look elsewhere
- Guitars that are not equipped with a Floyd Rose bridge.
- Players needing a nut radius other than 16 inches.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Reimagined slots
They are designed around the string behavior associated with the Floyd Rose bridge.
Detail 03
Extended ramps
They distribute string stress evenly during the stated frictionless glide.
Final check
Know before you order
- 01Confirm the guitar is Floyd Rose-equipped.
- 02Confirm that a 16-inch nut radius is required.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What guitars is the PU-6520-00 designed for?
It is designed for 6-string guitars equipped with a Floyd Rose bridge.
02Does it require modifications to the guitar?
No. It integrates with the Floyd Rose bridge without instrument modifications.
03What radius is this version?
It is the 16-inch-radius version.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsBody & build
- Color
- Black
- Bridge Type
- Floyd Rose
