Hager AB850 Full Mortise Heavy...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$137.57
$86.78
Hager Hager AB850 Full Mortise Concealed Anti-Friction Bearing Hinge, Heavy Weight, 3 Knuckle HAG-AB850

Hager AB850 Full Mortise Heavy Weight Concealed Anti-Friction Bearing Hinge with 3 Knuckle Design

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Model: HAG-AB850 4-1/2x4-1/2 US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$137.57
$86.78
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Hager AB850 Full Mortise Heavy Weight Concealed Anti-Friction Bearing Hinge with 3 Knuckle Design

Professional Heavy-Duty Door Hinge Solution

The Hager AB850 Full Mortise Concealed Anti-Friction Bearing Hinge delivers heavy-duty performance for high-frequency commercial door applications. This 3-knuckle design features concealed anti-friction bearings for smooth, quiet operation and is constructed with brass or stainless steel materials with stainless steel pins. ANSI A2111 (Brass) and ANSI A5111 (Stainless Steel) certified for professional installations requiring reliable heavy-weight door support.

Professional Features & Benefits

  • Heavy-Duty Construction: Brass with stainless steel pin or stainless steel with stainless steel pin materials provide exceptional durability for commercial applications.
  • Concealed Anti-Friction Bearing Design: Smooth, quiet operation with reduced wear for extended service life in high-frequency applications.
  • 3-Knuckle Configuration: Optimal strength and alignment for heavy weight doors requiring reliable support and operation.
  • Full Mortise Installation: Both leaves mortised for clean, professional appearance with maximum door and frame integration.
  • Non-Rising Removable Pin: Flush pin and plug design allows for easy maintenance and door removal when required.
  • ANSI Certified Performance: ANSI A2111 (Brass) and ANSI A5111 (Stainless Steel) compliance ensures professional-grade reliability and code compliance.
  • Versatile Finish Options: Available in US3, US4, US5, US9, US10, US15, US15A, US19, US26, and US26D finishes for architectural coordination.
  • Electric Modification Ready: Compatible with EMN (Electric Monitor Only), ETW (Electric Through-Wire Only), ETM (Electric Through-Wire with Monitoring), and Quick Connect options.
  • Non-rising removable pin with flush pin and plug.

Technical Specifications

  • ANSI/BHMA: ANSIA2111 (Brass), ANSIA5111 (Stainless Steel)
  • Applications: For use on heavy weight doors or doors requiring high frequency service.
  • Certifications: ANSI A2111 (Brass), ANSI A5111 (Stainless Steel).
  • Commercial/Residential: Commercial
  • Duty Level: Heavy Duty
  • Electric Modifications: EMN (Electric Monitor Only), ETW (Electric Through-Wire Only), ETM (Electric Through-Wire with Monitoring), Quick Connect
  • Features: Full Mortise, Heavy Weight, Concealed Anti-Friction Bearing
  • Finishes: US3, US4, US5, US9, US10, US15, US15A, US19, US26, US26D.
  • Knuckles: Material : Brass with Stainless Steel Pin, Stainless Steel with Stainless Steel Pin.
  • Material: Brass with Stainless Steel Pin, Stainless Steel with Stainless Steel Pin.
  • 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

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Hager Quality?

Hager AB850 hinges deliver professional-grade reliability with concealed anti-friction bearing construction and heavy-duty materials rated for high-frequency commercial service. ANSI A2111 and ANSI A5111 certified performance ensures code compliance and dependable operation. Engineered for demanding commercial applications where smooth operation and long-term durability are essential.

Product Specs

Subcategory:
Full Mortise Hinges
Knuckles:
3
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Full Mortise Hinges
Features:
Full Mortise, Heavy Weight, Concealed Anti-Friction Bearing
ANSI/BHMA:
ANSI A2111 (Brass), ANSI A5111 (Stainless Steel)
Duty Level:
Heavy Duty
Commercial/Residential:
Commercial
Product Model:
AB850
Product Function:
Concealed Bearing
Product Category:
Door Hinges and Pivots
Product Substrate:
Brass with Stainless Steel Pin, Stainless Steel with Stainless Steel Pin
Department:
Door Hardware

Hager HAG-AB850 4-1/2x4-1/2 US26D – Frequently Asked Questions

1) What size hinges does the Hager AB850 come in, and which one do I need for my door?
The AB850 is offered in seven sizes: 4.5 x 4, 4.5 x 4.5, 5 x 4, 5 x 4.5, 5 x 5, 6 x 4.5 and 6 x 5 inches. The first number is the hinge height, the second the open width. Height is driven by door thickness and weight, width by how far the door has to clear the trim or how thick the door leaf is. On a standard 1-3/4 inch commercial door the 4.5 x 4.5 is the usual pick; 5 inch and 6 inch heights come into play on thicker or heavier leaves, and the wider open widths (5 inch, 6 x 5) are what you order when the door needs to swing clear of deep casing or a reveal.
2) Is the Hager AB850 heavy enough for a high-traffic commercial door?
That is exactly what it is built for. The AB850 is a heavy duty, heavy weight hinge for commercial openings, and Hager specifies it for heavy weight doors or doors seeing high frequency service. The concealed anti-friction bearing carries the load instead of the knuckle faces, which is what keeps a heavily used door from sagging and squealing over time. For an office lobby, a school corridor, a hospital or a retail entry door that cycles all day, this is the right class of hinge.
3) Does the Hager AB850 meet ANSI/BHMA requirements for a spec job?
The AB850 is certified to ANSI A2111 in brass and ANSI A5111 in stainless steel, so which certification applies depends on the material you order. If the hardware schedule calls out one of those two designations, name the matching material when you place the order.
4) Can I get the Hager AB850 with wiring through the hinge for an electric lock or door position switch?
Yes. The AB850 accepts four electric modifications: EMN for monitoring only, ETW for through-wire only, ETM for through-wire with monitoring, and Quick Connect. EMN gives you a door position signal for an access control panel. ETW is what you use to feed power across the opening to an electrified lock or exit device. ETM does both in one hinge. Quick Connect saves the installer splicing at the frame. The electric modification is specified when you order, not added later in the field.
5) What is a full mortise hinge and will it work on my door and frame?
Full mortise means both leaves are recessed, one into the door edge and one into the frame rebate, so nothing stands proud when the door is shut. It requires that the door and frame already be mortised for hinges, which is the normal condition on a hollow metal or prepped wood commercial opening. If your door or frame is not mortised, or the door edge cannot be routed, a full mortise hinge like the AB850 is the wrong choice and you want a half surface, half mortise or pivot arrangement instead.
6) What is the heavy weight concealed bearing equivalent to the Hager AB850 from another brand?
The closest cross-brand match ZenSupply stocks is the Stanley Security CB199 full mortise concealed bearing heavy weight hinge, which is the same construction class: full mortise, concealed bearing, heavy duty. The BEST CB223 is also stainless steel concealed bearing heavy weight, but it is a pivot reinforced hinge for beveled edge doors, so it is a substitute only if your door has a beveled edge and the opening calls for pivot reinforcement.
7) Which hinge clears the opening width for an ADA or gurney path where the Hager AB850 does not?
A swing clear hinge is the one to use. The BEST CB248 is a steel full mortise concealed bearing swing clear hinge for square edge doors, in the Swing Clear Hinges series, rated medium duty. It swings the door fully out of the opening to recover the width the door leaf would otherwise occupy. The AB850 is a conventional full mortise heavy weight hinge rated heavy duty, so it holds the leaf within the opening. Check the door weight against the medium duty rating when the clear width drives the choice.
8) What is the closest heavy weight concealed bearing full mortise hinge to the Hager AB850?
The Stanley Security CB199 is the nearest match in construction and duty. Like the AB850, it is a full mortise concealed bearing hinge rated heavy duty, so it addresses the same heavy weight and high frequency openings. The AB850 is offered in brass with a stainless steel pin or stainless steel with a stainless steel pin, carries ANSI A2111 for brass and ANSI A5111 for stainless steel, and uses a 3 knuckle configuration. The CB199 sits in the Architectural Hinges series. Confirm size and finish against the opening before ordering either.
9) What hinge should be used on a beveled edge door instead of the Hager AB850?
The BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge made for beveled edge doors, and it holds the same heavy duty rating as the AB850. The AB850 is a full mortise heavy weight concealed anti-friction bearing hinge with a 3 knuckle design; the CB223 adds pivot reinforcing and is specified by door edge profile. Verify the door edge, bevel or square, before selecting.
10) Which hinge carries the through-wire already installed rather than ordering the Hager AB850 with an electric modification?
The ACSI 5BB1 is a 5 knuckle ball bearing full mortise hinge, 4-1/2 inch by 4-1/2 inch, supplied with a concealed electric through-wire of 4 wires at 28 gauge, and belongs to the 1100 Series. The AB850 is a full mortise concealed anti-friction bearing hinge whose electric options are EMN electric monitor only, ETW electric through-wire only, ETM electric through-wire with monitoring, and Quick Connect. Count the conductors your electrified lock or monitoring circuit needs before choosing between them.
11) What is the difference between a concealed bearing hinge and a ball bearing hinge?
On a ball bearing hinge the bearing races sit exposed between the knuckles, so you can see them as a visible band. The AB850 puts the anti-friction bearing inside the knuckle, hidden, which gives a clean unbroken barrel and keeps the bearing out of dirt and paint. Functionally both reduce friction on a heavy leaf; the concealed version is chosen where the hinge is visible and the architect wants a smooth barrel. If exposed ball bearings are fine for your application, ZenSupply carries them from Don-Jo, including the BB74545 steel five knuckle and the BB94545 stainless five knuckle, both 4-1/2 by 4-1/2 inches.
12) Is the Hager AB850 available in brass or stainless steel, and which should I use?
Both. The AB850 is made in brass with a stainless steel pin, or stainless steel with a stainless steel pin. Stainless is the choice for exterior openings, pool and coastal environments, kitchens and anywhere washdown or corrosion is a factor. Brass is normally selected for interior work where the finish has to match brass or bronze trim. Note the certification follows the material: ANSI A2111 for brass, ANSI A5111 for stainless.
13) Can the door be taken off without unscrewing the Hager AB850 hinges from the frame?
Yes. The AB850 uses a non-rising removable pin with a flush pin and plug, so you drive the pin out and lift the leaf off with the hinge leaves still screwed to the door and frame. That matters for a property manager doing a repaint or moving appliances through an opening, and for any door you expect to pull more than once. Non-rising also means the pin will not creep up out of the barrel as the door cycles.
14) What finishes does the Hager AB850 hinge come in for matching existing door hardware?
Six orderable finishes: 605 bright brass, 612 satin bronze, 613 oil-rubbed satin bronze, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. For a building already standardized on satin chrome trim, 626 is the match; 630 satin stainless is what pairs with stainless push plates and exit hardware, and 613 is the dark bronze look. Matching across a fleet of doors is just a matter of ordering the same finish code you already have on the openings.
15) The AB850 has 3 knuckles but my existing hinges have 5. Does that matter?
Knuckle count is not itself a fit issue as long as the hinge size and screw hole pattern match what is cut into your door and frame. The AB850 is a 3 knuckle hinge, which is a heavy weight configuration with fewer, longer knuckles carrying the load. It will look different next to a 5 knuckle hinge on the same elevation, so if the opening is visible and the other doors carry 5 knuckle hinges, you may prefer to match. ZenSupply carries 5 knuckle full mortise options including the McKinney TCA3386 heavy weight, 4-1/2 by 4-1/2 inches.
16) Do I need to specify handing when ordering the Hager AB850?
No. The AB850 is a full mortise butt hinge with a symmetrical pair of leaves and a removable pin, so the same hinge works on a left or right hand door. What you do need to get right is the size, the finish, the material, and whether you want an electric modification. Handing only becomes a factor on hinges with a swing clear or pivot reinforced geometry, which this is not.
17) Is a heavy weight hinge like the AB850 overkill for a standard interior office door?
For a normal interior door that sees light traffic, yes, it is more hinge than the opening needs. Heavy weight is intended for heavy leaves and high cycle counts. For standard weight commercial interior work ZenSupply carries medium duty concealed bearing options including the BEST 1900R steel full mortise concealed bearing standard weight hinge with removable pin, and the Stanley Security CB1960R. Those give you the same clean concealed barrel without paying for heavy weight capacity you will not use.
18) I need to replace an existing commercial hinge and do not know what it is. Can I cross reference it to a Hager AB850?
Hager publishes a commercial hinge cross reference that maps competitor hinge model numbers to Hager equivalents, and ZenSupply carries it alongside the AB850. Work from the model stamped on the existing hinge leaf, then confirm the size and finish before ordering. If the existing hinge is heavy weight with a concealed bearing, the AB850 is the Hager number that class lands on.
19) Are ball bearing hinges like the Don-Jo BB74545 the same thing as the Hager AB850?
They are not the same bearing design. The Don-Jo BB74545 is a full mortise ball bearing hinge, 4-1/2 inch by 4-1/2 inch steel with square corners and a 5 knuckle configuration, rated standard duty, and the brass BB84545 and stainless BB94545 are the same 4-1/2 by 4-1/2 full mortise ball bearing pattern, also standard duty. The AB850 uses concealed anti-friction bearings in a 3 knuckle design and is rated heavy duty for heavy weight doors or high frequency service. The visible bearing races on a ball bearing hinge and the concealed bearings on the AB850 also read differently once the door is hung.
20) What is a heavy weight alternative to the Hager AB850 in a 5 knuckle square corner pattern?
The McKinney TCA3386 is a square corner 5 knuckle full mortise hinge, 4-1/2 inch by 4-1/2 inch, rated heavy duty, which puts it on the same class of opening as the AB850. The AB850 is a heavy duty full mortise concealed anti-friction bearing hinge with a 3 knuckle design and comes in sizes from 4.5 inch by 4 inch up to 6 inch by 5 inch. Where the existing frame prep and adjacent doors are set up for a 5 knuckle hinge, the TCA3386 keeps that appearance.
21) If only a 4-1/2 by 4 inch satin chrome hinge is needed, what is an option other than the Hager AB850?
The Don-Jo BB74540 is a full mortise ball bearing hinge at 4-1/2 inch by 4 inch in satin chrome, rated standard duty. The AB850 covers 4.5 inch by 4 inch among its sizes and offers 626 satin chrome among its finishes, and is rated heavy duty for heavy weight doors or high frequency service. The deciding factor is door weight and traffic, since the two are rated for different service levels.
22) What is the difference between the McKinney TCA2314 and TCA2317 as substitutes for the Hager AB850?
Both McKinney TCA2314 and TCA2317 are square corner 5 knuckle full mortise hinges at 4-1/2 inch by 4-1/2 inch and both are rated standard duty, so they cover a lighter door than the AB850, which is rated heavy duty for heavy weight or high frequency openings. Where a heavy duty McKinney is needed instead, the TCA3386 is the same square corner 5 knuckle 4-1/2 by 4-1/2 pattern rated heavy duty.
How fast can I get the Hager HAG-AB850 4-1/2x4-1/2 US26D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 HAG-AB850 4-1/2x4-1/2 US26D come with a warranty?
Absolutely. The Hager HAG-AB850 4-1/2x4-1/2 US26D 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 HAG-AB850 4-1/2x4-1/2 US26D?
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
Why buy the Hager HAG-AB850 4-1/2x4-1/2 US26D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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