Hager RC1749 Full Mortise Plai...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$13.42
Hager RC1749 Full Mortise Plain Bearing Residential Hinge, 4" by 4", Steel, 5 Knuckle, 1/4" Round Corners

Hager RC1749 Full Mortise Plain Bearing Residential Hinge 4" x 4" Steel 5-Knuckle with Round Corners

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Model: RC1749 3-1/2X3-1/2 US26
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Hager RC1749 Full Mortise Plain Bearing Residential Hinge 4" x 4" Steel 5-Knuckle with Round Corners

Professional Residential Door Hinge Solution

The Hager RC1749 full mortise plain bearing residential hinge delivers reliable door operation with professional-grade steel construction. This 4" x 4" hinge features 5-knuckle design with 1/4" round corners and 0.085 gauge steel construction with steel pin. ANSI A8134 certified for residential applications, the reversible design includes removable pin and template hole pattern for precise installation.

Professional Features & Benefits

  • Standard Door Size Compatibility: 4" x 4" dimensions accommodate most residential door applications with proper load distribution.
  • Durable Steel Construction: 0.085 gauge steel with steel pin provides long-lasting performance for residential door installations.
  • 5-Knuckle Design: Enhanced load distribution and smooth operation throughout the door swing cycle.
  • Round Corner Design: 1/4" (6 mm) radius round corners provide clean appearance and reduce stress concentration points.
  • Reversible Installation: Field-reversible design allows use on left-hand or right-hand door applications without separate inventory.
  • Removable Pin System: 0.234" diameter pin allows for easy door removal when needed for maintenance or replacement.
  • Template Hole Pattern: Standardized mounting pattern ensures consistent installation and compatibility with standard door preparation.
  • ANSI Certification: ANSI A8134 compliance meets light weight requirements of ANSI A156.1 for residential applications.
  • Reversible. Round corners 1/4" (6 mm) radius. Removable pin. Template hole pattern.

Technical Specifications

  • ANSI/BHMA: ANSI A8134
  • Bearing Type: Plain Bearing
  • Box Quantity: 3 each
  • Case Quantity: 48 each
  • Certifications: ANSI A8134
  • Commercial/Residential: Residential
  • Features: Reversible. Round corners 1/4" (6 mm) radius. Removable pin. Template hole pattern.
  • Finishes: 2D, US3, US4, ABA/US5, US10A, 10R, US15, US26, US26D, L1, L2
  • Gauge: 0.085
  • Knuckles: 5
  • Material: Steel with steel pin
  • Notes
  • Subcategory: Full Mortise Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Entry Doors
  • Interior Passage Doors
  • Bedroom and Bathroom Doors
  • Closet and Utility Room Doors
  • Multi-Family Housing Units
  • Light Commercial Residential-Style Applications
  • Door Replacement and Renovation Projects

Why Choose Hager Quality?

Hager residential hinges deliver professional-grade reliability with 0.085 gauge steel construction and ANSI A8134 certification for demanding residential applications. The 5-knuckle design with removable pin system and template hole pattern ensures consistent installation and long-term performance. Engineered to meet ANSI A156.1 light weight requirements where dependable door operation is essential.

Product Specs

Knuckles:
5
Subcategory:
Full Mortise Hinges
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Full Mortise Hinges
ANSI/BHMA:
ANSI A8134
Bearing Type:
Plain Bearing
Commercial/Residential:
Residential
Features:
Reversible. Round corners 1/4" (6 mm) radius. Removable pin. Template hole pattern.
Product Model:
RC1749
Product Function:
Plain Bearing
Product Substrate:
Steel with Steel Pin
Product Category:
Door Hinges and Pivots
Department:
Door Hardware
Corner Style:
1/4" Radius Corners

Hager RC1749 3-1/2X3-1/2 US26 – Frequently Asked Questions

1) Is the Hager RC1749 hinge heavy enough for a commercial entry door, or is it a residential hinge?
The RC1749 is a residential hinge. It's built to ANSI A8134, which is a light weight grade, and Hager lists it as residential. Fine for interior passage, bedroom, bath, closet and residential entry doors, including apartment units. For a commercial opening with closers and real traffic you want a standard or heavy weight bearing hinge instead, like the Don-Jo BB74545 full mortise ball bearing hinge or the McKinney TCA3386 heavy weight.
2) My door has hinges with rounded corners cut into the jamb. Will the Hager RC1749 drop into that mortise?
If the existing mortise is a 1/4 inch radius round corner, yes. The RC1749 is a round corner hinge with a 1/4 inch (6 mm) radius and a template hole pattern, so it lands in a standard prep. If your existing cutout has sharp square corners, this is the wrong corner style, you want a square corner hinge such as the Don-Jo BB74545 or the McKinney TCA2314. Measure the radius on the old hinge leaf before you order, some residential preps are 5/8 inch radius.
3) What sizes does the Hager RC1749 residential hinge come in?
Two sizes, 3-1/2 x 3-1/2 inches and 4 x 4 inches. The 3-1/2 inch is the usual size for 1-3/8 inch interior doors, the 4 inch for 1-3/4 inch doors and heavier residential entry doors. Match whatever is on the door now, since swapping sizes means recutting both the door edge and the jamb.
4) Do I need to order left hand and right hand hinges separately for the Hager RC1749?
No. The RC1749 is reversible, so one hinge works on a left hand or right hand door. That's why a property manager can stock one box and cover every unit in a building instead of splitting inventory by handing.
5) Plain bearing vs ball bearing hinge, which do I need for an apartment door?
Plain bearing, which is what the RC1749 uses, has no bearings between the knuckles. It's quieter and cheaper and it holds up fine on interior and residential doors that aren't carrying a closer. Once a door has a closer on it, or it's a heavy solid core or fire door swinging all day, go to a bearing hinge, the Don-Jo BB74545 ball bearing or the BEST 1900R concealed bearing are the type you want there. Closers on plain bearing hinges wear the knuckles and the door starts to sag.
6) My commercial jamb is prepped for 4-1/2 inch hinges. Can I use the Hager RC1749?
No. The RC1749 tops out at 4 x 4 inches, and a 4-1/2 inch prep leaves a half inch of open mortise plus screw holes that won't line up. For a 4-1/2 x 4-1/2 inch opening, look at the McKinney TCA2314 or TCA2317, the Don-Jo BB74545, or the BEST 1900R, all full mortise hinges in that size class. Check the corner style on the existing cutout too, most of those are square corner.
7) Can I use the Hager RC1749 on a door that needs an electrified hinge for a card reader or electric strike?
No. The RC1749 is a plain bearing full mortise hinge with a removable pin and no wire path through the barrel. For power transfer through the hinge, the ACSI 5BB1 is a 5-knuckle ball bearing full mortise hinge at 4-1/2 inch by 4-1/2 inch with concealed electric through-wire, 4 wire at 28 gauge, from the 1100 Series. On an opening with an electrified lock or exit device, one hinge in the set carries the through-wire and the remaining hinges are standard; the RC1749 can hold the non-electrified positions if the size and corner style match the rest of the set.
8) What is the difference between the Hager RC1749 hinge and the Don-Jo BB74545?
Both are 5-knuckle full mortise hinges, but they differ in corner style, bearing type and size. The RC1749 is a plain bearing hinge with 1/4 inch radius round corners, built in steel with a steel pin. The Don-Jo BB74545 is a ball bearing hinge at 4-1/2 inch by 4-1/2 inch in steel with square corners, rated standard duty. Corner style has to match the existing door and frame mortise: a round corner hinge drops into a routed pocket cut with a hinge router, while a square corner hinge suits a pocket chiseled square or a hollow metal frame prep. If the openings you are hinging are square-cut, the Don-Jo is the geometry that fits; if they are router-cut with radiused corners, the RC1749 matches.
9) The RC1749 is a residential hinge. What do I use on a commercial opening instead?
Step up to a bearing hinge built for commercial traffic. The RC1749 is a plain bearing hinge classified for residential use under ANSI A8134. For a commercial door, the McKinney TCA2314 is a standard duty 5-knuckle full mortise hinge at 4-1/2 inch by 4-1/2 inch, and the McKinney TCA3386 is the heavy weight version of the same square corner 5-knuckle full mortise pattern in the same size. For heavier or higher-frequency openings, the Dormakaba Stanley Security CB199 is a heavy duty full mortise concealed bearing hinge from the Architectural Hinges series. All three are square corner, so confirm the frame prep before ordering.
10) Is a concealed bearing hinge the same thing as the plain bearing RC1749?
No. The RC1749 uses a plain bearing, where the knuckles bear directly on each other with no bearing element between them. A concealed bearing hinge carries a bearing hidden inside the knuckle so the barrel looks like a plain bearing hinge from the edge of the door but runs on a bearing surface. The BEST 1900R is a steel full mortise concealed bearing standard weight hinge with a removable pin, rated medium duty, and the Stanley Security CB1960R is a full mortise concealed bearing standard weight hinge, also medium duty. If someone specified a concealed bearing hinge because they wanted the clean plain barrel appearance with a bearing inside, the RC1749 will look right but will not meet the bearing call.
11) The existing hinge measures 4-1/2 inches by 4 inches. Will the RC1749 work?
No, that is a different footprint. The RC1749 comes in 3-1/2 inch by 3-1/2 inch and 4 inch by 4 inch sizes, both square dimensions. A 4-1/2 inch by 4 inch hinge has a taller leaf than it is wide, which comes from a frame prep cut for the larger height. The Don-Jo BB74540 is a full mortise ball bearing hinge at 4-1/2 inch by 4 inch in satin chrome, standard duty, and matches that footprint directly. Measure leaf height first, then open width across both leaves with the hinge flat, before ordering either one.
12) Can I pull the pin on the RC1749 to take a door off without unscrewing the hinges?
Yes. The pin is removable, so you tap it out and lift the door off the frame with both leaves still screwed in place. That is the difference between a five minute door pull for a paint job or an appliance delivery and a full rehang. The 5-knuckle barrel means the pin drives out from the bottom in the usual way.
13) What finishes can I get the Hager RC1749 in, and can I match the levers already on my doors?
Eight finishes are orderable: flat black (L1), antique bronze (US10A), dark bronze (US10R), satin nickel (619), bright chrome (625), satin chrome (626), bright brass (605) and satin brass (606). Those are the standard BHMA finish codes, so a 626 hinge lines up with a 626 lever and a 605 hinge with polished brass trim. All eight are offered in both the 3-1/2 inch and the 4 inch size.
14) Is the Hager RC1749 steel or brass, and will it hold up in a bathroom or a coastal unit?
Steel leaves with a steel pin. That's the right economics for interior residential work, but plated steel is not a corrosion material. For a beach front entry, a pool door, or anywhere it sees salt or constant damp, move to stainless or brass, the Don-Jo BB94545 is a stainless steel full mortise hinge and the BB84545 is brass.
15) Does the Hager RC1749 hinge come with screws, and how many hinges do I need per door?
Wood screws come with the hinges. Plan on three per door for a standard residential opening, two only on a light closet or bi-fold. Hager packs the RC1749 three to a box, which is one door's worth, and 48 to a case, or 16 doors. That case count is how you size an order for a multi-family rehab without counting hinges one at a time.
16) Can I use the Hager RC1749 on a fire rated apartment entry door?
The RC1749 is a residential plain bearing hinge built to ANSI A8134, a light weight grade. Fire door assemblies are a different specification and typically call for a bearing hinge of standard or heavy weight, plus steel construction matched to the listed assembly. For that opening, look at bearing hinges such as the BEST 1900R or the McKinney TCA3386 heavy weight, and check them against the door label.
17) I need the same hinge but in brass or stainless instead of steel. What are my options?
The RC1749 is built in steel with a steel pin, and its finish range covers plated appearances including 605 bright brass, 606 satin brass, 619 satin nickel and 626 satin chrome over that steel base. If you need the base metal itself to change, the Don-Jo BB84545 is a full mortise ball bearing hinge at 4-1/2 inch by 4-1/2 inch in brass, satin chrome, and the Don-Jo BB94545 is the stainless steel version at the same 4-1/2 inch by 4-1/2 inch with square corners. Both are standard duty ball bearing hinges rather than plain bearing, and both are square corner, so the door prep and the bearing call both change with the material.
18) What hinge do I use if the door has a beveled edge instead of a square edge?
Door edge geometry decides the leaf. The BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge made for beveled edge doors, rated heavy duty. For square edge doors, the BEST FBB212 is a steel ball bearing heavy weight pivot reinforced hinge, standard duty, and the BEST CB248 is a steel full mortise concealed bearing swing clear hinge for square edge doors, medium duty, from the Swing Clear Hinges series. The RC1749 is a standard full mortise plain bearing hinge with 1/4 inch radius round corners and is not a pivot reinforced or swing clear pattern, so on an opening where the spec calls for either of those, the RC1749 is not the substitute.
19) For apartment interior doors across a building, is the RC1749 enough or should I standardize on a bearing hinge?
It depends on the door and the traffic. The RC1749 is a plain bearing hinge classified residential under ANSI A8134, reversible for left or right hand so one part covers every interior opening, with a removable pin for door removal during turns. On interior passage, bedroom and closet doors, that is the intended application. On corridor doors, unit entry doors and anything with a closer or heavier leaf, the McKinney TCA2317 is a square corner 5-knuckle full mortise hinge at 4-1/2 inch by 4-1/2 inch, standard duty, and the BEST 1900R is a medium duty concealed bearing standard weight hinge with a removable pin. Many buildings run the RC1749 on interior openings and a bearing hinge on the heavier doors rather than standardizing on one part throughout.
20) How thick is the steel on the Hager RC1749 hinge?
0.085 gauge steel. That's a light weight leaf, consistent with the ANSI A8134 residential grade it's built to, and it's why it belongs on hollow core and standard solid core residential doors rather than on a heavy commercial slab. A thicker leaf sits proud of a mortise cut for 0.085, so if you're mixing hinges on one door, keep the gauge consistent or the door will bind.
21) Is the RC1749 a full mortise hinge, meaning both leaves get cut into the door and frame?
Yes, both leaves mortise in, one into the door edge and one into the jamb, so the hinge sits flush and only the barrel shows when the door is closed. It uses a template hole pattern, so the screw holes match standard machine door and frame prep. If your frame has no mortise cut and you don't want to rout it, a full mortise hinge is the wrong style for that opening.
22) What's the difference between the 5-knuckle RC1749 and a concealed bearing hinge like the BEST CB1960R?
Both are full mortise. The RC1749 shows five knuckles with a plain bearing between them and a removable pin, a residential build. A concealed bearing hinge like the BEST CB1960R or the Stanley CB199 hides the bearing inside the barrel so the knuckle line looks like a plain hinge but carries commercial loads, the CB1960R is medium duty and the CB199 heavy duty. If the look matters and the door is heavy or has a closer, that's the trade.
How fast can I get the Hager RC1749 3-1/2X3-1/2 US26 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Hager RC1749 3-1/2X3-1/2 US26 come with a warranty?
Absolutely. The Hager RC1749 3-1/2X3-1/2 US26 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Hager RC1749 3-1/2X3-1/2 US26?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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