Deltana SS44058TTBB 4" x 4" x 5/8" Radius x Square Corners Hinges, Steel, Ball Bearing, Security Stud (Pair)

The SS44058TTBB is a 4 x 4 inch full mortise hinge with a 5/8 inch radius corner on one leaf and a square corner on the other. That combination drops into either prep: use it where the door or frame was routed with a 5/8 inch radius router bit, and the square leaf covers a chiseled square pocket. If both your door and frame are square-corner prepped, the radius leaf will leave a small gap at the corners of that pocket.

Handing matters on this one. The SS44058TTBB comes as a left hand or a right hand pair, so you order to the swing of the opening. Stand outside the door (the side you push from on an exterior door): if the hinges are on your left, it's left hand. Getting it wrong matters because of the corner style, one leaf is 5/8 inch radius and one is square, so the leaves are not interchangeable between door and frame the way a plain square-corner hinge would be.

No, they are two different things, and this hinge has the stud but not NRP. The security stud (Deltana calls it a security/locking tab) is a projection on one leaf that seats into a matching hole on the opposite leaf when the door is closed. Pull the pin and the door still cannot be lifted out of the frame, because the stud holds the leaves together. A non-removable pin instead uses a set screw to stop the pin coming out at all, and the SS44058TTBB is not an NRP hinge. For an out-swing exterior door where the barrel is exposed, the stud does the same job the NRP is usually specified for. If your spec literally calls out NRP, the Hager BB1168 is a non-removable pin full mortise ball bearing hinge.

Residential. The SS44058TTBB is a steel ball bearing hinge listed for residential use, so it suits entry doors, heavier interior slabs, and apartment unit doors rather than a high-traffic commercial opening. For a commercial door of the same 4 x 4 size, the Orca Hardware 4040 Series square corner and the Delaney CH401X commercial ball bearing hinge are both 4 x 4 commercial hinges. If the opening is a heavy commercial door, Don-Jo's HWBB74545 is a heavy weight full mortise ball bearing hinge at 4-1/2 x 4-1/2 inches.

Not without rework. A 4 x 4 hinge needs a mortise that is a half inch longer and a half inch deeper into the door edge than a 3-1/2 inch pocket, so you'd be extending the rout on both the door and the jamb. If you want a straight swap for an existing 3-1/2 inch prep, stay at that size: the Delaney RH35xx is a 3-1/2 x 3-1/2 steel residential hinge with the same 5/8 inch radius corner. If you're prepping new doors or already opening the mortise up, the 4 inch size gives you more screw purchase for a heavier slab.

The Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners, which matches the SS44058TTBB on size and bearing type. The Deltana SS44058TTBB carries a security stud, listed as a security/locking tab, and has 5/8 inch radius by square corners, so it covers openings where an interlocking tab is wanted on the leaves; the Delaney is the plain square-corner ball bearing equivalent for openings where that tab is not part of the requirement.

The Delaney RH40xx, a 4 inch by 4 inch residential hinge for Castlegate doors, is sold in pairs with the same 5/8 inch radius by square corner combination as the Deltana SS44058TTBB, so it drops into a frame mortise cut for that corner pattern. The Deltana SS44058TTBB is a ball bearing hinge in steel with a security stud; the Delaney RH40xx is the Castlegate-series counterpart when you are matching corner geometry rather than bearing type.

The Deltana SS44058TTBB is a residential-duty 4 inch by 4 inch steel hinge. For heavier commercial leaves, the Don-Jo HWBB74545 is a heavy weight full mortise ball bearing hinge at 4-1/2 inch by 4-1/2 inch in satin chrome, the Don-Jo HWBB75045 is the same heavy weight ball bearing hinge at 5 inch by 4-1/2 inch, and the Ives 3CB1HW is a steel heavy weight concealed bearing full mortise hinge with 3 knuckles. All three require a frame and door prepped for their larger or different leaf, not the 4 inch by 4 inch mortise the Deltana uses.

Ball bearing, and that is what the SS44058TTBB is. Bearings sit between the knuckles and carry the door's weight on a rolling surface instead of metal riding on metal, so a heavy slab, a door with a closer on it, or a door that gets cycled all day will not start to sag or squeal the way a plain bearing hinge does. Plain bearing is fine for a light interior door that opens a few times a day. If that's your opening, the Emtek 91013 and the Schlage Residential S3P1010 are both plain bearing residential mortise hinges.

The SS44058TTBB is sold as a pair, meaning two complete hinges. Standard practice on a 4 x 4 residential door is three hinges per leaf, so a single door takes two of these pairs and you will have one hinge spare, or order one pair per two doors if you're running two-hinge light interior slabs. Order all of them in the same handing as the openings you're hanging.

Zinc dichromate over a steel base, in both the left hand and right hand versions. That is a plated, corrosion-resistant coating rather than a decorative architectural finish, so it is the right choice where the hinge is painted over, hidden behind a closed door, or on a garage-to-house or utility door. If you want the hinge to match visible door trim, this is not a decorative finish hinge.

For a fleet of doors already running 5/8 inch radius prep at 4 inches, the Deltana SS44058TTBB pairs with the Delaney RH45xx 4 x 4 exterior residential hinge and the RH40xx Castlegate 4 x 4, both of which carry the same 5/8 inch radius corner style. The difference to watch is bearing type: the Deltana is ball bearing, which is what you want on the heavier or more frequently used openings in the set.

No. The SS44058TTBB is a plain mechanical steel hinge with no wire raceway through the barrel. Running power to an electrified lock or reading door position through the hinge takes a purpose-built unit: the Command Access ETH-CB70 is a 3 knuckle standard weight energy transfer hinge, the ETH-BB68 is the heavy duty 5 knuckle version, and the ETM-CB70 and ETM-BB68 add integrated door position sensing. BEST's CECB179-12C is a full mortise electrified hinge with a 12-wire quick connect. You'd typically use one of those at the top hinge location and mechanical hinges like the Deltana at the rest.

They share the 4 inch by 4 inch size, but the bearing is different. The Deltana SS44058TTBB is a ball bearing hinge; the Orca Hardware COM4040 is a square corner plain bearing commercial hinge rated medium duty, and the Orca COM4014 is the same 4 inch by 4 inch plain bearing hinge with a 1/4 inch radius corner. Choose the plain bearing versions where a non-bearing knuckle is acceptable, and note the COM4014 corner radius differs from the 5/8 inch radius by square corners on the Deltana.

The Ives 3CB1 is a steel 3-knuckle concealed bearing full mortise hinge rated medium duty, and the 3CB1-B is the same 3-knuckle concealed bearing full mortise hinge in a commercial grade; both hide the bearing inside the knuckle rather than showing a bearing race. The Deltana SS44058TTBB is a full mortise ball bearing hinge with a visible bearing at the knuckle, in 4 inch by 4 inch steel with a security stud. Match the leaf size and corner prep of whichever you select to the existing mortise.

No, they answer different requirements. The Command Access ETH-BB68 is an energy transfer hinge with a 5 knuckle heavy duty steel base, built to carry power through the hinge to an electrified lock, and the ETM-BB68 adds an integrated door position switch. The Deltana SS44058TTBB is a mechanical steel ball bearing hinge with a security stud and carries no wiring, so it suits a standard mechanical opening rather than one with an electrified device in the door.

No. The Deltana SS44058TTBB is a residential-duty 4 inch by 4 inch steel hinge with a security stud, which deters lifting a standard door but is not detention hardware. For a detention opening, the BEST BB855 is a heavy duty steel double weight concealed ball bearing prison hinge in the detention hardware line, the Stanley BB855 is a double weight prison hinge at 5 inch by 6 inch furnished with no holes and not swaged, and the Hager 990 STEEL is a full surface prison hinge at 3 inch by 4 inch with a welded tip.

The Deltana SS44058TTBB is a ball bearing hinge with no spring, so it does not return the door. The Stanley Security 2060R is a full mortise spring hinge with a square corner at 4.5 inch by 4.5 inch on a ferrous steel base, rated heavy duty, and is the self-closing option; it needs a mortise cut for the 4.5 inch leaf rather than the 4 inch by 4 inch prep the Deltana uses.

No. The Deltana SS44058TTBB is a full mortise hinge, meaning both leaves mortise into the door edge and the frame rebate. Where the frame cannot be mortised, the Hager 1129 is a half mortise plain bearing commercial hinge in 4-1/2 inch standard weight steel, and the Hager 990 STEEL is a full surface prison hinge at 3 inch by 4 inch with a welded tip. Those mount differently and are not interchangeable with a full mortise prep.

A mortise is required. The SS44058TTBB is full mortise, so both leaves recess into routed pockets, one in the door edge and one in the jamb, and the leaves sit flush with the surrounding wood. Nothing shows but the barrel when the door is shut. If your door or frame cannot be routed, a full mortise hinge is the wrong mounting type and you need a half mortise or full surface hinge instead.

For an interior residential opening, the Emtek 91013 is a residential plain bearing hinge pair at 3-1/2 inch by 3-1/2 inch in plated steel with square corners, and the Schlage Residential S3P1010 is a 3-1/2 inch by 3-1/2 inch square corner plain bearing mortise hinge sold three to a pack, useful when a door needs three hinges rather than a pair. The Deltana SS44058TTBB is the larger 4 inch by 4 inch pair in steel with ball bearings, supplied in zinc dichromate, and each unit covers one door as a pair.