1. Introduction
This manual provides essential information for the installation, operation, and maintenance of the Duravit Threaded Insert for Toilet Seat Attachment. This component is designed to securely fix toilet seats and covers for specific Duravit toilet series, including Starck 2 and Starck 3.
Please read this manual thoroughly before proceeding with installation to ensure proper function and longevity of the product.
2. Product Overview
The Duravit Threaded Insert (Part Number 0050501000) is a crucial component for securing your toilet seat. It is made from durable plastic and metal, ensuring a stable and long-lasting attachment.

Figure 2.1: Duravit Threaded Insert (Part Number 0050501000) in its original packaging. The packaging label indicates "Plastic rawlplug for fixing toilet seats" and the part number.
2.1. Package Contents
- 1 x Duravit Threaded Insert (Part Number 0050501000)
- Instruction Manual (this document)
2.2. Compatible Models
This threaded insert is compatible with various Duravit toilet series, including but not limited to:
- Duravit Starck 2 Series
- Duravit Starck 3 Series
- Other Duravit models as specified in your toilet's original documentation (e.g., Caro, Happy D, Medici, Metro, Starck 1, Tribeca).
3. Safety Information
Always observe the following safety precautions:
- Ensure all tools are used safely and correctly.
- Do not overtighten screws, as this may damage the insert or the toilet ceramic.
- Keep small parts away from children to prevent choking hazards.
- If unsure about any step, consult a qualified plumber.
4. Setup and Installation
This section details the steps required to install the Duravit threaded insert for your toilet seat.
4.1. Required Tools
- Screwdriver (appropriate type for your toilet seat screws)
- Rubber mallet (optional, for snug fit)
- Cleaning cloth
4.2. Installation Steps
- Preparation: Ensure the toilet bowl's mounting holes are clean and free of debris. Remove any old or damaged inserts if present.
- Insert Placement: Carefully insert the Duravit threaded insert into the mounting hole on the toilet ceramic. The wider end of the insert should face upwards.
- Secure Fit: Push the insert firmly into the hole. If necessary, gently tap the top of the insert with a rubber mallet until it is seated snugly and flush with the ceramic surface. The design ensures a tight fit to prevent movement of the toilet seat.
- Toilet Seat Attachment: Align your toilet seat's mounting posts with the newly installed threaded inserts. Insert the toilet seat screws through the mounting posts and into the threaded inserts.
- Tightening: Hand-tighten the screws initially. Then, use a screwdriver to tighten them securely. Do not overtighten, as this can strip the threads or crack the ceramic. The seat should be firm but not excessively rigid.
- Test Stability: Gently test the stability of the toilet seat to ensure it is securely fastened and does not wobble. Adjust screw tightness if necessary.
5. Operation
Once installed, the threaded insert functions passively to provide a stable anchor for your toilet seat. No active operation is required from the user.
- Ensure the toilet seat is properly aligned and secured to the inserts.
- Avoid excessive force or sudden impacts on the toilet seat, as this may stress the attachment points.
6. Maintenance
Regular maintenance helps ensure the longevity and proper function of the threaded insert and the toilet seat.
6.1. Cleaning
- Clean the area around the inserts and the toilet seat attachment points regularly with mild soap and water.
- Avoid abrasive cleaners or harsh chemicals, as these can damage the plastic and metal components.
6.2. Inspection
- Periodically check the tightness of the toilet seat screws. If the seat feels loose, gently retighten the screws.
- Inspect the threaded inserts for any signs of wear, cracking, or damage. If damage is observed, replacement may be necessary.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Toilet seat is loose or wobbles. | Screws are not tightened sufficiently. Insert is not seated properly. | Tighten the toilet seat screws. Ensure the threaded insert is fully seated in the toilet ceramic hole. If the insert is damaged, replace it. |
| Insert does not fit into the hole. | Incorrect insert size for the toilet model. Debris in the hole. | Verify the toilet model's compatibility with this insert (Part Number 0050501000). Clean the mounting hole thoroughly. |
| Screw spins freely in the insert. | Threads in the insert are stripped due to overtightening or wear. | The threaded insert is damaged and needs to be replaced. |
8. Specifications
| Attribute | Value |
|---|---|
| Brand | Duravit |
| Part Number | 0050501000 |
| Item Model Number | K12380 |
| Material | Plastic, Metal |
| Color | White |
| Product Dimensions | 0.98 x 0.79 x 0.79 inches |
| Item Weight | 0.387 ounces |
| Operation Mode | Manual |
9. Warranty and Support
For warranty information and technical support, please contact Duravit directly or refer to the official Duravit website. Keep your purchase receipt as proof of purchase.
Duravit Headquarters:
Werderstrasse 36
78132 Hornberg
Germany
For further assistance, please visit the Duravit official website.





