Toto spares, Toto parts, Toto spare parts, Spare code no ; THX70V3.
The TOTO THX70V3 is a hinge fixing kit (mounting hardware) for selected TOTO soft-close toilet seats. It is not the soft-close damper itself, but the hardware used to securely attach the seat to the toilet bowl.
Part details
- Part number: THX70V3
- Part name: Hinge Fixing Kit / Hinge Set
- Function: Secures the toilet seat and hinge assembly to the toilet bowl while maintaining proper alignment.
Compatible models
Public parts lists identify THX70V3 as being compatible with:
- TC811SJ
- In some regional catalogs, it is also listed as the hinge set for TC282SJ (Santa Maria/Santo soft-close seat).
Typical contents
Although TOTO does not publish an exploded drawing for THX70V3, a hinge fixing kit of this type typically includes:
- Left and right hinge mounting brackets
- Mounting bolts/screws
- Nuts or expansion anchors
- Washers and spacers
- Decorative hinge caps (depending on the seat model)
Uses
The THX70V3 is used to:
- Fasten the toilet seat securely to the bowl.
- Keep the seat properly aligned.
- Support the soft-close hinge mechanism.
- Replace worn, corroded, or damaged mounting hardware without replacing the complete seat.
Related spare parts
For the same seat family, you may also encounter:
- THX70V6R – Soft-close cartridge (damper)
- THX70V3 – Hinge fixing kit (mounting hardware)
If you need engineering dimensions, a 2D drawing, or a CAD model of the THX70V3 hinge kit, I can create a reference design based on its mounting geometry and standard TOTO hinge dimensions.
The TOTO THX70V3 is a hinge fixing kit (hinge set) for selected TOTO toilet seats. Its primary purpose is to mount and secure the toilet seat to the toilet bowl while supporting proper hinge operation. It is a mechanical fixing kit rather than the soft-close damper itself.
Uses of THX70V3
- Secures the toilet seat firmly to the toilet bowl.
- Supports the hinge assembly, allowing the seat and lid to pivot smoothly.
- Maintains correct seat alignment, helping prevent wobbling or shifting.
- Replaces worn or damaged mounting hardware without replacing the complete toilet seat.
- Provides a stable base for the soft-close mechanism on compatible seat models.
Typical applications
The THX70V3 hinge fixing kit is listed as a spare for selected TOTO toilet seats, including models such as:
- TC280SJ (Valdes soft-close seat)
- Other compatible TOTO seat models depending on the regional parts catalog.
Typical kit contents
Although TOTO does not publish a detailed component drawing for THX70V3, a hinge fixing kit of this type typically includes:
- Left and right hinge mounts
- Mounting bolts or screws
- Nuts or expansion fasteners
- Washers or spacers
- Decorative hinge covers (model-dependent)
If your interest is in repairing, reverse engineering, or manufacturing a compatible THX70V3, I can also provide a technical drawing showing the hinge fixing kit, recommended materials, and estimated dimensions based on standard TOTO hinge assemblies.
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