Installing a lever door handle is a straightforward task that can be completed with a few simple tools and careful attention to detail. 

Tools and Materials You’ll Need

• Phillips and flat-head screwdrivers

• Tape measure

• Drill and drill bits (if preparing a new door)

• Chisel and hammer (for latch plate recess, if needed)

• Pencil or marker

• Allen key or hex wrench (for set-screw types)

• Clean cloth for wiping metal surfaces

Step 1: Prepare the Door

1. Check hole spacing — Standard handles fit a 54 mm (2-1/8 in.) bore hole and a 25 mm (1 in.) latch hole.

2. Verify handing — Determine whether the door is left-handed or right-handed. Most modern Lever Handles (like those from Hangfat Metal) are reversible.

3. Ensure door alignment — The door should close smoothly, and the latch edge should meet the strike plate cleanly.

Step 2: Install the Latch Mechanism

1. Insert the latch body into the edge hole with the beveled side of the latch bolt facing the strike plate.

2. Trace around the latch faceplate, then chisel a shallow recess so the faceplate sits flush with the door edge.

3. Secure the latch with the provided screws.

4. Verify that the latch operates freely by pulling and retracting it several times.

Step 3: Insert the Spindle

Slide the spindle bar through the latch mechanism. The spindle connects the interior and exterior levers.
Make sure it turns smoothly and that both sides align with the latch.

Tip: Hangfat Metal’s precision-machined spindles fit tightly into the latch hub, preventing wobble and ensuring smooth rotation.

Step 4: Mount the Exterior Lever

1. Position the exterior handle on the outside of the door, aligning the spindle through its square hole.

2. Fit any support posts or alignment tabs into the corresponding recesses on the latch plate.

3. Hold it in place while you prepare to attach the interior lever.

Step 5: Attach the Interior Lever

1. Place the interior handle onto the spindle from the inside of the door.

2. Align screw holes on both sides.

3. Insert the mounting screws through the interior side and tighten evenly using a screwdriver.

• Do not overtighten; excessive torque may strip threads or deform the rosette.

If your handle uses concealed screws, install them first, then snap or twist the decorative rosette cover into place for a seamless finish.

Step 6: Secure the Lever and Check Alignment

• Tighten any set screws (found beneath the lever neck) with an Allen key.

• Test the handle movement — it should rotate smoothly without resistance or looseness.

• Ensure the latch retracts and extends completely.

If it binds, slightly loosen the screws, realign, and retighten.

Step 7: Install the Strike Plate

1. Close the door gently to mark where the latch bolt meets the jamb.

2. Position the strike plate over this mark, outline its shape, and chisel a shallow recess.

3. Drill pilot holes and secure the plate with the supplied screws.

4. Test that the latch engages smoothly and that the door closes securely.

Step 8: Final Checks

• Confirm that both levers are firmly attached and level.

• Operate the handle several times to ensure consistent action.

• Wipe the surface with a soft, dry cloth to remove fingerprints or debris.

Maintenance Tip: Periodically tighten set screws and clean with mild detergent to preserve stainless-steel finishes.

Common Issues and Quick Fixes

Professional Installation Tips

• Use a template (often provided with new handles) for accurate hole spacing.

• When replacing an old handle, check that latch backset (distance from edge to center of bore hole) matches — commonly 60 mm or 70 mm.

• For heavy-use doors, apply a drop of medium thread locker on screw threads to prevent loosening.

• Choose handles with concealed fixings and solid spindles, such as Hangfat Metal’s stainless-steel series, for long-term reliability.

Conclusion

Installing a lever door handle is a quick DIY project that enhances both the function and style of your door.
By following these steps — from latch installation to final alignment — you’ll achieve a professional, secure fit that performs flawlessly for years.

For premium stainless-steel handles, architectural hardware, and OEM/ODM customization, explore Hangfat Metal’s full collection — where quality craftsmanship meets modern design.