Armitage Shanks Alterna Indices (No Fin) — S9663NU
The Genuine Armitage Shanks S9663NU Alterna Indices are replacement hot and cold markers designed for crosshead handle taps. These indices feature a "No Fin" design, fitting flush into the handle for a clean, traditional look. Manufactured from durable plastic with clear 'H' and 'C' lettering, they are essential for restoring the identification markers on various Sandringham and Alterna tap models.
Technical Dimensions:
Cap Diameter: 11.9mm | Base Plug Diameter: 9.5mm | Base Depth: 3.9mm | Cap Height: 2.0mm
Used In These Models:
- B9875AA: Sandringham 21 Basin Pillar Taps (1/2" Cross Handles).
- S7155AA: Alterna STD Basin Taps (Crosshead).
- S7158AA: Alterna STD Bath Taps (Crosshead).
- S7163AA: Alterna STD High Neck Sink Taps (Crosshead).
Key Features
- Complete Pair: Includes both Hot (Red) and Cold (Blue) identical indices.
- "No Fin" Design: Smooth circular profile designed to push-fit into crosshead tap handles.
- Official Fit: Sourced directly from Armitage Shanks to ensure exact sizing for Alterna and Sandringham series.
- Durable Finish: UV-resistant plastic prevents fading and cracking in bathroom environments.
Fitment Note
These are the 11.9mm versions. Before ordering, please verify your existing tap handle dimensions. If your tap handles require an index with a vertical "fin" or "tab" to lock into a slot, this S9663NU (No Fin) model will not be compatible. These indices simply push-fit into a circular recessed hole.



