Hager AB800 Full Mortise Conce...
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$95.58
$76.57
Hager Hager AB800 Full Mortise Concealed Anti-Friction Bearing Hinge, Standard Weight, 3 Knuckle HAG-AB800

Hager AB800 Full Mortise Concealed Anti-Friction Bearing Hinge with 3 Knuckle Standard Weight Design

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Model: HAG-AB800 4-1/2x4-1/2 US26D
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$76.57
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Hager AB800 Full Mortise Concealed Anti-Friction Bearing Hinge with 3 Knuckle Standard Weight Design

Professional Full Mortise Hinge Solution for Medium Weight Doors

The Hager AB800 Full Mortise Concealed Anti-Friction Bearing Hinge delivers reliable performance for medium weight doors requiring low frequency service. This 3 knuckle hinge features concealed anti-friction bearings with brass or stainless steel construction and stainless steel pins. Certified to ANSI A2111 (Brass) and ANSI A5111 (Stainless Steel) standards, the AB800 provides professional-grade reliability for commercial door applications.

Professional Features & Benefits

  • Concealed Anti-Friction Bearing Design: Smooth operation with reduced wear and extended service life for consistent door performance.
  • 3 Knuckle Configuration: Standard weight design optimized for medium duty applications and doors requiring low frequency service.
  • Dual Material Options: Available in brass with stainless steel pin or stainless steel with stainless steel pin for various architectural requirements.
  • Non-Rising Removable Pin: Features flush pin and plug design for easy maintenance and door removal when needed.
  • ANSI Certified Performance: Meets ANSI A2111 (Brass) and ANSI A5111 (Stainless Steel) standards for commercial-grade reliability.
  • Electric Modification Ready: Compatible with EMN (Electric Monitor Only), ETW (Electric Through-Wire Only), ETM (Electric Through-Wire with Monitoring), and Quick Connect options.
  • Extensive Finish Options: Available in US3, US4, US5, US9, US10, US15, US15A, US19, US26, US26D finishes plus SecureCoat Lifetime finish option (US3SC).
  • Full Mortise Installation: Both leaves mortise into door and frame for clean, professional appearance and maximum strength.
  • Non-rising removable pin with flush pin and plug.

Technical Specifications

  • ANSI/BHMA: ANSIA2111 (Brass), ANSIA5111 (Stainless Steel)
  • Applications: For use with medium weight doors or doors requiring low frequency service.
  • Certifications: ANSI A2111 (Brass), ANSI A5111 (Stainless Steel).
  • Commercial/Residential: Commercial
  • Duty Level: Medium Duty
  • Electric Modifications: EMN (Electric Monitor Only), ETW (Electric Through-Wire Only), ETM (Electric Through-Wire with Monitoring), Quick Connect
  • Features: Full Mortise, Standard 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.
  • Options: Available with SecureCoat Lifetime finish. (Specify US3SC when ordering).
  • 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 AB800 hinges deliver professional-grade reliability with concealed anti-friction bearing construction and ANSI certified performance standards. Available in brass or stainless steel materials with extensive finish options including SecureCoat Lifetime finish. Engineered for demanding commercial applications where dependable performance and smooth operation 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, Standard Weight, Concealed Anti-Friction Bearing
ANSI/BHMA:
ANSI A2111 (Brass), ANSI A5111 (Stainless Steel)
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Product Model:
AB800
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-AB800 4-1/2x4-1/2 US26D – Frequently Asked Questions

1) Will the Hager AB800 hinge work on a heavy exterior door or a high-traffic entrance?
No. The AB800 is a standard weight, medium duty hinge, built for medium weight doors and openings that see low frequency service. On a heavy door or a main entrance cycling all day you want a heavy weight concealed bearing hinge instead, like the Dormakaba Stanley Security CB199 full mortise concealed bearing heavy weight hinge or the McKinney TCA3386 heavy weight full mortise hinge. Putting a medium duty hinge on a high-cycle heavy door is the usual reason hinges sag and bind early.
2) What sizes does the Hager AB800 full mortise hinge come in?
Four sizes: 4-1/2 x 4 inches, 4-1/2 x 4-1/2 inches, 5 x 4 inches, 5 x 4-1/2 inches, and 5 x 5 inches. The first number is the hinge height up the door edge, the second the open width across both leaves, so the width choice is what has to clear your trim and let the door swing back where you need it. The common commercial pairing is 4-1/2 x 4-1/2 on a 1-3/4 inch door; you step up to a 5 inch height or a wider leaf when the door is thicker, heavier, or has to clear deep casing.
3) Can I get the Hager AB800 hinge with wires run through it for an electric lock or door monitoring?
Yes, the AB800 takes concealed electric modifications: EMN for monitoring only, ETW for through-wire only, ETM for through-wire with monitoring, and a Quick Connect option. That matters if you are powering an electric strike, an electrified lever, or a maglock from the frame, or feeding a door position switch back to an access control panel, because the wire runs inside the hinge barrel instead of through an exposed loop. The modification has to be specified when you order, so name EMN, ETW, ETM or Quick Connect on the line.
4) Does the Hager AB800 meet the ANSI grade my spec calls out for commercial hinges?
The AB800 is certified to ANSI A2111 in brass and ANSI A5111 in stainless steel, and it is a commercial-rated hinge. Which certification applies depends on the material you order, so if the submittal calls out one of those two numbers specifically, pick the matching substrate: brass with a stainless steel pin for A2111, stainless steel with a stainless steel pin for A5111.
5) Do I need a wheelchair-accessible swing clear hinge, or will a standard full mortise hinge like the AB800 do?
The AB800 is a conventional full mortise hinge: the door stops against the open leaf, so the door itself still eats into the clear opening when it is swung back. If you are trying to recover those inches on a hospital corridor, a restroom, or any opening where a gurney or a wheelchair has to get through, a swing clear hinge is the right type, and the BEST CB248 is a steel full mortise concealed bearing swing clear hinge for square edge doors at the same medium duty level. For everything else, standard full mortise is the normal choice.
6) I am replacing another brand's hinge and need to know if the Hager AB800 drops into the same prep.
Hager publishes a commercial hinge cross reference that maps competitor hinge numbers to its own, and it is at https://zensupply.com/content/pdf/hager/2021_Cross_Ref_Commercial Hinges_FINAL.pdf. Look your existing number up there to confirm the AB800 is the right substitute before you order. On the mechanical side, what has to match is the hinge size, so measure the existing leaf: the AB800 comes in 4-1/2 x 4, 4-1/2 x 4-1/2, 5 x 4, 5 x 4-1/2, and 5 x 5 inches, and the size you order has to be the size already mortised into the door and frame.
7) What is the closest concealed bearing standard weight full mortise hinge to the Hager AB800 from another manufacturer?
The BEST 1900R is the nearest match in concept: a steel full mortise concealed bearing standard weight hinge with a removable pin, rated medium duty, the same duty level the AB800 carries. The Stanley Security CB1960R is the other close peer, also a full mortise concealed bearing standard weight hinge at medium duty. The difference to settle before you order is material - the AB800 is supplied in brass with a stainless steel pin or stainless steel with a stainless steel pin, while the 1900R is steel.
8) The AB800 is medium duty - what concealed bearing hinge should I use on a high traffic or heavy door instead?
Step up to a heavy weight concealed bearing hinge. The Stanley Security CB199 is a full mortise concealed bearing heavy weight hinge, and the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge prepped for beveled edge doors. Both are rated heavy duty, where the Hager AB800 is medium duty and described for medium weight doors or doors requiring low frequency service. On a stairwell, entry, or classroom door that cycles all day, the heavy weight body is the right selection.
9) Is a 5 knuckle ball bearing hinge like the Don-Jo BB74545 the same thing as the Hager AB800?
No. The AB800 is a 3 knuckle hinge with concealed anti-friction bearings, meaning the bearing is hidden inside the barrel. The Don-Jo BB74545 is a 4-1/2 inch by 4-1/2 inch steel square corner 5 knuckle full mortise ball bearing hinge, and the McKinney TCA2314 is likewise a square corner 5 knuckle full mortise hinge in 4-1/2 by 4-1/2. A 5 knuckle barrel has a different joint pattern and a visible bearing race between knuckles, so it will not read the same on the door alongside existing AB800 hinges even where the leaf size matches.
10) I need the door to clear the opening for a wheelchair or gurney - can the AB800 do that?
No, the AB800 is a standard full mortise hinge, so the leaf stays in the opening when the door swings. For clear opening width you want a swing clear hinge: the BEST CB248 is a steel full mortise concealed bearing swing clear hinge for square edge doors, rated medium duty, the same duty level as the AB800, and it uses the same concealed bearing construction. Healthcare corridors and ADA-driven clear width requirements are the usual reason to specify it over a standard leaf.
11) Brass or stainless steel for the AB800, which should I order?
Both come with a stainless steel pin, so the difference is the leaf material and the certification it carries. Stainless steel leaves are the pick for exterior doors, pool and locker areas, kitchens, and anywhere washdown or salt air will get at the hinge, and that version is certified to ANSI A5111. Brass leaves, certified to ANSI A2111, are the usual choice for interior openings and for matching brass or bronze trim on the rest of the door. If you want a plated brass finish that holds up outside, there is a SecureCoat Lifetime option, ordered as US3SC.
12) Can the door be taken off without unscrewing the AB800 hinges from the frame?
Yes. The AB800 uses a non-rising removable pin with a flush pin and plug, so you pull the pin and lift the door off the leaves, leaving both leaves mortised in place. That is what you want on a rental turn or a repaint, where the door comes off and goes back on the same prep. Non-rising also means the door does not climb as it swings, so floor clearance and carpet stay as set.
13) What is the difference between a concealed bearing hinge like the AB800 and a standard ball bearing hinge?
A concealed anti-friction bearing hinge carries the bearings inside the knuckles, so the barrel reads as a plain 3 knuckle hinge with no bearing rings showing between the knuckles. A ball bearing hinge shows those bearings in the barrel, usually in a 5 knuckle stack, the way the Don-Jo BB74545 and the McKinney TCA2314 are built. Mechanically both reduce friction; the choice is appearance and knuckle count. Where an architect has specified a clean barrel, or where existing openings in the building already have concealed bearing hinges and you want the barrels to match, go concealed.
14) What finishes does the Hager AB800 hinge come in, and can I match satin chrome lever sets?
Six finishes are orderable across every size: 605 bright brass, 612 satin bronze, 613 satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. For satin chrome trim, 626 is the match. If the rest of the door is stainless, 630 is the one to use. There is also a SecureCoat Lifetime finish option, specified as US3SC when ordering.
15) Is the AB800 a full mortise hinge or a half mortise, and what does that mean for my frame prep?
Full mortise, meaning both leaves get routed in, one into the door edge and one into the frame rabbet, so the hinge sits flush on both sides. That requires a frame already prepped for hinges or a frame you can rout. If the frame cannot be mortised, a full mortise hinge is the wrong type for that opening. Full mortise is also the strongest of the mounting styles because the load goes into the mortise rather than into surface screws alone.
16) Does a pivot reinforced hinge like the BEST FBB212 replace the AB800?
They solve different problems. The BEST FBB212 is a steel ball bearing pivot reinforced heavy weight hinge for square edge doors at standard duty, and the BEST CB223 is the concealed bearing pivot reinforced version at heavy duty. Pivot reinforced hinges add material at the top of the door to take the load a pivot would otherwise carry. The Hager AB800 is a standard weight 3 knuckle concealed anti-friction bearing hinge at medium duty with no pivot reinforcement, so on an opening specified with a pivot reinforced top hinge the AB800 is used for the intermediate and bottom positions, not as the reinforced one.
17) I need a stainless steel full mortise hinge in 4-1/2 x 4-1/2 - what are my options besides the Hager AB800?
The AB800 is offered in stainless steel with a stainless steel pin and covers a 4.5 inch by 4.5 inch size in finishes including 630 satin stainless steel. The Don-Jo BB94545 is a 4-1/2 inch by 4-1/2 inch stainless steel square corner full mortise ball bearing hinge at standard duty, and the BEST CB223 is a stainless steel concealed bearing hinge at heavy duty for beveled edge doors. Match the bearing style and duty level to the opening: the AB800 and CB223 are concealed bearing, the BB94545 is ball bearing.
18) The AB800 lists electric through-wire options - is there a peer hinge that comes prepped with the wiring already in it?
Yes. 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 in a 4 wire 28 gauge configuration, from the 1100 Series. The Hager AB800 handles electrified openings through its own modifications - EMN monitor only, ETW through-wire only, ETM through-wire with monitoring, and Quick Connect - so the choice is between a 3 knuckle concealed anti-friction bearing body with a specified modification and a 5 knuckle ball bearing body that ships with a fixed 4 wire harness.
19) What is the difference between the McKinney TCA3386 and the Hager AB800 for a heavy door?
The McKinney TCA3386 is a square corner 5 knuckle full mortise hinge, 4-1/2 inch by 4-1/2 inch, in heavy weight and rated heavy duty. The Hager AB800 is a 3 knuckle standard weight hinge at medium duty, built for medium weight doors. McKinney also lists the TCA2314 and TCA2317 in the same 4-1/2 by 4-1/2 square corner 5 knuckle format at standard duty. If the door leaf is the reason you are looking, the heavy weight TCA3386 is the one in that group sized to it.
20) I have beveled edge doors - will the AB800 work or do I need a different hinge?
The Hager AB800 is a full mortise hinge and its record does not call out an edge profile. Where the opening is specifically beveled edge, the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge built for beveled edge doors, while the BEST FBB212 and BEST CB248 are prepped for square edge doors. Confirm the door edge before ordering, because the leaf geometry differs between the two preps.
21) For a low traffic office door in satin chrome, is there a simpler alternative to the AB800?
The Don-Jo BB74540 is a full mortise ball bearing hinge, 4-1/2 inch by 4 inch, in satin chrome at standard duty, and the Don-Jo BB84545 is a brass full mortise ball bearing hinge, 4-1/2 inch by 4-1/2 inch, also in satin chrome at standard duty. The Hager AB800 covers the same 4.5 by 4 and 4.5 by 4.5 leaf sizes in 626 satin chrome, but with a 3 knuckle concealed anti-friction bearing body at medium duty and ANSI A2111 brass or A5111 stainless certification. For an interior office door the ball bearing Don-Jo is a straightforward swap on leaf size; where the specification calls out the ANSI certification, stay with the AB800.
22) I count five sizes on the AB800, not four.
Five sizes: 4-1/2 x 4, 4-1/2 x 4-1/2, 5 x 4, 5 x 4-1/2, and 5 x 5 inches.
23) How many AB800 hinges do I need per door, and where do they go?
Hinge count and spacing come off Hager's own standard hinge location sheet rather than off the hinge itself, and it is published at https://zensupply.com/content/pdf/hager/standard_hinge_locations.pdf. There is also a full mortise size option sheet for picking the right height and leaf width for your door at https://zensupply.com/content/pdf/hager/Hinge_Comm_FullMortise_Size_Opt_8.pdf. Pull both before you cut frame prep, because getting the top hinge location wrong means a new frame, not a new hinge.
24) Where do I find wiring and installation instructions for an electrified AB800 hinge?
Two documents cover it. The concealed electric hinge modification sheet explains what EMN, ETW, ETM and Quick Connect actually give you, at https://zensupply.com/content/pdf/hager/gen_info_concealed_electric_hinge_modification.pdf. The electric hinge installation instructions are at https://zensupply.com/content/pdf/hager/17370050-Rev02.pdf. Read the modification sheet before ordering, because the electric option is built into the hinge and cannot be added later in the field.
25) Can I get a pre-wired through-wire hinge in 4-1/2 x 4-1/2 from another brand if I need one off the shelf?
The ACSI 5BB1 is a 5 knuckle ball bearing full mortise hinge in 4-1/2 x 4-1/2 inches with a concealed electric through-wire already built in, 4 wire at 28 gauge. It is a 5 knuckle ball bearing barrel rather than the AB800's 3 knuckle concealed bearing, so the barrel appearance differs if you are matching adjacent openings, but the door and frame prep is the same 4-1/2 x 4-1/2 mortise.
26) I am standardizing hinges across a portfolio - which concealed bearing hinges can I spec alongside the Hager AB800?
Three peers share the concealed bearing construction. The BEST 1900R and the Stanley Security CB1960R are both full mortise concealed bearing standard weight hinges at medium duty, matching the AB800 duty level, and the BEST CB248 is the concealed bearing swing clear version at medium duty for square edge doors. Where a door needs more, the Stanley Security CB199 is the heavy weight concealed bearing hinge. That gives a consistent bearing style across standard openings, ADA clear-width openings, and heavy openings in one program.
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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 HAG-AB800 4-1/2x4-1/2 US26D come with a warranty?
Absolutely. The Hager HAG-AB800 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-AB800 4-1/2x4-1/2 US26D?
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