Deltana DSB4R4NB 4" x 4" x 1/4" Radius Hinges, Ball Bearings, NRP, Solid Brass (Pair)

NRP stands for non-removable pin, and the DSB4R4NB is built with it. A set screw in the barrel captures the pin so it can't be tapped out from the hinge side. That matters on any out-swing door, where the barrel and knuckles face the exterior: without NRP, someone can drive the pin out and lift the door off its hinges regardless of what lock is on it. On an in-swing door the hinges are protected anyway, so NRP is optional there. If the door swings out, order it with NRP.

It depends on the corner shape of the pocket you already have. The DSB4R4NB is 4 x 4 inches with 1/4 inch radius corners, which is the profile a router and hinge template cut. If your current hinges are 4 x 4 with rounded corners, it drops straight in. If the existing mortise is square cornered (chiseled by hand, or a square corner hinge), a radius hinge leaves a small gap at each corner and you'd want a square corner hinge instead. Measure leaf height and width before ordering, not just the height.

No. The DSB4R4NB is a residential-duty hinge. Don't put it on a labeled fire door or a high-traffic commercial opening. For commercial work in the same 4 x 4 radius corner footprint, look at the Orca Hardware 4014 Series 4 x 4 x 1/4 inch radius corner commercial hinge; for a heavier or higher-cycle opening, a Don-Jo HWBB74545 heavy weight full mortise ball bearing hinge at 4-1/2 x 4-1/2 or a Hager BB1168 non-removable pin heavy duty ball bearing hinge, which keeps the NRP security feature in a heavy duty version.

Not without recutting. Going from 3-1/2 to 4 inches means the mortise gets a half inch taller on both the door edge and the jamb, and the screw holes land in different spots. If you're keeping the existing prep, stay at 3-1/2 inches: the Delaney 3-1/2 x 3-1/2 residential hinge pair or the Schlage Residential S3P1010 3.5 x 3.5 square corner mortise hinges match that size. If you're hanging new doors or already routing fresh, the 4 x 4 DSB4R4NB gives more leaf area for a heavier slab.

Electrified and monitor hinges read as ordinary full mortise hinges in a catalog but are not drop-in for the DSB4R4NB, which is a plain mechanical ball bearing hinge. The Command Access ETH-BB68 is an energy transfer hinge with a 5 knuckle heavy duty steel base, the Command Access ETM-BB68 adds an integrated door position switch, and the BEST CECB179-12C is a full mortise concealed bearing electrified hinge with a 12-wire quick connect. All of them require a wire raceway through the frame and a power supply. Spring hinges are the other false match: the Stanley 2060R at 4.5 by 4.5 is a full mortise spring hinge that closes the door on its own, which a ball bearing hinge does not do.

The Deltana DSB4R4NB has 1/4 inch radius corners and will not fill a square corner mortise. For a square corner prep at the same 4 by 4 size, the Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners, and the Orca Hardware 4040 Series is a 4 inch by 4 inch square corner commercial hinge in plain bearing, medium duty. Corner style is the one thing you cannot adapt in the field without recutting the mortise.

The DSB4R4NB is a residential-rated solid brass ball bearing hinge in a 4 by 4 size. For heavy duty commercial openings, the Hager BB1168 is a full mortise ball bearing heavy duty hinge that also carries a non-removable pin, and the Don-Jo HWBB84545 is a heavy weight full mortise ball bearing hinge at 4-1/2 by 4-1/2 in satin chrome. Note the size step: the Don-Jo is 4-1/2 by 4-1/2, so it needs a wider mortise and a heavier door edge than a 4 by 4 prep.

No. The DSB4R4NB is a full mortise hinge, meaning both leaves mortise into the door edge and the frame. For a half mortise condition, the Hager 1129 is a half mortise plain bearing commercial hinge at 4-1/2 inch standard weight steel. For a full surface condition, the Hager 990 STEEL is a full surface hinge at 3 by 4 with a welded tip, heavy duty. Mounting method has to match the frame prep before size or finish enters the decision.

Wood screws are specified with the hinge at #12 x 1-1/4 inch. That length bites the jamb and the door edge on a wood frame. On an exterior door, many installers swap at least one screw per jamb leaf for a longer one that reaches the framing stud behind the jamb, which is what actually carries a heavy door over time.

Solid brass, both the material and the substrate, not a plated steel base. That's the practical difference for coastal or high-humidity exterior openings: a plated steel hinge rusts once the plating is scratched, solid brass doesn't. Deltana finishes the brass in six ways here, including oil rubbed bronze and antique brass, both of which are living finishes on brass that change with handling.

On a heavy door, yes. The DSB4R4NB runs ball bearings between the knuckles instead of metal riding directly on metal, so the door swings without squeak and the knuckles don't wear oval under load. That's what you want on a solid core entry or any door with a closer on it. On a light hollow core interior door that gets opened a few times a day, a plain bearing hinge like the Emtek 91013 or the Orca Hardware 4040 Series 4 x 4 square corner is the simpler buy.

Handing isn't a factor. Full mortise butt hinges like the DSB4R4NB are symmetrical, so the same pair works on a left hand or right hand door, and you only decide which leaf goes on the jamb. What does change with the swing is whether you need the non-removable pin, and this hinge has it. Some electrified hinges are handed, but this one isn't.

For residential unit doors, yes, and the reason is the finish range rather than the hinge itself. The DSB4R4NB is a 4 x 4 solid brass residential hinge in six finishes, so one part number covers a building where some units are chrome and some are bronze, and the ball bearings hold up better than plain bearing hinges on doors that cycle all day. Where a door is a corridor or a stair door under a commercial spec, it isn't the right part, since this hinge is rated residential.

Corner shape and nothing else about how it hangs. The DSB4R4NB has 1/4 inch radius corners to match a router-cut pocket. A square corner 4 x 4, like the Delaney CH401X commercial ball bearing hinge or the Orca Hardware 4040 Series, suits a hand-chiseled mortise with sharp corners. Both are 4 x 4 and both mortise into the door edge and jamb the same way. Pick by what's already cut in the door, or by what your hinge template cuts if you're prepping new.

The DSB4R4NB carries a non-removable pin, which matters on an outswing exterior door where the barrel is exposed. On an interior door that exposure does not exist. The Orca Hardware 4014 Series covers the same 4 by 4 with 1/4 inch radius corners in a plain bearing commercial hinge, and the Delaney RH40xx is a 4 inch by 4 inch residential hinge for Castlegate doors with a 5/8 inch radius by square corner profile. Check the corner radius on the Delaney against your existing prep before ordering.

They are not the same hinge type. The DSB4R4NB is a full mortise ball bearing hinge with visible knuckles and a non-removable pin. Concealed bearing hinges such as the Ives 3CB1, a 3-knuckle concealed bearing full mortise hinge in medium duty, or the Ives 3CB1HW steel heavy weight concealed bearing full mortise hinge, hide the bearing inside the knuckle and present a smooth barrel. That changes the look of the barrel on a door where the hinge is meant to be seen, and Deltana solid brass hinges are made to accept decorative finials on the tip.

The DSB4R4NB ships as a pair, is residential rated, and is solid brass with ball bearings and a non-removable pin, in six finishes including oil rubbed bronze, brushed nickel, and polished chrome. The pair-packed alternatives run to plated steel and plain bearing: the Emtek 91013 is a residential plain bearing hinge pair at 3-1/2 by 3-1/2 with square corners in plated steel, and the Delaney RH45xx is a 4 inch by 4 inch bulk residential exterior hinge pair with a 5/8 inch radius. For a fleet, the deciding factors are corner radius against the existing door prep and whether you want brass or plated steel at the knuckle.

The DSB4R4NB is solid brass throughout, which is what makes it suitable where a plated steel hinge would be the wrong material. The McKinney T2314 is a non-ferrous hinge in standard weight with 5 knuckles, medium duty. Among the ball bearing peers, the Don-Jo HWBB85045 is a brass heavy weight full mortise ball bearing hinge at 5 by 4-1/2 in satin chrome, though that is a larger leaf than a 4 by 4 prep will take.

The NRP feature on the DSB4R4NB keeps the pin from being driven out on an outswing door, which is a different thing from a detention or high-security hinge. Purpose-built security hinges are a separate class: the BEST BB855 is a heavy-duty steel double weight concealed ball bearing prison hinge in the detention hardware series, and the Stanley BB855 is a double weight prison hinge at 5 by 6, furnished with no holes and not swaged. Those are specified for detention openings and are not interchangeable with a 4 by 4 residential brass hinge.

Six: oil rubbed bronze, brushed nickel, antique nickel, polished chrome, brushed chrome, and antique brass. If you're matching hinges to lever sets and door pulls already on the openings, that spread covers the common residential finish families. Deltana's solid brass hinges also accept decorative finials, so the barrel tip can be dressed up to match trim on a feature door.

The DSB4R4NB uses ball bearings between the knuckles; the plain bearing peers use a bearing surface without them. The Orca Hardware 4014 Series and 4040 Series are both 4 by 4 commercial hinges in plain bearing, medium duty, differing from each other only in corner style. The Emtek 92013 is a heavy duty plain bearing hinge pair at 3-1/2 by 3-1/2 with square corners in plated steel. Ball bearing construction is what is typically specified for doors carrying a closer or seeing high traffic.