Hager 1129 Half Mortise Plain ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$35.75
$25.56
Hager 1129 Half Mortise Plain Bearing Standard Weight Steel Commercial Hinge 4-1/2"

Hager 1129 Half Mortise Plain Bearing Commercial Hinge 4-1/2" Standard Weight Steel

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Model: 1129-4.5-USP

In Stock (leaves warehouse same day if ordered before 3pm ET)

$35.75
$25.56
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Hager 1129 Half Mortise Plain Bearing Commercial Hinge 4-1/2" Standard Weight Steel

Professional Half Mortise Hinge Solution for Commercial Applications

The Hager 1129 half mortise plain bearing commercial hinge delivers reliable performance for medium weight hollow metal doors with channel iron frames. This 4-1/2" standard weight steel hinge features 5-knuckle construction with steel pin and is certified to ANSI A8233 standards. Designed for low frequency service applications, the hinge includes a non-rising removable pin with button tip and plug for easy maintenance and reversible installation.

Professional Features & Benefits

  • Half Mortise Design: One leaf mortised in door, other surface applied to frame for hollow metal doors with channel iron frames.
  • 5-Knuckle Construction: Standard weight steel construction with steel pin provides reliable operation for medium weight doors.
  • 4-1/2" Size: Standard commercial hinge size suitable for most hollow metal door applications requiring low frequency service.
  • Non-Rising Removable Pin: Button tip and plug design allows easy removal for maintenance without affecting door alignment.
  • Reversible Installation: Beveled surface leaf design accommodates both left and right hand door configurations.
  • ANSI A8233 Certified: Meets industry standards for commercial hinge performance and reliability.
  • Multiple Finish Options: Available in USP, US10, US10A, US10B, and US26D finishes to match various architectural requirements.
  • Non-rising removable pin with button tip and plug.

Technical Specifications

  • ANSI/BHMA: ANSI A8233
  • Applications: For use on medium weight hollow metal doors with channel iron frames requiring low frequency service.
  • Certifications: ANSI A8233
  • Commercial/Residential: Commercial
  • Duty Level: Heavy Duty
  • Fastener Size
  • Features: Non-rising removable pin with button tip and plug.
  • Finishes: USP, US10, US10A, US10B, US26D
  • Knuckles: 5
  • Subcategory: Full Mortise Detention 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 commercial hinges deliver professional-grade reliability with standard weight steel construction and 5-knuckle design rated for heavy duty commercial applications. ANSI A8233 certification ensures compliance with industry performance standards. Engineered for demanding commercial applications where dependable performance and easy maintenance are essential.

Product Specs

Subcategory:
Full Mortise Detention Hinges
Knuckles:
5
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Hinges
Features:
Non-rising removable pin with button tip and plug.
ANSI/BHMA:
ANSI A8233
Duty Level:
Heavy Duty
Commercial/Residential:
Commercial
Product Model:
1129
Product Function:
Plain Bearing
Product Finish:
Prime Coat
Product Size:
4.5"
Product Substrate:
Steel
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

Hager 1129-4.5-USP – Frequently Asked Questions

1) Will the Hager 1129 hinge work on a high traffic door like a school entrance or a busy office corridor?
No. The 1129 is a plain bearing hinge specified for low frequency service. Plain bearing means no ball or concealed bearing races between the knuckles, so it wears faster under constant cycling. For a door that swings all day, move to a bearing hinge: the Ives 3CB1HW heavy weight concealed bearing, the Don-Jo HWBB84545 heavy weight full mortise ball bearing in 4-1/2 x 4-1/2, or the Orca 3535 Series 4-1/2 x 4-1/2 square corner ball bearing. Use the 1129 on doors that open a handful of times a day, mechanical rooms, storage, back of house.
2) Do I need to order a left hand and right hand version of the Hager 1129 half mortise hinge?
No handing to specify. The 1129 has a beveled surface leaf that takes both left and right hand door configurations, so one part number covers either swing. That matters more on a half mortise than a full mortise, because the surface applied leaf sits against the frame face and a non-reversible bevel would force you to stock both hands.
3) What is the closest equivalent to a Hager 1129 hinge if the door needs a full mortise hinge instead of a half mortise?
The Hager 1129 is a half mortise hinge: one leaf mortises into the door and the other leaf is surface applied to the frame, which is what suits it to hollow metal doors hung in channel iron frames. If the frame is prepped for a mortised leaf on both sides, that application needs a full mortise hinge instead. The Stanley Security FBB191 in 4-1/2 inch by 4-1/2 inch is a full mortise standard weight 5-knuckle hinge, matching the 1129 on 5-knuckle construction and 4-1/2 inch size. The McKinney MP79 MacPro is also a 5-knuckle standard weight full mortise hinge. Confirm which prep the frame actually has before ordering, because the two leaf preps are not interchangeable in the same opening.
4) The opening needs to run power to an electric lock. Is there an alternative to the Hager 1129 that transfers power through the hinge?
The Hager 1129 is a mechanical hinge with a non-rising removable pin and no conductor. Power transfer through the hinge requires an electrified hinge. The BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect, medium duty. The Command Access ETH-BB68 is a heavy duty energy transfer hinge with a 5-knuckle steel base, matching the 1129 on knuckle count. If the opening also needs door position monitoring, the Command Access ETM-BB68 is an energy transfer monitor hinge with an integrated door position switch. All three are full mortise or full mortise style, so the frame prep differs from the 1129 surface applied leaf.
5) When should I use a ball bearing or concealed bearing hinge instead of a Hager 1129 plain bearing hinge?
The Hager 1129 is a plain bearing hinge intended for medium weight hollow metal doors in low frequency service. Openings that cycle constantly, or that carry a closer, generally get a bearing hinge. The Don-Jo HWBB74545 is a heavy duty heavy weight full mortise ball bearing hinge in 4-1/2 inch by 4-1/2 inch, the same nominal size as the 1129. The Ives 3CB1HW is a heavy duty steel heavy weight concealed bearing full mortise hinge with 3 knuckles. Both are full mortise, so they require a frame prepped for a mortised leaf rather than the surface applied leaf the 1129 uses.
6) For a detention or security opening, what should I look at instead of the Hager 1129?
The Hager 1129 uses a non-rising removable pin, which means the pin can be pulled for maintenance. Security openings usually call for a hinge that cannot be defeated at the pin. The Deltana CSB45N is a 4-1/2 inch by 4-1/2 inch square hinge pair with a non-removable pin, the same nominal leaf size as the 1129. For detention work specifically, the BEST BB855 is a heavy-duty steel double weight concealed ball bearing prison hinge in the Detention Hardware series, and the Stanley Security BB855 is a double weight prison hinge furnished with no holes and not swaged, 5 inch by 6 inch. The Deltana DE44R5TA is a 4 inch by 4 inch security steel hinge pair with a 5/8 inch radius.
7) Can the pin be pulled on the Hager 1129 to take the door down without disturbing the frame?
Yes. The 1129 uses a non-rising removable pin with a button tip and plug. Drive the pin out, lift the door off, and the surface applied frame leaf stays screwed in place, so alignment is preserved when you rehang. Non-rising also means the pin will not creep up out of the barrel as the door cycles. Note that a removable pin on an out-swinging exterior opening is a security exposure; for that condition you want a non-removable pin hinge such as the Deltana CSB45N 4-1/2 x 4-1/2 NRP.
8) What size and material is the Hager 1129 commercial hinge, and how many knuckles does it have?
4-1/2 inch, steel, 5-knuckle, standard weight. The 5-knuckle barrel spreads the door load over more bearing surface than a 3-knuckle, and 4-1/2 inch is the standard commercial hinge size for a 1-3/4 inch hollow metal door. Steel base means it is a painted or plated interior hinge, not a corrosion rated non-ferrous one; for an opening that sees weather or wash-down chemicals you would look at a non-ferrous hinge like the McKinney T2314.
9) Does the Hager 1129 hinge meet ANSI/BHMA standards for a commercial specification?
The 1129 is certified to ANSI A8233 and is a commercial rated hinge, not a residential one. If your spec or submittal calls out an ANSI hinge designation, A8233 is the number to put on the sheet. That is the only standard carried on the 1129, so if the opening also needs a fire door listing, confirm the listing separately before you submit it.
10) What finish does the Hager 1129 4-1/2 inch half mortise hinge come in?
Prime coat, ordered as 1129-4.5-USP. USP is a prime coat gray meant to be field painted, so it is the right pick when the door and frame are getting painted to match and you do not want a plated finish showing at the barrel. If the hinge will be visible against finished hardware, prime coat is the wrong choice, and you would want a plated hinge instead, such as the Don-Jo HWBB74545 in satin chrome.
11) Is the Hager 1129 a detention hinge for a jail or holding cell door?
No. Despite the heavy duty rating, the 1129 is a standard weight plain bearing hinge for medium weight hollow metal doors in low frequency service. Detention openings need a purpose built security hinge, such as the BEST BB855 double weight concealed ball bearing prison hinge or the Stanley double weight prison hinge in 5 by 6, furnished with no holes and not swaged. Do not substitute the 1129 into a detention spec.
12) I am replacing hinges across a building and want to match what is already on the doors. How do I confirm the Hager 1129 is the right cross reference?
Hager publishes a commercial hinge cross reference that maps competitor hinge numbers to the equivalent Hager model, which is the fastest way to confirm the 1129 against whatever is currently hanging in the opening. Check the existing hinge first for the two things that decide it: whether the frame leaf is surface applied (half mortise) or mortised into the jamb, and whether the size is 4-1/2 inch. Match both and the 1129 drops in on the same prep.
13) Will a bulk pack of residential hinges work for a commercial hollow metal door instead of the Hager 1129?
No. The Hager 1129 is a commercial half mortise hinge in 4-1/2 inch steel for hollow metal doors with channel iron frames. Bulk residential hinges are sized and prepped for wood doors: the Delaney RH35xx is a 3-1/2 inch by 3-1/2 inch bulk steel residential interior hinge pair with a 5/8 inch radius, and the Delaney RH45xx is a 4 inch by 4 inch bulk residential exterior hinge pair, also 5/8 inch radius. The Deltana DSB35 is a 3-1/2 inch by 3-1/2 inch square residential hinge pair. All are smaller than the 1129 and none address a surface applied frame leaf.
14) Can a residential plain bearing hinge be used in place of a Hager 1129?
They share the plain bearing action but not the application. The Hager 1129 is a commercial hinge in 4-1/2 inch size, steel, rated heavy duty. The Emtek 91013 is a residential duty plain bearing hinge sold in pairs at 3-1/2 inch by 3-1/2 inch in plated steel, and the Ives 1010RP is a steel plain bearing residential hinge with square corners, medium duty, sold in sets of three. Both are smaller leaf sizes and residential in intent, so neither drops into a hollow metal opening prepped for a 4-1/2 inch commercial hinge.
15) What is the closest 4-1/2 inch commercial ball bearing hinge if I want a bearing hinge in a square corner?
The Hager 1129 is a 4-1/2 inch plain bearing steel commercial hinge. For a bearing hinge at the same nominal size with a square corner, the Orca Hardware 3535 Series is a 4-1/2 inch by 4-1/2 inch square corner ball bearing commercial hinge, medium duty. The Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with a square corner, which is the smaller leaf size. Corner style has to match the existing mortise on a retrofit.
16) Is a pivot a substitute for a Hager 1129 hinge?
No. The Hager 1129 is a hinge that carries the door on leaves fastened at the edge of the door and the frame. A pivot carries the door at the top and bottom instead and requires entirely different prep in the floor or header. The BEST DAP-3 is a heavy duty double acting pivot for commercial interior doors, which lets a door swing both directions, something a 1129 cannot do. If the opening is currently hung on hinges, swapping to a pivot is a prep change, not a parts swap.
17) The door needs to self-close. Does the Hager 1129 do that, and if not what does?
The Hager 1129 is a plain bearing hinge with a non-rising removable pin and no closing mechanism, so the door will stay wherever it is left unless a separate closer is fitted. A spring hinge closes the door through the hinge itself. The Stanley Security 2060R in 4-1/2 inch by 4-1/2 inch is a heavy duty full mortise spring hinge with square corners on a ferrous steel base, the same nominal leaf size as the 1129. It is full mortise, so it needs both leaves mortised rather than the surface applied frame leaf the 1129 uses.
18) What is the difference between the Hager 1129 and a McKinney MacPro 5-knuckle standard weight hinge?
Both are 5-knuckle standard weight commercial hinges. The Hager 1129 is a half mortise plain bearing steel hinge in 4-1/2 inch, built for medium weight hollow metal doors hung in channel iron frames, with a non-rising removable pin with button tip and plug. The McKinney MP79 MacPro is a full mortise 5-knuckle standard weight hinge, and the MPB79 MacPro is a 5-knuckle standard weight hinge as well. The deciding factor is the frame: the 1129 surface applies its second leaf to a channel iron frame, while the MacPro hinges mortise into the frame.
19) We standardize on steel hinges. Is there a non-ferrous alternative to the Hager 1129 for exterior or wet locations?
The Hager 1129 is a steel hinge with a steel pin. Where a facility specifies non-ferrous material, the McKinney T2314 is a non-ferrous standard weight 5-knuckle hinge, matching the 1129 on knuckle count and standard weight, and rated medium duty. The Don-Jo HWBB85045 is a heavy weight full mortise ball bearing hinge in brass, 5 inch by 4-1/2 inch, heavy duty. Both differ from the 1129 in base material, so verify the opening's material and finish requirements before mixing them onto the same run of doors.
20) How many hinges do I need per door and where do they go on a hollow metal opening?
Hager publishes its standard hinge location chart, which gives the layout for commercial openings, and a hinge size option chart for picking size against door width and thickness. Both are worth pulling before you order the 1129, because on a half mortise you are also laying out the surface applied leaf on the channel iron frame and the frame face has to be clear at those points.
How fast can I get the Hager 1129-4.5-USP 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 1129-4.5-USP come with a warranty?
Absolutely. The Hager 1129-4.5-USP 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 1129-4.5-USP?
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