Deltana DSB55NB 5" x 5" Square Hinges, Ball Bearing, NRP (Pair)

That's exactly what the NRP in DSB55NB is for. The hinge ships with a non-removable pin, so once the door is closed a set screw in the barrel locks the pin in place and it can't be tapped out from the hinge side. On an out-swinging door the knuckles sit outside, which is where pin-pulling is a concern, and NRP shuts that down. The ball bearing knuckles handle the weight of a solid exterior slab, and the plates are solid brass rather than plated steel, so they hold up outdoors.

The DSB55NB needs a square-cornered mortise 5 inches tall by 5 inches wide in both the door edge and the jamb, routed to a depth of .145 inch, which is the leaf thickness. Square corners mean a chisel or a square-corner template, not a router bit with a radius. If your existing prep has rounded corners you'll need to square them out, or use a radius-corner hinge instead.

Deltana rates the DSB55NB as residential, so for a corridor, stairwell, or any high-traffic commercial opening you want a commercial-rated hinge instead. Where it belongs is a heavy residential door: a solid entry slab, a big interior door in a home or an apartment unit door, where the 5 x 5 leaf and ball bearings carry the weight and the brass matches the rest of the trim. For a commercial opening at the same footprint, the Don-Jo HWBB75045 is a heavy weight full mortise ball bearing hinge at 5 x 4-1/2 inches, or Hager's BB1168 is a heavy duty full mortise ball bearing hinge also available with a non-removable pin.

No. A 5 x 5 hinge is an inch taller and an inch wider than a 4 x 4, so both the door edge and the jamb mortises have to be lengthened and deepened, and the frame side often needs backing behind the new cut. Going up a size is a re-prep, not a swap. If you want a true drop-in for an existing 4 x 4 square corner prep, look at a 4 x 4 square corner hinge such as the Delaney CH401X commercial ball bearing hinge or the Orca Hardware 4040 Series 4 x 4 square corner hinge. Same-size square corner is the thing to match on.

The DSB55NB is a mechanical brass hinge with no provision for wiring. When a door has to carry power to an electrified lock or an exit device, the hinge itself becomes the conductor: the Command Access ETH-BB68 is an energy transfer hinge with a 5 knuckle heavy duty steel base, and the ETH-CB70 is a 3 knuckle standard weight steel base energy transfer hinge rated medium duty. If the opening also needs to report whether the door is closed, the Command Access ETM-BB68 is an energy transfer monitor hinge with an integrated door position switch. The BEST CECB179-12C is another route - a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect for openings needing more conductors.

The DSB55NB is a full mortise, ball bearing, square corner hinge in solid brass, 5 inch x 5 inch, sold as a pair with a non-removable pin. The nearest match in another brand for bearing type and corner style is the Orca Hardware 3535 Series, a square corner ball bearing commercial hinge at 4-1/2 inch x 4-1/2 inch with a medium duty rating. The difference a carpenter needs to plan for is the leaf size: 4-1/2 inch leaves sit in a shorter mortise than 5 inch leaves, so it is a match on function, not a drop-in for a door already routed for 5 inch hinges.

The DSB55NB is a solid brass 5 inch x 5 inch ball bearing hinge with a non-removable pin, which is the security detail that matters on an outswing door where the barrel is exposed. In steel, the Hager BB1168 is a non-removable pin full mortise ball bearing hinge rated heavy duty. The two differ in base material and duty rating - the Deltana is brass and offered in ten finishes including oil rubbed bronze, polished chrome and unlacquered brass, while the Hager BB1168 is a heavy duty steel hinge.

Several hinges sit next to the DSB55NB in a search and prep completely differently. The DSB55NB is full mortise, meaning both leaves recess into the door and the jamb. The Hager 1129 is a half mortise plain bearing commercial hinge, which mortises into the door but surface applies to the frame. The Hager 990 STEEL is a full surface prison hinge at 3 inch x 4 inch with a welded tip - no mortise at all. The BEST DAP-3 is a double acting pivot for commercial interior doors, which is floor and head prep rather than jamb prep. And the Stanley 2060R in 4.5 inch x 4.5 inch is a full mortise square corner spring hinge, which self closes the door rather than swinging free.

No - the DSB55NB is a residential duty brass hinge, and its non-removable pin addresses pin pulling on an outswing door rather than the sustained abuse of a secure opening. Detention openings use a purpose-built hinge: the BEST BB855 is a heavy-duty steel double weight concealed ball bearing prison hinge, and the Stanley BB855 is a double weight prison hinge at 5 inch by 6 inch furnished with no holes and not swaged, so it is drilled and prepped to the specific frame. The Hager 990 STEEL is a full surface prison hinge at 3 inch x 4 inch with a welded tip, heavy duty.

Screws come with the hinges. You get #12 x 1-1/4 inch wood screws for hanging in a wood jamb and door, and #12 x 1/2 inch machine screws for a metal frame or a factory-tapped prep. Both are supplied, so you pick the set that matches what you're fastening into.

Ball bearings earn their keep on heavy doors and doors that swing constantly. The bearings sit between the knuckles and carry the load, so the hinge doesn't wear oval and start to squeak or sag. A solid wood or solid core exterior door at 5 x 5 inches is squarely in that territory, which is why the DSB55NB is built that way. For a light interior door that barely moves, a plain bearing hinge is enough, and Emtek's 92013 is a heavy duty plain bearing hinge at 3-1/2 x 3-1/2 inches with square corners.

Ten finishes: PVD Polished Brass, Polished Brass, Unlacquered Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. That covers matching to Deltana levers and knobs across a whole house or a unit turn. Note the distinction on the brass options: PVD Polished Brass holds its color, plain Polished Brass is lacquered, and Unlacquered Brass is left bare so it patinas over time.

No handing to specify. The DSB55NB is a full mortise butt hinge with two symmetrical leaves and a single pin, so the same hinge hangs a left hand or right hand door either way you flip it. The one thing to get right at order time is the finish, since that's the only choice on this hinge. Handing only comes into play on hinges built with a fixed orientation, like the Stanley CECB1900R electrified hinge, which is ordered specifically left-handed.

Solid brass through the whole leaf, not a plating over steel. Both the material and the substrate on the DSB55NB are brass, which is why it can be offered in Unlacquered Brass and left to patina, something a plated hinge can't do. It also means no rust bleed on a coastal or wet exterior opening. By contrast, Emtek's 94013 heavy duty ball bearing hinges are plated steel, and most of the commercial ball bearing hinges in this size are steel with a finish applied.

For residential unit doors it works well as a fleet standard: one model number, ten finishes, square corner 5 x 5 prep, and NRP on every one so out-swinging unit doors are covered without ordering a separate part. Buy it as pairs and figure two pairs per three-hinge door. Where it stops being the right call is any shared corridor, stair, or amenity door, since Deltana lists this as residential duty; those openings should get a commercial heavy duty hinge like the Don-Jo HWBB85045 brass heavy weight ball bearing hinge.

On a light interior door that is not carrying a closer, a plain bearing hinge is a common choice and costs less mortise depth of nothing - the swap is about the bearing, not the prep. The DSB55NB uses ball bearings; plain bearing options include the Emtek 91013 residential plain bearing hinge in 3-1/2 inch x 3-1/2 inch with square corners in plated steel, the Schlage Residential S3P1010 3.5 inch x 3.5 inch square corner plain bearing mortise hinge sold in packs of three, and the Orca 4040 Series 4 inch x 4 inch square corner plain bearing commercial hinge. All three keep the square corner, so the router template style carries over, but none of them is 5 inch x 5 inch - the mortise length changes.

Square corner prep is the constraint when standardizing, because a radius corner hinge will not sit in a square routed mortise without rework. The Deltana DSB55NB covers 5 inch x 5 inch with square corners. Orca Hardware offers square corner in two sizes: the 4040 Series at 4 inch x 4 inch with plain bearings and the 3535 Series at 4-1/2 inch x 4-1/2 inch with ball bearings, both medium duty. Emtek offers square corners at 3-1/2 inch x 3-1/2 inch across several builds - the 91013 residential plain bearing, the 92013 heavy duty plain bearing, and the 94013 heavy duty ball bearing, all plated steel and sold as pairs. Delaney offers a 4 inch x 4 inch commercial ball bearing hinge with square corners as the CH401X.

The DSB55NB carries its ball bearings between the knuckles, where they are visible as bearing rings in the barrel, and it is finished as a decorative item in ten options from polished brass to paint black. A concealed bearing hinge hides the bearing inside the knuckle for a smooth barrel line: the Ives 3CB1 is a steel 3-knuckle concealed bearing full mortise hinge rated medium duty, and the 3CB1HW is the heavy weight version of the same 3-knuckle concealed bearing full mortise build. Hager's 920 takes the same idea to a 2 knuckle steel concealed plain bearing full mortise hinge at medium duty. Choose on barrel appearance and duty; all four are full mortise like the Deltana.

The DSB55NB is a solid brass ball bearing hinge with a non-removable pin, which is specified for entry doors and finish-critical openings. On plain interior doors in a rental turn, a simpler steel residential hinge does the job: Delaney's RH35xx is a 3-1/2 inch x 3-1/2 inch bulk steel residential interior hinge with a 5/8 inch radius corner sold as a pair, and the RH45xx is the 4 inch x 4 inch bulk residential exterior version, also 5/8 inch radius. The Ives 1010RP is a steel plain bearing residential hinge with square corners, medium duty, sold in sets of three. Note the corner difference - the Delaney pairs are 5/8 inch radius, so they need a rounded mortise rather than the square one the Deltana takes.

The DSB55NB is a solid brass full mortise hinge. In steel, the Stanley FBB191 is a 5-knuckle full mortise standard weight hinge at 4.5 inch x 4.5 inch, and McKinney's MacPro line covers the same knuckle count with the MP79 full mortise 5-knuckle standard weight hinge and the MPB79 MacPro 5-knuckle standard weight hinge. All three are standard or heavy duty steel builds rather than a decorative brass one, so the finish range is narrower but the base metal is stiffer under a heavy slab.

Yes, the DSB5 Series solid brass hinges accept Deltana decorative finials, so you can swap the flat tips for ball, urn, or steeple tips to match a period interior. One caveat worth knowing: the DSB55NB is the non-removable-pin version, and NRP is there to stop the pin coming out, so pin-tip changes are meant to be done before hanging, not after.

The DSB55NB has a standard round barrel in solid brass with square corner leaves, offered in finishes including antique brass, antique nickel, brushed nickel and brushed chrome. If the barrel profile is part of the design intent, the McKinney SQ3331 is a square barrel 2-knuckle decorative hinge at 4-1/2 inch by 4-1/2 inch, standard duty - a squared barrel reads very differently against a modern casing than a round one. McKinney's T2314 is a non-ferrous 5 knuckle standard weight hinge, medium duty, if the requirement is a non-ferrous base like the Deltana's brass rather than a plated steel one.