Emtek 91034 Residential Plain Bearing Hinges (Pair), 4" x 4" with 5/8" Radius Corners, Plated Steel

No. The 91034 has 5/8 inch radius corners, so in a square-cut mortise you would be left with an open gap at each corner. For square corner pockets, the Ives 1010RP is a steel plain bearing residential hinge with square corners sold in sets of three, and the Orca Hardware 4040 Series is a 4 x 4 square corner plain bearing hinge. Delaney also builds a 4 x 4 residential hinge for Castlegate in 5/8 inch radius by square, which pairs a radius leaf with a square leaf. The other direction works too: a radius hinge can go into a square mortise only if you round the corners with a chisel, which most people would rather not do on a finished jamb.

The 91034 ships as a pair with screws, and most interior and entry doors hang on three hinges, so plan on two packs per door and a spare leftover. Tall or heavy slabs often take four hinges, which is exactly two packs. If you are doing a whole house or a unit turn, count the hinges on the doors first and then divide by two, since ordering by the door instead of by the hinge is where people come up short.

Plain bearing, which is what the Emtek 91034 is, is built for normal residential traffic: bedroom, bath, closet, and a front door that gets opened a few times a day. The knuckles ride on each other with no bearing race. Step up to ball or concealed bearing when the door is heavy, gets constant use, or has a closer on it, because a closer loads the top hinge continuously and a plain bearing will start to squeak and wear. For those openings, Delaney builds a 4 x 4 commercial ball bearing hinge with square corners, Orca Hardware has a 4-1/2 x 4-1/2 square corner ball bearing commercial hinge, and the Ives 3CB1 is a medium duty concealed bearing full mortise hinge.

The 91034 is a residential duty hinge, so it belongs on unit interior doors and single-family openings, not on a corridor, stairwell, or any door that sees public traffic or carries a closer. For those, look at commercial duty: the Orca Hardware 4014 Series is a 4 x 4 plain bearing commercial hinge, though its corners are a 1/4 inch radius rather than 5/8, so the mortise corners will not match a residential jamb exactly. The Orca 4040 Series is the 4 x 4 square corner commercial plain bearing version, and the Ives 3CB1HW is a heavy weight concealed bearing full mortise hinge for the heaviest doors.

The Emtek 91034 is a plain bearing residential hinge and is not furnished as a security hinge. For an out-swing door where the pin is reachable from outside, the Deltana DE44R5TA is the closest geometric match: a 4" x 4" steel hinge with 5/8" radius corners, security type with tamper-resistant screws, sold in pairs, so it drops into the same 4" radius corner prep. Larger preps have options too - the Deltana CSB45N is a 4-1/2" x 4-1/2" square hinge with a non-removable pin sold in pairs, and the Hager BB1168 NRP is a non-removable pin full mortise ball bearing hinge rated heavy duty.

The Emtek 91034 is a 4" x 4" plain bearing hinge with 5/8" radius corners, sold in pairs with screws. The nearest same-size, same-corner alternates are Delaney's residential hinges: the DLY-RH45xx 4" x 4" bulk residential exterior hinge with 5/8" radius corners, sold in pairs, and the DLY-RH40xx 4" x 4" Castlegate residential hinge, which is furnished 5/8" radius by square, meaning one leaf is radiused and one is square. If the existing door and frame are both routed for 5/8" radius, the RH45xx drops into both mortises the way the 91034 does; the RH40xx suits a door and frame with mismatched preps.

The Emtek 91034 has 5/8" radius corners, which will not seat in a mortise routed square without corner chisel work. For a square corner prep in the same 4" x 4" size, the Orca Hardware ORC-COM4040 is a 4" x 4" square corner plain bearing hinge, and the Delaney DLY-CH401X is a 4" x 4" commercial ball bearing hinge with square corners. In residential square corner, the Ives 1010RP is a steel plain bearing residential hinge with square corners furnished as a set of 3. Match the corner to the router template already in the door and frame rather than reworking the mortise.

They are the same nominal size and the same bearing type but not the same corner. The Emtek 91034 is a 4" x 4" plain bearing hinge with 5/8" radius corners. The Orca Hardware ORC-COM4014 is a 4" x 4" plain bearing commercial hinge with 1/4" radius corners, and the Orca ORC-COM4040 is 4" x 4" plain bearing with square corners. A 1/4" radius leaf sits in a mortise cut with a tighter corner arc, so a 5/8" radius hinge and a 1/4" radius hinge do not interchange in the same routed pocket without rework. Confirm the radius on the leaf you are pulling out before ordering either one.

Up to 1-3/4 inch doors, which covers both the 1-3/8 inch interior slabs found through most of a house and the 1-3/4 inch entry and unit doors. Thickness is not what you order by here, though. The three things that decide fit are the 4 x 4 leaf size, the 5/8 inch radius corner, and the finish.

Handing is not part of the order. Full mortise butt hinges like the 91034 are symmetrical, so the same pair hangs a left hand or right hand door and works on an inswing or an outswing. What you do specify is the size, which is 4 x 4, the 5/8 inch radius corner, and the finish. Get those three right and the hinge is right.

Eleven finishes: Polished Brass Lifetime (US3), 606 Satin Brass, French Antique (US7), Polished Nickel (US14), Pewter (US15A), 619 Satin Nickel, Flat Black (US19), 625 Bright Chrome, 613 Satin Bronze Oil-Rubbed, Medium Bronze (MB) and Tumbled White Bronze (TWB). Those are the same finish codes Emtek uses across its knobs and levers, so ordering the hinge in the code already on your knobsets keeps the opening consistent. Order by the code, not the color name: Medium Bronze is 91034MB and Tumbled White Bronze is 91034TWB.

The 91034 is the 4 x 4 size. For 3-1/2 x 3-1/2 openings, Delaney sells a bulk steel residential interior hinge in 3-1/2 x 3-1/2 with the same 5/8 inch radius corner, sold in pairs, which is the direct size-down with the same mortise corner shape. If your mortises are square cut at that size instead, the Schlage Residential S3P1010 is a 3.5 x 3.5 square corner plain bearing mortise hinge in packs of three, and the Deltana DSB35 is a 3-1/2 x 3-1/2 square residential hinge sold in pairs.

The Emtek 91034 is furnished 4" x 4". For a 3-1/2" prep, the Delaney DLY-RH35xx is a 3-1/2" x 3-1/2" bulk steel residential interior hinge with 5/8" radius corners sold in pairs, which carries the same corner style as the 91034. If the smaller prep is square cornered, the Schlage Residential S3P1010 is a 3-1/2" x 3-1/2" square corner plain bearing mortise hinge in packs of 3, the Deltana DSB35 is a 3-1/2" x 3-1/2" square residential hinge sold in pairs, and the Orca ORC-COM3514 is a 3-1/2" x 3-1/2" plain bearing hinge with 1/4" radius corners.

No - the Emtek 91034 is a non-electronic hinge with a solid knuckle and no wire path. Power transfer to an electric lock or exit device needs a hinge built for it: the Command Access ETH-CB70 is a 3-knuckle standard weight steel base energy transfer hinge, the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect, and the Command Access ETM-CB70 adds door position sensing to the transfer hinge so the access control system knows whether the door is standing open. The Stanley CECB1900R54L is a handed version, furnished left-handed with 4 wires at 4-1/2" x 4-1/2" square corner, so handing has to be specified with that one.

No - the Emtek 91034 is a 4" x 4" hinge, and a 4-1/2" mortise leaves a gap at the top and bottom of the pocket plus screw holes that do not line up. For a 4-1/2" prep, the Deltana CSB45N is a 4-1/2" x 4-1/2" square hinge sold in pairs, the Orca ORC-COM3535 is a 4-1/2" x 4-1/2" square corner ball bearing hinge, the Stanley Security FBB191 is a 5-knuckle full mortise standard weight hinge at 4.5" x 4.5", and the Don-Jo HWBB74545 is a heavy weight full mortise ball bearing hinge at 4-1/2" x 4-1/2" in satin chrome. Measure the leaf height on the hinge you are removing before ordering.

No, and the difference is the prep, not the size. The Hager 1129 is a half mortise hinge - the leaf mortises into the door but the frame leaf applies to the face of a channel iron or metal frame rather than seating in a routed frame pocket. The Emtek 91034 is a full mortise hinge, with both leaves let into the door edge and the jamb. The two share a plain bearing knuckle, but a half mortise hinge on a wood frame prepped for full mortise leaves the frame leaf standing proud. Order the 1129 only when the frame is built for a surface-applied leaf.

Steel base with a plated finish, which is the standard construction for residential butt hinges and is fine on entry doors in a normal covered opening. In a coastal or heavily exposed location, plated steel is the wrong call and you want a non-ferrous hinge instead. The McKinney T2314 is a non-ferrous standard weight 5 knuckle hinge for that situation.

The Emtek 91034 is sold in pairs with screws included, so a standard three-hinge door takes two orders - a pair plus a pair, with one hinge spare. Packaging varies across the residential lines: the Ives 1010RP steel plain bearing residential hinge is furnished as a set of 3, and the Schlage Residential S3P1010 plain bearing mortise hinge comes in a pack of 3, both of which hang one door outright. The Delaney residential hinges follow the same pair packaging as the 91034 - the DLY-RH45xx 4" x 4" exterior and the DLY-RH35xx 3-1/2" x 3-1/2" interior are each sold in pairs. Count doors first, then leaves per door.

The Emtek 91034 is furnished across a decorative finish range including 613 Satin Bronze Oil-Rubbed, Flat Black (US19), Medium Bronze (MB), Tumbled White Bronze (TWB), French Antique (US7), Pewter (US15A), Polished Nickel (US14), 619 Satin Nickel, 625 Bright Chrome, Polished Brass Lifetime (US3) and 606 Satin Brass. Among the comparable steel hinges, the commercial lines run to plated utility finishes - the Don-Jo HWBB74545 and HWBB84545 heavy weight ball bearing hinges are furnished in satin chrome. If the door is a visible one where the hinge shows against the trim, match the finish family on the 91034 to the levers and the strike; if the hinge is hidden behind a closed door in a back-of-house opening, the finish matters less than the bearing and the corner.

Three families in the steel hinge aisle read as ordinary full mortise hinges and are not. Detention hinges - the BEST BB855 heavy-duty steel double weight concealed ball bearing prison hinge, the Stanley BB855 double weight prison hinge at 5" x 6" furnished with no holes and not swaged, and the Hager 990 STEEL full surface prison hinge, 3" x 4" with a welded tip - are made for secure facility doors and are prepped, sized and drilled unlike a residential hinge. The BEST DAP-3 is a double acting pivot for commercial interior doors, which swings both directions and mounts top and bottom rather than on the door edge. The Emtek 91034 is a residential full mortise plain bearing hinge in 4" x 4" with 5/8" radius corners, for a conventional single-swing wood door.