4-string · Bolt-on
Jazz Bass style based on the 1963 Jazz Bass. Alder (or ash) body, maple neck with rosewood or maple fingerboard, a thinner neck and more radical offset body than the PB models, and two single-coil J pickups that add midrange and treble for extra punch and clarity. 34-inch scale, 38mm (1 5/8-inch) nut, 3-ply pickguard (White/Mint/Tortoise/Black/Pearl). Nitrocellulose finish with optional relic aging. Handmade in Olympia, Washington by Bill Nash; typically fitted with Lollar pickups. Approximate street price, varies by finish and aging.
| Construction | Bolt-on |
| Strings | 4 |
| Body | Alder or ash |
| Neck | Maple |
| Fingerboard | Rosewood or maple |
| Neck Pickup | Single-coil (J) |
| Bridge Pickup | Single-coil (J) |
| Controls | Volume, volume, tone; passive |
| Bridge | Vintage-style bridge |
| Made In | USA |
Artists documented playing the Nash JB-63: Eric Avery, Glenn Hughes, Stephen Paulson.