1. Product Overview
The Moen 100621 Handle Hub Kit is a genuine Moen replacement part designed for the cold handle of centerset mini-widespread faucets. This kit ensures proper function and a secure fit for your faucet handle, maintaining the aesthetic and operational integrity of your Moen fixture.
Figure 1: Moen 100621 Faucet Handle Hub Kit. This image displays the replacement part, which is a chrome-finished component essential for securing the cold water handle on compatible Moen centerset mini-widespread faucets.
2. Safety Information
- Always turn off the main water supply to the faucet before beginning any installation or maintenance.
- Wear appropriate personal protective equipment, such as safety glasses, to prevent injury.
- Ensure all connections are secure to prevent leaks. Do not overtighten components, as this can cause damage.
- If you are unsure about any step, consult a qualified plumber.
3. Package Contents
Verify that all components are present before beginning installation. The Moen 100621 Handle Hub Kit typically includes:
- Handle Hub (1)
- Mounting Hardware (e.g., screws, washers) (Quantity as required for assembly)
Note: Specific contents may vary slightly. Refer to the packaging for a precise list.
4. Installation Instructions
This section outlines the general steps for replacing a faucet handle hub. Specific faucet models may have slight variations.
Tools Required:
- Phillips head screwdriver
- Adjustable wrench (optional, for supply lines)
- Pliers (optional)
- Safety glasses
Procedure:
- Turn Off Water Supply: Locate the cold water shut-off valve under the sink and turn it clockwise until the water flow stops completely. Turn on the faucet handle to drain any remaining water.
- Remove Handle Cap (if applicable): Some Moen handles have a decorative cap that covers the handle screw. Carefully pry this off using a small flathead screwdriver or your fingernail.
- Remove Handle Screw: Use a Phillips head screwdriver to loosen and remove the screw securing the handle to the existing hub.
- Remove Handle: Carefully lift the handle straight up and off the faucet body.
- Remove Old Hub: The old hub may be threaded or secured with additional screws. Unscrew or unfasten the old hub from the faucet body. Note its orientation for proper installation of the new hub.
- Install New Hub: Place the new Moen 100621 handle hub onto the faucet body, ensuring it is correctly oriented. Secure it with any provided mounting hardware.
- Reattach Handle: Place the faucet handle back onto the new hub, aligning it properly.
- Secure Handle Screw: Insert and tighten the handle screw with the Phillips head screwdriver. Do not overtighten.
- Replace Handle Cap (if applicable): Snap the decorative cap back into place.
- Restore Water Supply: Slowly turn the cold water shut-off valve counter-clockwise to restore water flow.
- Check for Leaks: Inspect all connections for any signs of water leakage. If leaks are present, gently tighten connections.
5. Operating Instructions
After successful installation, the Moen 100621 Handle Hub Kit allows for smooth and secure operation of your faucet's cold water handle. Simply turn the handle to control the flow and temperature (if applicable for a mixing faucet, though this is for a cold handle) of the water as intended by your faucet design.
- Turning On/Off: Rotate the handle to open or close the cold water flow.
- Flow Control: Adjust the handle position to achieve the desired water flow rate.
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your Moen faucet handle hub.
- Cleaning: Clean the chrome finish with a soft, damp cloth. Avoid abrasive cleaners, harsh chemicals, or scouring pads, as these can damage the finish.
- Periodic Inspection: Periodically check the handle for any looseness. If the handle feels loose, gently tighten the handle screw (refer to installation step 8).
- Leak Detection: Regularly inspect the area around the faucet for any signs of water leaks. Address any leaks promptly to prevent water damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Handle is loose or wobbly. | Handle screw is loose. | Remove handle cap (if present) and tighten the handle screw with a Phillips head screwdriver. Do not overtighten. |
| Water leaks from around the handle base. | Hub not seated correctly or damaged O-rings/gaskets (not part of this kit, but related). | Ensure the handle hub is properly installed and secured. If leaks persist, the issue may be with internal faucet components (e.g., cartridge, O-rings) which are not part of the 100621 kit and may require a different replacement part or professional assistance. |
| Handle does not turn smoothly. | Friction between handle and hub, or issue with the faucet cartridge. | Ensure the handle is correctly seated on the hub. If the issue persists, the problem likely lies with the faucet's internal cartridge, which may need cleaning or replacement. |
8. Specifications
| Model Number: | 100621 |
| Brand: | Moen |
| Part Type: | Faucet Handle Hub Kit |
| Application: | Cold handle for centerset mini-widespread faucets |
| Finish: | Chrome |
| Item Weight: | 8 ounces (0.5 Pounds) |
| Product Dimensions: | 2.44 x 1.94 x 3.75 inches |
| UPC: | 026508129838 |
| GTIN: | 026508129838 |
| Special Feature: | Easy to Install |
9. Warranty and Support
For detailed warranty information, please refer to the documentation included with your original Moen faucet or visit the official Moen website. Moen products are typically backed by a limited lifetime warranty against leaks, drips, and finish defects to the original homeowner.
For technical support, replacement parts, or further assistance, please contact Moen Customer Service or visit their official website:
- Moen Official Website: www.moen.com
- Moen Store on Amazon: Visit the Moen Store





