Deltana S44NRP 4" x 4" Square Hinge, Heavy-Duty, NRP, Steel (Pair)

NRP stands for non-removable pin. The S44NRP has a set screw arrangement that keeps the pin from being pulled once the door is closed, so nobody can knock the pin out from the hinge side and lift the door off. You need it any time the hinge barrel sits on the outside, or unsecured, side of the opening - out-swinging exterior doors, storage rooms, and anywhere the knuckles are reachable from the public side. On an in-swinging door with the barrel inside the room, NRP is not doing anything for you.

It's a residential-duty hinge in a heavy-duty steel build, plain bearing, meant for indoor applications. For a commercial opening with a closer, high cycle counts, or a heavy fire door, go to a bearing hinge instead - the Orca Hardware 4040 Series 4 x 4 square corner commercial plain bearing hinge or the Delaney CH401X 4 x 4 commercial ball bearing square corner hinge are the same footprint in a commercial product. If the commercial opening also needs anti-theft pin protection, the Hager BB1168 NRP is a full mortise ball bearing heavy duty hinge with a non-removable pin.

Deltana specs these steel hinges for indoor applications, so an exposed exterior opening is not the right use, even though the non-removable pin is an exterior-style feature. It works well on an interior door that needs pin security - a mechanical room, a storage closet, or a unit door inside a conditioned corridor. For weather exposure you want a non-ferrous or stainless hinge instead, such as the McKinney T2314 non-ferrous 5-knuckle hinge.

The Orca Hardware 4014 Series is a 4 inch by 4 inch plain bearing commercial hinge with a 1/4 inch radius corner at a medium duty rating, and the Delaney RH45xx is a 4 inch by 4 inch exterior residential hinge pair with a 5/8 inch radius. The Deltana S44NRP has square corners, so one of the radius patterns is the match where existing mortises were routed with a corner radius.

No. The Deltana S44NRP is a plain bearing steel hinge with no wiring provision. For power transfer through the hinge, the Command Access ETH-BB68 is a heavy duty 5 knuckle steel base energy transfer hinge, the ETH-CB70 is a 3 knuckle standard weight version at medium duty, and the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect at medium duty.

Screws are included: #12 x 1 inch wood screws for a wood door and jamb, and #12 x 1/2 inch machine screws for a metal frame. That covers both substrates out of the box, so you're not buying fasteners separately.

The unit of measure is a pair, so one order quantity gets you two hinges. A standard interior door usually runs three hinges, and heavier or taller doors run four, so plan accordingly - two pairs covers a four-hinge door and leaves a spare for a three-hinge opening.

No handing to specify. It's a full mortise butt hinge with square corners and symmetrical leaves, so the same pair works on a left or right hand door. What you do need to get right is which side of the opening the barrel ends up on, since the non-removable pin only protects you when the knuckles are exposed to the unsecured side.

The S44NRP is a plain bearing hinge, meaning the knuckles ride directly on each other with no bearing race. That is fine for a residential interior door with no closer. Add a door closer, hang a solid core slab, or put the door on a high-traffic path and the knuckles wear and start to squeak - that is when you move to a bearing hinge. In the same 4 x 4 square corner size, the Delaney CH401X is a commercial ball bearing hinge; at 3-1/2 x 3-1/2 the Emtek 94013 is a heavy duty ball bearing pair with square corners.

For interior unit and closet doors it works as a single standard: one size, 4 x 4 square corner, full mortise, sold by the pair, non-handed, with both wood and machine screws in the box so it hangs on wood jambs and steel frames alike. Order primed for paint if your doors get finished on site, polished brass where the existing hardware is brass. Where a door carries a closer or sees corridor-level traffic, swap in a bearing hinge for those openings rather than running this one everywhere.

The Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners, matching the Deltana S44NRP's 4 inch by 4 inch square corner dimensions. The S44NRP uses a plain bearing, so the Delaney is the choice where bearing knuckles are wanted on a higher-cycle door.

No. The Emtek 92013 is a heavy duty plain bearing hinge supplied as a pair with square corners in a 3-1/2 inch by 3-1/2 inch size, while the Deltana S44NRP is 4 inch by 4 inch. Both share plain bearing action and square corners and both ship as a pair, but the mortise cutout differs, so the Emtek only works where the door and jamb are prepped for 3-1/2 inch leaves.

Several steel full mortise hinges in the same family serve very different openings. The BEST BB855 is a heavy duty double weight concealed ball bearing prison hinge, the Hager 990 STEEL is a full surface prison hinge with a welded tip, and the Hager 1129 is a half mortise plain bearing hinge. The Deltana S44NRP is a full mortise hinge, so the half mortise and full surface patterns use different frame preparation entirely, and the detention hinges are built for security openings.

The Emtek 91013 is a residential duty plain bearing hinge pair, 3-1/2 inch by 3-1/2 inch with square corners in plated steel, and the Schlage Residential S3P1010 is a 3.5 inch by 3.5 inch square corner plain bearing mortise hinge sold in packs of three at a medium duty rating. Both are plain bearing like the Deltana S44NRP but in the smaller 3-1/2 inch size and without the non-removable pin the S44NRP carries.

The Deltana S44NRP is a plain bearing hinge with no spring action. The Stanley 2060R is a full mortise spring hinge with square corners in 4.5 inch by 4.5 inch on a ferrous steel base at a heavy duty rating. It keeps the full mortise mounting and square corner style of the S44NRP but needs a 4-1/2 inch mortise rather than the S44NRP's 4 inch by 4 inch.

Two: polished brass, and primed for paint. Primed is the one to order when the hinges are getting sprayed to match the door or trim color; polished brass is the finished option if the rest of the hardware on the opening is brass. Both are the same steel hinge underneath.