Deltana SS33 3" x 3" Square Hinge, Stainless Steel (Pair)

That's exactly what the SS33 is built for. It's solid stainless steel through the leaf, not plated steel, so it resists corrosion far better than a standard steel hinge on a coastal or waterside opening. Deltana rates it residential duty, so think house doors, garden gates, and light exterior openings rather than a high traffic commercial entrance.

Ordering unit is a pair, so one order gets you two hinges. A typical residential door hangs on three hinges, so plan on two pairs per door unless you're only replacing a single leaf. Screws come with it: #9 x 3/4 inch wood screws, no machine screws, since this is a wood frame hinge rather than a hollow metal one.

Not the best choice there. The SS33 is a plain bearing hinge with a removable pin, no NRP option, so on an outswing door the pin sits on the outside and can be driven out. For an outswing opening where that matters, look at a hinge built with a non-removable pin such as the Hager BB1168 NRP full mortise ball bearing hinge. On an inswing door, where the barrel is on the secure side, the SS33 is fine.

The SS33 is a 3 x 3 inch hinge only, so it won't fill a 3-1/2 inch pocket. For a square corner 3-1/2 x 3-1/2 plain bearing replacement, the Emtek 91013 residential plain bearing hinge pair or the Schlage Residential S3P1010 square corner plain bearing mortise hinges (pack of three) are the same corner style in the larger leaf. Both are plated steel rather than stainless, so if the opening is exposed to weather that's the tradeoff you're making.

The SS33 is a residential duty plain bearing hinge. For an opening carrying commercial traffic, a bearing hinge built for that duty is the better match: the Orca Hardware 4040 Series is a 4 inch by 4 inch square corner plain bearing commercial hinge at medium duty, and the Orca Hardware 3535 Series is a 4-1/2 inch by 4-1/2 inch square corner ball bearing commercial hinge, also medium duty. Both keep the square corner prep the SS33 uses, so the mortise profile carries over even though the leaf size steps up.

The SS33 is cut for square corners, so a radius mortise needs a radius leaf. The Orca Hardware 3514 Series is a 3.5 inch by 3.5 inch plain bearing commercial hinge with a 1/4 inch radius corner, and the Orca Hardware 4014 Series is the same plain bearing build at 4 inch by 4 inch with a 1/4 inch radius corner. Both keep the plain bearing action the SS33 uses. On the residential side, the Delaney Interior Residential Hinges run 3-1/2 inch by 3-1/2 inch with a 5/8 inch radius and ship as a pair like the SS33, and the Delaney Exterior Residential Hinges carry the same 5/8 inch radius at 4 inch by 4 inch.

The SS33 is a residential duty plain bearing hinge. For a heavier leaf, the Emtek 92013 is a heavy duty plain bearing hinge pair at 3-1/2 inch by 3-1/2 inch with square corners in plated steel, keeping the same plain bearing action with a heavier rating. If the leaf warrants a bearing race instead, the Emtek 94013 is a heavy duty ball bearing hinge pair, also 3-1/2 inch by 3-1/2 inch with square corners in plated steel. Both step off the 3 inch leaf size the SS33 uses, so the mortise widens.

No handing to specify. The SS33 is a standard full mortise butt hinge with a removable pin, so the same hinge works on a left hand or right hand door, you just flip it. Order by size, corner style, and finish only.

Plain bearing works for light residential doors that don't cycle constantly, which is what the SS33 is rated for. Once you're hanging a heavy solid core or exterior slab, or the door sees traffic all day, a ball bearing hinge carries the load without wearing the knuckle. In that case the Orca Hardware 3535 Series 4-1/2 x 4-1/2 square corner ball bearing commercial hinge or the Delaney CH401X 4 x 4 commercial ball bearing square corner hinge are the ball bearing route. Note both are larger leaves, so the mortise gets cut deeper and taller.

Only where the doors are light interior or light exterior residential leaves. Deltana lists the SS33 as residential duty with a plain bearing, so it isn't the hinge for a corridor door, a stairwell door, or anything on a closer. Standardizing a multifamily property on one hinge usually means going to a commercial concealed or ball bearing hinge like the Ives 3CB1 3-knuckle concealed bearing full mortise or the McKinney MP79 MacPro 5-knuckle standard weight. The SS33 earns its place on balcony doors and coastal unit entries where corrosion, not cycle count, is the problem.

No. It ships with #9 x 3/4 inch wood screws and no machine screws, so it's set up for a wood jamb and a wood door. A hollow metal frame needs machine screws into tapped holes and, in most cases, a commercial full mortise hinge sized to the frame prep, such as the Stanley FBB191 5-knuckle full mortise standard weight in 4-1/2 x 4-1/2.

All three ship as pairs, which keeps counting simple across a fleet of doors. The Deltana SS33 is stainless steel, 3 inch by 3 inch, square corners, plain bearing, in polished stainless or brushed stainless. The Emtek 91013 is a residential plain bearing pair at 3-1/2 inch by 3-1/2 inch with square corners in plated steel. The Delaney Interior Residential Hinges are 3-1/2 inch by 3-1/2 inch steel with a 5/8 inch radius, and the Delaney Castlegate hinges are 4 inch by 4 inch with a 5/8 inch radius by square. Standardizing means picking one leaf size and one corner profile, since a square corner leaf and a radius leaf will not share a mortise.

They are close in function and differ in how they are packaged and sized. The Ives 1010RP is a steel plain bearing residential hinge with square corners, medium duty, sold as a set of three. The Deltana SS33 is a stainless steel plain bearing hinge with square corners at 3 inch by 3 inch, sold as a pair. On a door hung with three hinges the 1010RP set covers the opening in one order, while the SS33 pair covers two leaves; the SS33 uses a stainless base where the 1010RP uses steel.

Both are plain bearing square corner mortise hinges. The Schlage Residential S3P1010 is 3.5 inch by 3.5 inch, medium duty, and comes in a pack of three. The Deltana SS33 is 3 inch by 3 inch, residential duty, stainless steel, and comes as a pair in polished stainless or brushed stainless. A buyer matching an existing 3 inch mortise takes the SS33; one working a 3-1/2 inch prep and hanging on three hinges takes the S3P1010.

They are different bearing designs. The Ives 3CB1 is a steel 3-knuckle concealed bearing full mortise hinge at medium duty, where the bearing is hidden inside the knuckle. The Deltana SS33 is a plain bearing full mortise hinge in stainless steel at 3 inch by 3 inch. Both mount full mortise, so the prep concept is the same, but the barrel appearance and bearing action differ, and matching the look of existing SS33 hinges on adjacent doors means staying with the plain bearing stainless hinge rather than mixing in a concealed bearing barrel.

Several hinges in the same family serve openings the SS33 does not. The Command Access ETH-CB70 is an energy transfer hinge with a steel base that carries power through the hinge for electrified hardware, and the Command Access ETM-CB70 adds door position sensing on top of that. The BEST DAP-3 is a double acting pivot for commercial interior doors, which is a pivot rather than a mortise hinge. The Stanley Security 2060R is a spring hinge, full mortise with square corner at 4.5 inch by 4.5 inch, which closes the door on its own. The Deltana SS33 is a plain, non-electrified, non-spring plain bearing mortise hinge, so none of these swap for it one for one.

The SS33 mounts full mortise, cut into both the door leaf and the frame. Where the frame will not take a mortise leaf, the Hager 1129 is a half mortise plain bearing commercial hinge at 4-1/2 inch, keeping the plain bearing action, and the Hager 990 STEEL is a full surface prison hinge at 3 inch by 4 inch with a welded tip, also plain bearing. Both are heavy duty, so the leaf thickness and prep differ from the residential stainless SS33.

Two: polished stainless and brushed stainless. Both are the natural stainless surface rather than a plating, which is part of why the corrosion resistance holds up outdoors. Brushed is the one that blends with satin nickel and brushed chrome trim already on most doors; polished reads bright, closer to chrome.

The SS33 has no spring in it. It's a plain bearing butt hinge, so the door stays where you put it. If the opening needs to close itself off a hinge rather than a closer, that's a spring hinge job, for example the Stanley 2060R full mortise spring hinge in 4-1/2 x 4-1/2 square corner. Mixing one spring hinge with SS33 hinges on the same door isn't a substitute for the correct leaf size, since the 2060R is a larger 4-1/2 inch leaf.

The McKinney MP79 MacPro is a 5-knuckle full mortise hinge at standard weight. The Deltana SS33 is a full mortise hinge in stainless steel, plain bearing, residential duty, sold as a pair with square corners. Both mount full mortise into the leaf and frame. The SS33 is the stainless choice for coastal and outdoor exposure, while the MP79 is the standard weight 5-knuckle mortise hinge.