Nashville vs ABR-1 Bridge: Differences and How to Tell
A Nashville and an ABR-1 are both Tune-o-matic bridges, but they mount differently. An ABR-1 sits on thin 6-32 posts screwed into the wood with separate thumbwheels; a Nashville uses one-piece post/thumbwheels that screw into metal body bushings, the bridge is wider, and the saddle screw heads usually face the tailpiece. A third system — the Gibson USA bushing-mounted ABR-1 (some 2017–2019 models and Original Collection ABR-1 guitars since 2019) — looks like an ABR-1 on top but uses Nashville-style bushings underneath.
30-second ID checklist
Look at the posts and bushings, not just the bridge stamp.
- Thin posts threaded the full length, screwed straight into wood, separate thumbwheels, no metal bushing in the body → original ABR-1 (wood-post). Common on Custom Shop / Historic-style guitars.
- One-piece post + thumbwheel screwed into a metal bushing in the body, bridge noticeably wider than an ABR-1 (~13.87 mm vs ~10.8 mm), saddle screw heads usually facing the tailpiece → Nashville.
- ABR-1-sized bridge on one-piece posts in body bushings, upper post smooth (unthreaded) above the thumbwheel → Gibson USA bushing-mounted ABR-1. Still an ABR-1 on top; the mount is what changed.
Still not sure? Compare photos on Which Gibson Bridge Do I Have?, or send clear photos through Contact Us.
Side-by-side specs
“Tune-o-matic” is the blanket name for this style of adjustable bridge. The mount and the casting size are what separate an ABR-1 from a Nashville — and the Gibson USA bushing-mounted ABR-1 sits between them.
| Feature | Original ABR-1 (wood-post) | Nashville | Gibson USA bushing-mount ABR-1 |
|---|---|---|---|
| Body hardware | No metal bushing | Metal bushings pressed into body | Metal bushings (same idea as Nashville) |
| Posts | 6-32 threaded into wood, separate thumbwheels | One-piece post/thumbwheel into bushings | One-piece post/thumbwheel into bushings; upper post unthreaded on factory parts |
| Bridge width (casting) | ~10.8 mm (ABR-1 / Faber ABRN size) | ~13.87 mm — significantly wider | ABR-1 size (~10.8 mm class) |
| Faber ABRH post spacing | 2.898" / 73.6 mm | — (use ABRN path) | ABRH still uses 73.6 mm holes; drops on USA/ABR-1 factory posts |
| Faber ABRH post hole Ø | .144" / 3.65 mm | Will not fit Nashville | Fits factory USA/ABR-1 posts |
| Faber ABRN post spacing | — | 2.923" / 74.4 mm | Not for USA/ABR-1 path |
| Faber ABRN post hole Ø | — | .165" / 4.2 mm | — |
| Upper post Ø above thumbwheel (factory) | Threaded 6-32 | ~3.90 mm Nashville bushing-mount post | ~3.65 mm Gibson USA bushing-mount ABR-1 post |
| Saddle screw heads (typical stock) | Face pickups | Face tailpiece | Face pickups (ABR-1 style) |
| Faber conversion posts | Usually none for wood-post ABR-1 (optional extra-long #3084) | NSWKIT E-Z / iNsert Plus / BSWKIT Pro | EZ #3052 / PLUS #3117 |
Faber ABRH and ABRN spacing and hole sizes above are from live Faber product pages. Factory upper-post diameters follow the Gibson USA ABR-1 guide. Casting widths (~13.87 mm Nashville vs ~10.8 mm ABR-1 / ABRN) are measured figures — the Nashville is significantly wider.
The third system: Gibson USA bushing-mounted ABR-1
On these guitars the bridge on top is still an ABR-1. The mount uses body bushings and integrated posts that are unthreaded above the thumbwheel — Nashville-style hardware under an ABR-1 casting.
For context only (not a year-based shopping rule): some 2017–2019 Gibson USA models, and Original Collection ABR-1 guitars since 2019. Modern Collection guitars with Nashville bridges are a different path — see the fit table below and the Nashville to ABR-1 conversion guide.
A Faber ABRH can sit on factory USA/ABR-1 posts. A Tone-Lock Bridge needs threaded upper posts so the lock nuts can clamp — use Faber “EZ” (#3052) or “PLUS” (#3117) USA/ABR-1 conversion posts, or a Tone-Lock kit that already includes them. Full detail lives on the Gibson USA ABR-1 guide; this page only IDs the system.
Does it change tone?
Mount and mass change how the bridge couples to the body. Players often report firmer coupling and more sustain after replacing loose zinc Nashville posts and bushings with steel or German bell brass Faber conversion posts — treat that as player reports and design intent, not a lab guarantee.
The Faber ABRN is ABR-1 sized (~10.8 mm), so the stop tailpiece can often sit lower than with a wide stock Nashville (~13.87 mm). That is a setup and feel change, not a magic tone switch. For the how-to, see How to Convert a Gibson Nashville Bridge to ABR-1 Style.
Which Faber bridge fits each system
Faber-Germany guitar parts for these three Tune-o-matic systems:
| System | Non-locking | Locking | Posts |
|---|---|---|---|
| Original ABR-1 (wood) | ABRH | Tone-Lock Bridge for Gibson ABR-1 | Existing 6-32; optional extra-long #3084 |
| Gibson USA bushing ABR-1 | ABRH on factory posts | Tone-Lock with EZ / PLUS USA/ABR-1 posts | #3052 EZ or #3117 PLUS (or a kit that includes them) |
| Nashville | ABRN with conversion posts | Tone-Lock E-Z / Plus / Pro (Nashville) | NSWKIT / iNsert / BSWKIT — never stock Nashville posts under a Faber ABR-1-style bridge |
- Example ABRH: #3023-0 ABRH Bridge, Gloss Nickel
- Hubs: Products for Gibson with ABR-1 bridges · Products for Gibson with Nashville bridges · Products for Gibson with USA/ABR-1 bridges
- Les Paul model-by-year fitment: Gibson Les Paul Bridge Replacement
- Post chooser (Nashville / Heritage / Schaller): Choosing conversion bridge posts
Wraparound bridges (bridge and tailpiece in one) are a different system and are covered separately — this page stays on Tune-o-matic ABR-1 vs Nashville vs USA/ABR-1.
FAQ
What is the difference between a Nashville and an ABR-1 bridge?
Both are Tune-o-matic bridges. An ABR-1 uses thin 6-32 posts in the wood with separate thumbwheels; a Nashville uses one-piece posts in metal body bushings, is wider (~13.87 mm vs ~10.8 mm for ABR-1 / ABRN), and usually has saddle screws facing the tailpiece.
How do I tell which bridge my Gibson has?
Check for a metal bushing in the body and whether the thumbwheel is separate or built into the post. Use the 30-second checklist above or Which Gibson Bridge Do I Have?.
Is the bridge on my newer Gibson USA an ABR-1 or a Nashville?
If the bridge looks like an ABR-1 but sits on one-piece posts in body bushings, it is the Gibson USA bushing-mounted ABR-1 system — not a Nashville and not a classic wood-post ABR-1. See the Gibson USA ABR-1 guide.
Can I put an ABR-1 style Faber bridge on a Nashville Gibson?
Yes, with conversion posts. Faber sells the ABRN or Tone-Lock Bridge for Nashville guitars with NSWKIT, iNsert, or BSWKIT posts. Details: Nashville to ABR-1 conversion guide.
Does switching from Nashville to an ABR-1 style bridge change the tone?
Players often report a tighter feel and clearer coupling after replacing loose stock posts/bushings with Faber steel or German bell brass conversion posts, and the narrower ABRN lets the tailpiece sit lower. Treat that as setup and construction, not a guaranteed sound.