Round Door Knob With Lock

What this knob is

This is a round door knob with a built-in lock, made for interior doors where you want privacy and a key. The body is aluminum alloy with a silver finish that reads clean and understated against painted or stained doors. The round shape is easy to grip and suits bedrooms, bathrooms, offices, and any interior door that needs a lock.

The knob comes with the parts you need to install it: a latch, a strike plate, and screws. It is sold as a single knob, so you can replace one door or order several to match a set of doors in the same finish.

Sizes and fit

The knob is built for standard interior door thicknesses. Check your door before ordering.

Measure your door at the edge, not the face, to get the true thickness. If your door falls in the range above, this knob is made for it.

Color and finish

The knob comes in silver. The aluminum alloy body has a smooth, even tone that works with silver-tone hinges, latches, and other door hardware. If you are matching hardware across a room, keep to the same silver family for a consistent look.

How to fit it

Installing a round knob with a lock follows the same steps as most interior knobs.

1. Remove the old knob, latch, and strike plate.
2. Slide the new latch into the edge of the door and check that it lines up with the strike plate on the frame.
3. Fit the knob halves through the door hole and join them with the included screws.
4. Attach the strike plate to the door frame with the included screws.
5. Test the knob and the lock. The latch should move freely and the key should turn without force.

A few things help the job go well. Keep the screws in a small dish so they do not roll away. Do not overtighten the knob halves, since that can make the knob stiff. If the latch does not meet the strike plate, a small adjustment to the strike plate position usually solves it.

Care and use

Wipe the knob with a dry cloth to keep the finish clean. Avoid wet cloths and harsh cleaners, which can dull the silver tone over time. A quick wipe now and then is enough.

This knob is for interior doors within the thickness range above. It is not for exterior doors or for doors thicker than 1-3/4 in (45 mm).

Why choose a round knob

Round knobs are a familiar shape that fits the hand and works in most interiors. This one adds a lock, so it suits bedrooms, bathrooms, and home offices where privacy matters. The silver finish is neutral enough to sit with many door colors, and the included latch, strike plate, and screws mean you have what you need for a straightforward swap.

If you are updating several doors, order one knob per door. Each order is a single knob, so a three-door project needs three. Keeping the same finish across the doors gives a room a settled, finished look without extra effort.