Hager AB920 Full Mortise Conce...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.43
$38.80
Hager Hager AB920 Full Mortise Concealed Anti-Friction Bearing Hinge, Standard Weight, Steel, 2 Knuckle HAG-AB920

Hager AB920 Full Mortise Concealed Anti-Friction Bearing Hinge with 2 Knuckle Steel Construction

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Model: HAG-AB920 4-1/2x4-1/2 RH US26D
$48.43
$38.80
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$48.43
$38.80
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Hager AB920 Full Mortise Concealed Anti-Friction Bearing Hinge with 2 Knuckle Steel Construction

Professional Medium-Duty Door Hinge Solution

The Hager AB920 Full Mortise Concealed Anti-Friction Bearing Hinge delivers reliable performance for medium weight doors requiring medium frequency service. This standard weight hinge features 2 knuckle steel construction with steel pin and concealed anti-friction bearing design. ANSI A8133 certified for commercial applications with multiple finish options including USP, US10, US10A, US10B, and US26D.

Professional Features & Benefits

  • Anti-Friction Bearing Design: Concealed bearing system reduces wear and ensures smooth operation for extended service life in medium-duty applications.
  • Full Mortise Installation: Both leaves mortise into door and frame for clean, professional appearance and maximum strength connection.
  • Steel Construction: Steel material with steel pin provides durability and reliability for commercial door installations.
  • 2 Knuckle Configuration: Optimized knuckle design balances strength and functionality for standard weight door applications.
  • ANSI Compliance: ANSI A8133 certification ensures performance standards for commercial door hardware applications.
  • Multiple Finish Options: Available in USP, US10, US10A, US10B, and US26D finishes to match architectural requirements.
  • Handed Configuration: Specify handing when ordering for proper door swing operation and installation.
  • Fastener Compatibility: Accommodates 12-24 x 1/2" machine screws or 12 x 1-1/4" wood screws for versatile mounting options.

Technical Specifications

  • ANSI/BHMA: ANSIA8133
  • Applications: For use with medium weight doors or doors requiring medium frequency service.
  • Certifications: ANSI A8133
  • Commercial/Residential: Commercial
  • Duty Level: Medium Duty
  • Fastener Size - Machine: 12-24 x 1/2"
  • Fastener Size - Wood: 12 x 1-1/4"
  • Features: Full Mortise, Concealed, Anti-Friction Bearing, Standard Weight
  • Finishes: USP, US10, US10A, US10B, US26D
  • Knuckles: Material : Steel With Steel Pin.
  • Material: Steel With Steel Pin.
  • Notes: With door closer, use anti-friction or ball bearing hinge.
  • 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 AB920 hinges deliver professional-grade reliability with steel construction and concealed anti-friction bearing system rated for medium-duty commercial applications. ANSI A8133 certification ensures compliance with industry performance standards. Engineered for demanding commercial applications where dependable performance and smooth operation are essential.

Product Specs

Subcategory:
Full Mortise Hinges
Knuckles:
2
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Full Mortise Hinges
Features:
Full Mortise, Concealed, Anti-Friction Bearing, Standard Weight
ANSI/BHMA:
ANSI A8133
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Product Model:
AB920
Product Function:
Concealed Bearing
Product Category:
Door Hinges and Pivots
Product Substrate:
Steel
Department:
Door Hardware

Hager HAG-AB920 4-1/2x4-1/2 RH US26D – Frequently Asked Questions

1) Do I have to specify handing when ordering the Hager AB920 hinge?
Yes, handing is an order decision on the AB920. It ships as either LH (left hand) or RH (right hand), and both are offered in every finish and in both 4-1/2 x 4 inch and 4-1/2 x 4-1/2 inch sizes. Stand outside the door, on the side it swings away from: hinges on your left is left hand. Getting it backwards on a concealed anti-friction bearing hinge means the bearing runs the wrong way for the swing, so confirm the swing before you order rather than after the frame is prepped.
2) What size hinges does the Hager AB920 come in, and which one do I need for a 1-3/4 inch commercial door?
Two sizes: 4-1/2 x 4 inches and 4-1/2 x 4-1/2 inches. The first number is the hinge height, the second the open width across both leaves. On a standard 1-3/4 inch commercial door with no trim to clear, 4-1/2 x 4-1/2 is the usual pick because it matches the existing mortise on most hollow metal frames. The 4-1/2 x 4 narrower leaf is for thinner doors or where the door has to clear less. Either way the 4-1/2 inch height means it drops into a standard 4-1/2 inch hinge cutout.
3) My door has a closer on it. Is a concealed anti-friction bearing hinge like the Hager AB920 the right choice?
It is exactly the right choice. Hager's own note on the AB920 is that with a door closer you should use an anti-friction or ball bearing hinge, and the AB920 is the anti-friction bearing version. A plain plain-bearing hinge under closer load wears at the knuckle and starts to sag and bind. The AB920's bearing is concealed inside the knuckle, so you get the bearing without the stacked bearing rings showing on the barrel.
4) What should I use instead of an AB920 on a heavy door or a high-traffic opening?
The AB920 is a medium duty standard weight hinge intended for medium weight doors and medium frequency service, so a heavier opening calls for a heavy weight hinge. The Stanley Security CB199 is a full mortise concealed bearing heavy weight hinge, rated heavy duty, and keeps the same concealed bearing construction as the AB920. In steel with a square edge door, the McKinney TCA3386 is a square corner 5 knuckle full mortise hinge in 4-1/2 by 4-1/2 rated heavy duty. For a beveled edge door needing pivot reinforcement, the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge, also heavy duty.
5) What is the closest equivalent to a Hager AB920 hinge from another manufacturer?
The AB920 is a full mortise concealed anti-friction bearing hinge in steel, rated medium duty for commercial use. The closest peers in the same construction are the BEST 1900R, a steel full mortise concealed bearing standard weight hinge also rated medium duty, and the Stanley Security CB1960R, a full mortise concealed bearing standard weight hinge from the Architectural Hinges series, likewise medium duty. Both share the concealed bearing and full mortise format, so either drops into the same 4-1/2 inch mortise prep the AB920 uses. The 1900R is built with a removable pin, which is the notable construction difference between it and the AB920's steel pin.
6) I need power transfer to an electrified lock in the door. Can I use the AB920?
No, the AB920 is a mechanical concealed anti-friction bearing hinge with a steel pin and carries no wiring path. For power transfer through the hinge, the ACSI 5BB1 is an Ives 5 knuckle ball bearing full mortise hinge in 4-1/2 by 4-1/2 with concealed electric through-wire, 4 wire at 28 gauge, in the 1100 Series. A common approach is to hang the electric through-wire hinge in one position on the door and use mechanical hinges such as the AB920 in the remaining positions, since both are full mortise and take the same 4-1/2 inch mortise prep.
7) Which hinge do I use if the door needs to swing fully clear of the opening for wheelchair access?
A standard full mortise hinge like the AB920 holds the door within the frame reveal when open, so it does not widen the clear opening. For that, the BEST CB248 is a steel full mortise concealed bearing swing clear hinge for square edge doors, from the Swing Clear Hinges series and rated medium duty, which matches the AB920's medium duty rating. The swing clear geometry rotates the door out of the opening so the full frame width is usable, which is what healthcare corridors and accessible restrooms are typically specified around.
8) What screws do I need for the Hager AB920, and do they come with it?
The AB920 takes 12-24 x 1/2 inch machine screws into a metal frame or metal door, or 12 x 1-1/4 inch wood screws into a wood door or wood jamb. That is the fastener size the hinge is drilled and tapped for, so if you are ordering fasteners separately for a hollow metal frame you want the 12-24 x 1/2 inch machine screw.
9) What finishes does the Hager AB920 hinge come in to match the rest of my hardware?
Five: 600 primed for painting, 612 satin bronze, 613 satin bronze oil-rubbed, 626 satin chrome, and US10A antique bronze. All five are available in both handings. If you are standardizing a building, 626 satin chrome is the one that matches most commercial lever and closer hardware, and 600 primed lets you paint the hinge to the frame color on a painted hollow metal opening.
10) Is the Hager AB920 ANSI certified for a commercial job spec?
The AB920 carries ANSI A8133 and is a commercial-rated hinge, which is the reference a spec writer or institutional buyer will want on the submittal. If the drawing calls out A8133, the AB920 answers it directly.
11) What is the difference between a concealed bearing hinge and a 5 knuckle ball bearing hinge?
It is a barrel appearance and construction difference. The AB920 is a 2 knuckle hinge with the anti-friction bearing hidden inside, so the barrel reads as a clean two-piece cylinder with no visible bearing rings. A 5 knuckle ball bearing hinge such as the Don-Jo BB74545 or the McKinney TCA2314, both 4-1/2 x 4-1/2 inch full mortise hinges, puts the bearings between the knuckles where you can see them. Both carry the door; pick the concealed style when the opening is on show or the architect specified a clean barrel.
12) What is the difference between a pivot reinforced hinge and the AB920 full mortise hinge?
The AB920 is a full mortise hinge: both leaves mortise into the door and the frame, and the load is carried by the hinge leaves and the concealed anti-friction bearing. A pivot reinforced hinge adds a pivot element to carry the door weight. The BEST FBB212 is a steel ball bearing heavy weight pivot reinforced hinge for square edge doors, rated standard duty, and the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge for beveled edge doors, rated heavy duty. Door edge profile decides between those two, and neither is a drop-in for the AB920 prep because the pivot reinforcement changes the frame requirement.
13) Is a ball bearing hinge the same thing as the AB920 concealed anti-friction bearing hinge?
They are different bearing constructions that serve the same purpose. The AB920 carries a concealed anti-friction bearing with 2 knuckles, so the bearing is not visible in the barrel. A ball bearing hinge such as the Don-Jo BB74545, a steel full mortise ball bearing hinge in 4-1/2 by 4-1/2 with square corners and 5 knuckles, shows the bearings between the knuckles. For a door with a closer on it, either type is appropriate: the AB920 record specifies that an anti-friction or ball bearing hinge be used with a closer. What does change is the knuckle count and therefore the look of the barrel, which matters when matching hinges already hung on adjacent doors.
14) What is a simpler hinge than the AB920 for a light interior door in a rental unit?
The AB920 is an ANSI A8133 certified commercial hinge rated medium duty. Where the opening is lighter, the Don-Jo BB74540 is a full mortise ball bearing hinge in 4-1/2 by 4 inches in satin chrome, rated standard duty, and matches the 4-1/2 by 4 size the AB920 is also offered in. The Don-Jo BB74545 is the same standard duty construction in 4-1/2 by 4-1/2, steel with square corners and 5 knuckles. Both are full mortise, so a unit already prepped for the AB920 takes them without reworking the door or frame.
15) Can I mix McKinney TCA hinges with Hager AB920 hinges on the same set of doors?
Mechanically they share the format. The McKinney TCA2314 and TCA2317 are both square corner 5 knuckle full mortise hinges in 4-1/2 by 4-1/2, rated standard duty, and the AB920 is offered in 4-1/2 by 4-1/2 as well, so the mortise prep lines up. Two things separate them on a door being matched: the AB920 has 2 knuckles against the TCA's 5, which changes the barrel appearance, and the AB920 is rated medium duty against the TCA's standard duty. For a facility standardizing across openings, the knuckle count is usually the deciding detail because it is visible from the corridor.
16) Does the AB920 come with a removable pin like the BEST 1900R?
No. The AB920 is built in steel with a steel pin and does not offer a removable pin option. The BEST 1900R is the peer that does: a steel full mortise concealed bearing standard weight hinge with removable pin, rated medium duty, which is the same duty rating as the AB920. If the specification calls for a removable pin so the door can be taken off without unscrewing leaves, the 1900R is the concealed bearing hinge that meets it; otherwise the two are equivalent full mortise concealed bearing steel hinges.
17) Can I use the Hager AB920 on a beveled edge door?
The AB920 is a straight full mortise hinge with no bevel-specific prep called out. If your door has a beveled edge and the spec calls for a hinge built for it, the BEST CB223 is a concealed bearing heavy weight pivot reinforced hinge made specifically for beveled edge doors. For square edge doors in a heavier duty class, the BEST FBB212 is the ball bearing pivot reinforced option.
How fast can I get the Hager HAG-AB920 4-1/2x4-1/2 RH 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-AB920 4-1/2x4-1/2 RH US26D come with a warranty?
Absolutely. The Hager HAG-AB920 4-1/2x4-1/2 RH 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-AB920 4-1/2x4-1/2 RH 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
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