The Floyd Rose SL312RP is a replacement locking nut for the Floyd Rose SpeedLoader tremolo system. Its job is to clamp the strings at the headstock end so tuning changes at the bridge stay locked in and the nut end of the string cannot shift. If your SpeedLoader's nut is stripped, cracked, or missing its clamping function, this is the part that restores it.

Before ordering, measure your existing nut slot — both the neck width and the fretboard radius. This nut is cut for a neck width of 1.6875 in (42.86 mm) and a 12-inch radius. Floyd Rose sizes its nuts in steps (R2, R3, R4 and so on), and close-but-wrong creates problems that cannot be adjusted away: a radius that is too flat leaves the outer strings sitting proud of the block, and a nut that is too narrow crowds the strings toward the fretboard edge. Measure the slot, not the guitar model — the same model can leave the factory with different nut widths across production runs.

The SL312RP is hardened steel. The SpeedLoader system uses a different string-loading mechanism from a standard Floyd Rose, so this nut is not a drop-in replacement for non-SpeedLoader bridges — confirm the tremolo series before ordering.

If you are not certain this is the right size for your guitar, send us the make, model, and year and we will check it against what we have on the bench.