Deltana OK6038B Olive Knuckle 6" x 3-7/8" Hinge, Ball Bearing, Solid Brass (Each)

Handing is not optional on this one. The OK6038B is sold as a left hand or a right hand hinge, and an olive knuckle is a handed barrel design, so the wrong hand will not hang the door correctly. Stand outside the door (the side you push from is the outside), and the side the hinges are on tells you the hand. Every finish is offered in both hands, so pick the hand first and then the finish.

Each OK6038B is one hinge. A standard interior door usually takes three, and a taller or heavier door takes four, so count the leaves on the door you are replacing and order that many of the same hand and finish.

Deltana classes the OK6038B as residential. It suits interior and entry doors in homes, apartments, and light traffic openings. For a high traffic commercial door, a heavier commercial olive knuckle such as the ABH 019OK in stainless steel is the type to look at instead.

The OK6038B has a removable pin, not an NRP setup, so on an outswing exterior door the pin is accessible from the outside. For that opening use a hinge with a non-removable pin or add a security stud. On inswing doors, which is where most entry and interior doors sit, the removable pin is an advantage because you can lift the door off without unscrewing the leaves.

The ABH 019OK is the stainless steel olive knuckle hinge to look at when solid brass is not what the opening calls for. The Deltana OK6038B is a solid brass olive knuckle hinge in a 6 inch by 3-7/8 inch size with ball bearings, and it is a residential hinge; the ABH 019OK is a stainless steel commercial olive knuckle from the 019OK series. Both keep the same slim olive knuckle barrel look at the door edge, so the visual line through a set of doors stays consistent if you mix them across residential and commercial openings.

No. The BEST BB95 is a full surface olive knuckle hinge, meaning the leaves mount to the face of the door and frame rather than into a mortise, so the door prep is not the same as a Deltana OK6038B installation. The BB95 is forged brass with a removable pin and is rated medium duty; the OK6038B is solid brass with ball bearings in a 6 inch by 3-7/8 inch size. If the doors are already prepped for the Deltana, changing to the BB95 changes the prep, so confirm the mounting style before ordering either one.

An olive knuckle shows a single smooth oval barrel at the door edge rather than a stack of five knuckles. It is the traditional European look used on paneled doors, French doors, and restoration work. Function is the same as a butt hinge, the difference is appearance and that the barrel is handed. If you do not care about the profile and want the cheapest install path, a plain butt hinge is easier because it is not handed.

Ball bearing, yes. On a heavy solid core or a tall French door the bearings carry the load without the squeak and drag you get from a plain bearing hinge, and they keep the door from sagging over time. On a hollow core closet door it is more hinge than you need, but there is no downside to it.

Solid brass, both the leaves and the barrel. Brass will not rust the way a plated steel hinge does, which matters on a bathroom, a coastal entry, or anywhere with humidity. It also means the unlacquered brass option will patina naturally over time rather than flaking.

Two better fits for that traffic. The ABH 019OK is a stainless steel commercial olive knuckle, worth looking at where corrosion or wash down is a factor. The BEST BB95 is a forged brass full surface olive knuckle rated medium duty, with a removable pin, and because it is full surface it mounts without mortising the door or frame, which is useful on a retrofit where the existing prep is chewed up.

The BEST BB95 is specified with a removable pin. The Deltana OK6038B is not a non-removable-pin hinge either, so neither one is the choice when a security integrator needs an NRP hinge on an out-swinging door. For that condition you would specify a hinge carrying an NRP option; on an in-swinging door where the barrel is on the secure side, the pin arrangement on either the OK6038B or the BB95 is not the deciding factor.

They will read the same at the door edge, since both are olive knuckle hinges, but they are different materials and different duty classes. The Deltana OK6038B is solid brass and residential, offered in finishes including polished brass, unlacquered brass, antique brass, PVD polished brass, polished and brushed nickel, antique nickel, polished and brushed chrome, and paint black. The ABH 019OK is stainless steel and commercial. For a property manager standardizing a fleet, the practical split is to run the OK6038B on the apartment and suite doors where the decorative finish matters and the ABH 019OK on the commercial openings.

Yes, and it is the single most common ordering mistake on this type. The Deltana OK6038B is sold in left hand and right hand versions, and an olive knuckle hinge is not reversible in the field the way a standard butt hinge is. When you cross-reference to the ABH 019OK stainless steel olive knuckle or the BEST BB95 full surface olive knuckle, carry the handing of the existing opening across with the part number rather than assuming the substitute ships handed the same way.

Deltana packs matching finish wood screws with its solid brass hinges. What is not included is any strike or filler work, so if you are moving from a butt hinge with a different leaf width you will be patching the old mortise. Order one hinge per leaf position on the door.

The BEST BB95 olive knuckle is specified as medium duty. The Deltana OK6038B is a solid brass olive knuckle with ball bearings, classed as residential, in a 6 inch by 3-7/8 inch size. Ball bearings are what let a hinge carry a heavier door leaf without binding over time, so on a heavy decorative door the OK6038B bearing construction is the relevant spec; on a commercial opening the BB95 medium duty class or the stainless steel ABH 019OK is the way the door is more commonly specified.

Two to know by part number: the Deltana OK6038B is solid brass, and the BEST BB95 is forged brass. The third common option, the ABH 019OK, is stainless steel. For a distributor cross-referencing a brass request, the OK6038B and the BB95 are the brass-bodied olive knuckles and the 019OK is the stainless one, which matters because the base material determines which finishes the part can be supplied in.