ABH A570HD Heavy-Duty Aluminum...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$206.00
$202.43
ABH A570HD Heavy-Duty Aluminum Continuous Gear Hinge Full Surface Clear Anodized Aluminum Finish 450 lb Capacity

ABH A570HD Heavy-Duty Aluminum Continuous Gear Hinge Full Surface with 450 lb Capacity

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Model: A570 HD079 C
$206.00
$202.43
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$206.00
$202.43
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ABH A570HD Heavy-Duty Aluminum Continuous Gear Hinge — Full Surface, 450 lb Capacity

The ABH A570HD Aluminum Continuous Gear Hinge delivers heavy-duty performance for demanding commercial applications with a 450 lb maximum door weight capacity and 48" maximum door width. This BHMA Grade 1 full-surface hinge features a narrow frame leaf design with 1/16" door inset, making it ideal for narrow-faced frame applications where full-length geared support is essential. Built with commercial-grade aluminum construction and fire door approvals for both metal and wood doors, the A570HD provides smooth operation and long service life in high-traffic institutional environments. BAA Qualified for federally funded projects.

Key Features & Benefits

  • Heavy-Duty Load Capacity: Supports up to 450 lb maximum door weight with 48" maximum door width for large commercial door applications.
  • BHMA Grade 1 Performance: Meets the highest commercial standards for durability and operational reliability in demanding environments.
  • Narrow Frame Compatibility: 1/16" door inset with narrow frame leaf profile designed for narrow-faced frame installations.
  • Fire Door Approved: Certified for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes, with optional FR rating extensions.
  • BAA Qualified: Compliant with the Buy American Act for government and federally funded projects.
  • Commercial-Grade Aluminum Construction: Continuous geared design reduces hinge wear, door sag, and frame stress for extended service life.
  • Complete Fastener Package: Includes 12-24 X 3/4" undercut self-drilling, thread-forming tek machine screws for frame; 1/4-20 sex bolts and shoulder bolts for door installation.
  • Multiple Length Options: Available in 79", 83", 85", 95", and 120" standard lengths; custom sizes available.
  • Finish Options: Clear Anodized, Dark Bronze Anodized, and Black Anodized for architectural coordination.

Technical Specifications

  • Hinge Type: Full Surface
  • Maximum Door Weight: 450 lb
  • Maximum Door Width: 48"
  • Door Inset: 1/16"
  • Fasteners (Frame): 12-24 X 3/4" undercut self-drilling, thread-forming tek machine screws
  • Fasteners (Door): 1/4-20 sex bolts and shoulder bolts
  • Grade: BHMA Grade 1
  • Fire Rating: Metal doors up to 90 min; wood doors up to 60 min
  • BAA Qualified: Yes
  • Application: Commercial
  • Available Lengths: 79", 83", 85", 95", 120"
  • Available Finishes: Clear Anodized (C), Dark Bronze Anodized (D), Black Anodized (B)

Typical Applications

  • Educational Facilities and Schools
  • Healthcare Institutions and Hospitals
  • Commercial Office Buildings
  • Institutional and Government Facilities
  • High-Traffic Commercial Entrances
  • Fire-Rated Door Assemblies
  • Heavy Commercial and Storefront Door Installations

Why ABH A570HD?

The A570HD combines 450 lb load capacity, BHMA Grade 1 certification, fire-door approvals for metal and wood assemblies, and BAA compliance in a single full-surface continuous gear hinge. Engineered for the installations where dependable performance and long service life are non-negotiable — schools, hospitals, government buildings, and high-traffic commercial entrances.

Product Specs

Product Group:
Door Hinges and Pivots
Door Weight:
450
Fasteners:
12-24 X 3/4" undercut self drilling, thread forming tek machine screws
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Subcategory:
Full Surface Hinges
Commercial/Residential:
Commercial
Hinge Type:
Full Surface
Keyed:
N/A
Keyed Function:
N/A
BAA Qualified:
Yes
Product Model:
A570HD
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

ABH A570 HD079 C – Frequently Asked Questions

1) Is the ABH A570HD approved for a fire rated door opening?
Fire door approvals on the A570HD cover metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. A 90 minute hollow metal opening is covered; a 90 minute wood door assembly is not, and that opening needs a hinge carrying the approval for it. The hinge is also BHMA Grade 1, the top grade for hinges, which is what most institutional specs call for on a continuous geared hinge in a rated corridor.
2) Full surface or full mortise continuous geared hinge, which one do I need?
The A570HD is a full surface hinge: the leaves fasten to the face of the door and the face of the frame, so nothing gets machined into the door edge or the frame rabbet. That is why it is the usual pick on retrofits, on frames whose butt hinge preps are already chewed up, and on narrow faced frames, since it uses a narrow frame leaf profile. It stays visible when the door is closed. Full mortise is the alternative when the hinge needs to disappear at the door edge and you can prep for it: Design Hardware FMHD is a heavy duty full mortise geared hinge, and the Pemko FM-RG Series is a Grade 1 aluminum full mortise raised geared hinge with 180 degree swing. New openings that care about appearance go full mortise; existing openings usually go full surface.
3) My door has a 3/32 inch inset. Will the ABH A570HD work on it?
No. The A570HD is built around a 1/16 inch door inset and that is the only inset it is made in, so it will not sit correctly on a 3/32 inch inset opening. Inset has to match, or the door will not close flush and the gear line will bind. For a 3/32 inch inset door, the BEST 663HD is a heavy duty continuous hinge made for 3/32 inch inset doors and 90 minute UL fire rated. Measure the gap between the door face and the frame face before ordering either one.
4) Can I replace three butt hinges with the A570HD on a door that has started to sag?
That is the common use for this hinge. Because it is full surface, neither the door edge nor the frame rabbet gets machined, so worn or oversized butt hinge mortises can stay where they are and the geared hinge picks up the door along its full height instead of at three points. Four things to confirm first: the door is under 450 lb, it is no wider than 48 inches, the inset is 1/16 inch, and you have access to both faces of the door, because the door leaf fastens with 1/4-20 sex bolts that go through the door.
5) What fasteners come with the ABH A570HD, and do I have to drill through the door?
Everything needed to hang it is in the box. The frame leaf mounts with 12-24 x 3/4 inch undercut self drilling, thread forming tek machine screws, which cut their own threads in a hollow metal frame, so there is no drilling and tapping step at the frame. The door leaf mounts with 1/4-20 sex bolts and shoulder bolts, which through bolt the door. That means yes, the door gets drilled through and you need to work both faces of it. Plan the install for a two sided approach and expect the door off its existing hinges while you do it.
6) What full surface continuous geared hinges compare to the ABH A570HD for a heavy commercial door?
Three sit in the same configuration. The Design Hardware FSHD is a full surface heavy duty continuous geared hinge. The BEST 664HD is a heavy duty full surface continuous geared hinge with a 90 minute UL fire rating. The NGP HD5700 is a full surface continuous geared hinge with a 1/16 inch door inset at 83 inches, 10C fire rated 90 minutes on hollow metal. The ABH A570HD is a full surface geared hinge at BHMA Grade 1 with a 450 lb maximum door weight and 48 inch maximum door width, approved for metal swinging fire doors to 90 minutes and wood swinging fire doors to 60 minutes, and it is BAA qualified. On a federally funded job the Buy American Act status is usually the deciding line among these, so confirm it for whichever one you specify.
7) What is the closest cross-brand equivalent to the ABH A570HD full surface geared hinge?
The NGP HD5700 is the nearest match in configuration. It is a full surface continuous geared hinge with a 1/16 inch door inset, furnished at 83 inches, described for 1-3/4 inch to 2-1/4 inch doors, and carrying a 10C fire rating of 90 minutes on hollow metal. The ABH A570HD is also a full surface geared hinge with a 1/16 inch door inset and offers 83 inches as one of its standard lengths, along with 79, 85, 95, and 120 inches. The A570HD is BHMA Grade 1, rated to a 450 lb maximum door weight and 48 inch maximum door width, and approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. Both mount to the face of the door and the face of the frame, so the opening prep is the same class of work and neither requires the door edge to be routed.
8) The door edge is already prepped for a mortise hinge and the architect does not want hardware on the face - what continuous hinge should I use instead of the A570HD?
Use a full mortise geared hinge, which sets into the door edge and frame rebate rather than onto the faces. Three that fit that description: the Design Hardware FMHD full mortise heavy duty continuous geared hinge, the Pemko FM-RG series Grade 1 aluminum full mortise raised geared continuous hinge with a 180 degree swing, and the BEST 663HD heavy duty continuous hinge, which is 90 minute UL fire rated and built for 3/32 inch inset doors. The ABH A570HD is a full surface hinge with a 1/16 inch door inset, meaning both leaves land on the face of the door and frame and no edge routing is involved. That difference decides the prep, so it is the first thing to settle before comparing load ratings.
9) Are the BEST 641 and 651 continuous hinges a substitute for an ABH A570HD?
They are a different hinge for a different opening, not a drop-in. The BEST 641 is a steel full mortise standard duty continuous hinge with hospital tips and the BEST 651 is a stainless steel full mortise continuous hinge with hospital tips, and both are catalogued at a medium duty level. The ABH A570HD is a full surface hinge, mounting to the door and frame faces rather than into the door edge, and is rated to a 450 lb maximum door weight with BHMA Grade 1 certification. So two things change at once if you swap: the mounting method and the duty class. If the door edge is already mortised and the leaf is meant to be hidden in the rebate, the 641 or 651 addresses that opening; if the door is a heavy face-mounted commercial leaf, it is a different specification.
10) The door is 1-3/8 inch thick - can I still use the ABH A570HD or is there a better continuous hinge?
For a 1-3/8 inch door, look at the Pemko short leaf flush continuous geared hinge, which is built specifically for 1-3/8 inch doors with Grade 1 construction. A related option is the Pemko CFM84SLF-HD1, an 84 inch full mortise short leaf flush continuous hinge, heavy duty and Grade 1. The ABH A570HD is a heavy duty full surface hinge sized for commercial leaves up to 450 lb and 48 inches wide, with a 1/16 inch door inset, and it fastens through the door with 1/4-20 sex bolts and shoulder bolts, which is a through-bolted attachment that assumes a substantial door. Match the hinge to the actual door thickness before comparing anything else.
11) I need hospital tips on a continuous hinge for a behavioral health or patient corridor - what are the options?
ABH publishes an AHT Advanced Hospital Tip cut sheet covering the A570HD, so the hospital tip treatment is available on that full surface geared hinge. On the full mortise side, the BEST 641 steel continuous hinge and the BEST 651 stainless steel continuous hinge are both furnished with hospital tips, at a medium duty level. If the opening also has to resist a door being tied off or barricaded, the Pemko DSH1000 is an anti-barricade Grade 1 continuous hinge with 100 degree bidirectional operation, which lets the door be pushed the other way from the corridor side. Those are three different problems - ligature-resistant tip geometry, mounting method, and barricade defeat - so decide which one the specification is actually calling out.
12) The fire door assembly is a wood door - which continuous geared hinge covers that?
The ABH A570HD carries fire door approvals for both metal and wood assemblies: metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes, with optional FR rating extensions. Among the comparable geared hinges, the NGP HD5700, HD5400A, and HD1100A each state a 10C fire rating of 90 minutes on hollow metal, and the BEST 664HD full surface geared hinge and BEST 663HD heavy duty hinge each carry a 90 minute UL fire rating. If the opening in question is a wood fire door rather than hollow metal, the door type the approval was issued against is the detail to check on the listing agency label, not the minute count.
13) What do I have to specify when I order an ABH A570HD hinge?
Three things, and one of them is fixed. Door inset is 1/16 inch. Length is 79, 83, 85, 95 or 120 inches, with custom lengths available. Finish is Clear Anodized, Dark Bronze Anodized or Black Anodized, and all three are made in every one of the five standard lengths, so a Black Anodized 120 inch is a real combination and so is a Dark Bronze 79 inch. There is no hand to call out on the order.
14) Can I run wire through the ABH A570HD for an electrified lock or exit device trim?
Not through the standard A570HD, which is the plain full surface geared hinge with no wire path. ABH makes a thru wire version of the same full surface hinge, the A570TW, and that is the model to specify when power has to cross from the frame into the door for an electrified lock, electrified exit device trim, or a door position switch. Decide this before ordering, because swapping to the thru wire version later means pulling the hinge back off the opening.
15) Does the ABH A570HD meet Buy American requirements on a federally funded school or government project?
BAA qualified, so it clears Buy American Act requirements on federally funded work. Paired with that, the A570HD is BHMA Grade 1, rated for commercial use, and approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. That combination of Grade 1, fire approvals on both door materials, and BAA is what public sector hardware schedules typically ask for on a continuous geared hinge, and it lets one hinge model standardize across classroom, corridor, and back of house openings in a facility.
16) What is a half surface continuous geared hinge and when would I use one instead of a full surface hinge like the A570HD?
A half surface hinge puts one leaf on the face of the door and the other into the frame rebate, so only the door side is visible on the face. The NGP HD5400A is a half surface continuous geared hinge in aluminum alloy at 83 inches, 10C fire rated 90 minutes on hollow metal. The ABH A570HD is full surface, meaning both leaves land on the faces, with a 1/16 inch door inset and a narrow frame leaf designed for narrow-faced frames. Half surface is the usual answer when the existing frame is already mortised for hinges and you do not want to fill and re-prep it, while full surface is the usual answer when neither the door edge nor the frame rebate can be cut.
17) Which continuous hinge should I use if the door has to clear a wall or obstruction and cannot hang flush at the frame?
That is an offset condition, and the Design Hardware FSOHD full surface offset heavy duty continuous geared hinge is the one built for it. The offset geometry moves the pivot line away from the frame face so the door swings clear rather than binding. The ABH A570HD is a straight full surface geared hinge with a 1/16 inch door inset and a narrow frame leaf, so it hangs the door tight to the frame face and does not create that offset. Also worth checking on the same opening is the Pemko FM-RG series, an aluminum full mortise raised geared continuous hinge with a 180 degree swing, if what you actually need is the door to lay back flat against the wall.
18) Is there a continuous geared hinge that stays out of sight when the door is closed?
The NGP HD1100A is a concealed continuous geared hinge, furnished at 83 inches and 10C fire rated 90 minutes on hollow metal. Concealed means the hinge sits inside the opening and is not visible on the face of the door when it is shut. The ABH A570HD takes the opposite approach: it is a full surface hinge, so both leaves are visible on the door and frame faces, offered in Clear Anodized, Dark Bronze Anodized, and Black Anodized so the exposed leaf can be coordinated with the rest of the architectural hardware. For a lobby or a design-sensitive corridor that appearance question usually settles the choice before the load numbers do.
19) Aluminum or steel continuous hinge - how do the ABH A570HD and the BEST continuous hinges differ on material?
The ABH A570HD uses commercial-grade aluminum construction in a continuous geared design, finished as Clear Anodized, Dark Bronze Anodized, or Black Anodized, and carries a 450 lb maximum door weight at BHMA Grade 1. The BEST 641 is steel and the BEST 651 is stainless steel, both full mortise continuous hinges with hospital tips at a medium duty level. Aluminum with an anodized finish is the usual choice where the hinge is exposed on the face of the door and has to coordinate with aluminum storefront; stainless is the usual choice where the opening sees washdown, coastal air, or aggressive cleaning chemistry. The Pemko FM-RG series is also aluminum, in a full mortise raised geared configuration.
20) Is there a hospital tip version of the ABH A570HD for patient room doors?
Yes. ABH publishes an Advanced Hospital Tip (AHT) configuration that covers the A570HD along with the A210HD. Hospital tips are the sloped end detail at the top of the hinge that stops IV lines, gown ties, and linens from catching or being anchored on the hinge end, which is what infection control and behavioral health units ask for. The standard A570HD without that detail comes in the five stock lengths and three anodized finishes. If a full mortise hinge with hospital tips fits the opening better, the BEST 641 in steel and the BEST 651 in stainless are both full mortise continuous hinges with hospital tips, listed medium duty rather than heavy duty.
21) Will the ABH A570HD work on a behavioral health patient room door that needs anti-barricade?
No. The A570HD is a standard swing full surface geared hinge with no anti-barricade function, so it will not keep a room accessible if someone blocks the door. That opening calls for a hinge built for it, and the Pemko DSH1000 is an anti-barricade continuous hinge with 100 degree bidirectional operation, meaning the door can be swung the other way to get in. Use the A570HD on corridor, classroom, and back of house doors in the same facility, where its 450 lb capacity and Grade 1 rating are what matters.
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Does the ABH A570 HD079 C come with a warranty?
Absolutely. The ABH A570 HD079 C is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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