Deltana OK6050B Olive Knuckle 6" x 5" Hinge, Solid Brass (Each)

One hinge. The OK6050B is sold each, so a standard door taking three hinges needs three of them, all in the same hand and the same finish. Order the count for the whole opening in one go, since finish batches are easier to match when they come together.

Wood screws, #12 x 1-1/4 inch, are the fastener called out for the OK6050B. There is no machine screw option, so this is a hinge for a wood door and wood jamb, not for a hollow metal frame with tapped holes. Pilot drill for a #12 in hardwood, and if you are hanging into a soft jamb, plan on longer screws into the framing behind it for a heavy door.

It is a residential-duty hinge with a plain bearing, which means no ball or thrust bearing between the knuckles. That is fine for house doors, interior doors and cabinet work at normal use. For a high-traffic commercial opening or a heavy door in constant cycling, a bearing hinge is the better call. ZenSupply carries the BEST BB95 forged brass full surface olive knuckle in a medium duty rating, and the ABH 019OK olive knuckle in stainless steel for commercial openings.

The OK6050B is not a non-removable pin hinge. On an out-swinging exterior door the knuckles sit outside, so a removable pin is a security exposure. For that opening, either use a security stud or set screw arrangement, or specify an NRP hinge. Inswing doors and interior doors put the pin on the protected side and this is a non-issue.

The ABH 019OK is an olive knuckle hinge in stainless steel, where the Deltana OK6050B is solid brass. Stainless is the usual choice on exterior or coastal openings and in wash-down areas where a brass hinge would be maintained for appearance; the OK6050B, in brass, is offered in finishes from unlacquered brass and polished brass through oil rubbed bronze, polished chrome and paint black to match interior trim. If the opening is a residential interior door or cabinet and the decorative finish drives the selection, the OK6050B is the brass answer; if the specification calls out stainless, the 019OK is the equivalent hinge form in that material.

The BEST BB95 is a full surface olive knuckle hinge, so both leaves attach to the surface of the door and frame rather than into a routed mortise. The Deltana OK6050B is an olive knuckle hinge in solid brass installed with #12 x 1-1/4 inch wood screws and supplied handed, left or right. On a retrofit where the existing door and jamb are not prepped for a mortise leaf, or the substrate will not take a clean rout, the full surface BB95 is the one that goes on without new door prep.

An olive knuckle is a mortised hinge whose knuckle forms a single smooth olive shape at the door edge instead of the stacked barrel of a butt hinge. It is chosen for looks on finished millwork, entry doors and cabinet doors where the exposed knuckle is visible. A standard butt hinge is the simpler and cheaper choice where appearance is not driving the decision. Where an olive knuckle is what you want but the door is commercial, the ABH 019OK is a stainless steel olive knuckle and the BEST BB95 is a forged brass full surface version.

Solid brass, both the material and the substrate. That matters for a coastal or damp installation, where a plated steel hinge rusts from the core out once the plating is nicked, and it matters if you plan to strip or let an unlacquered finish age. If you need stainless instead for a wet or commercial environment, the ABH 019OK is a stainless steel olive knuckle.

Only if the existing hinges are the same 6 x 5 size and the same hand and finish. Olive knuckle sizing is not interchangeable, so measure a leaf on an installed hinge before ordering. Model OK6050B is the 6 x 5 in the Deltana Olive Knuckle line, so quote that number when you are standardizing a building and want the later orders to match the first.

The Deltana OK6050B is not a non-removable pin hinge, and the BEST BB95 is described as having a removable pin. Neither is the pin-secured option a security integrator would specify for an outswing exterior door where the barrel is on the unsecured side. Both the OK6050B and the BB95 are appropriate where the hinge barrel sits on the protected side of the opening, which is the normal case for the interior doors and cabinets the OK6050B is built for.

They are both olive knuckle hinges in brass, but they are not interchangeable in the opening. The BB95 is a full surface hinge in forged brass at medium duty; the Deltana OK6050B is solid brass, 6 inch by 5 inch, plain bearing, and handed left or right. Swapping a mortised OK6050B for a BB95 changes how the hinge attaches to the door and frame, so the door prep does not carry over. Order the BB95 as a full surface application, not as a drop-in for an existing OK6050B cutout.

For the Deltana OK6050B, yes - it is supplied as a handed hinge, left hand or right hand, in each of its finishes including PVD polished brass, brushed nickel, antique nickel, brushed chrome and antique brass. Olive knuckle hinges from other makers are ordered on their own conventions; the ABH 019OK and BEST BB95 are catalogued as olive knuckle series without a hand shown in their series data. When you are replacing one leaf of a pair on an existing door, confirm the hand of the OK6050B against the door swing before the order goes in, because the wrong hand will not hang.

It will work on cabinetry, and Deltana lists these for cabinets as well as doors, but 6 x 5 is a large hinge for a cabinet leaf. Check that the cabinet stile and the door edge can both take the mortise before committing. On a tall pantry or a full height cabinet door it is proportionate; on a standard base cabinet it is oversized.