ABH A505RB Stainless Steel Pin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$644.00
$632.84
ABH ABH A505RB Door Edge Guard Stainless Steel Pin & Barrel Continuous Hinges ABH-A505RB

ABH A505RB Stainless Steel Pin & Barrel Continuous Hinge with Door Edge Guard - 600 lb Capacity

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Model: A505RB078-US32D
$644.00
$632.84
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$644.00
$632.84
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ABH A505RB Stainless Steel Pin & Barrel Continuous Hinge with Door Edge Guard - 600 lb Capacity

Heavy-Duty Full Concealed Continuous Hinge Solution

The ABH A505RB delivers professional-grade continuous hinge performance with stainless steel pin and barrel construction rated for doors up to 600 lbs and 48" maximum width. This full concealed, heavy-duty hinge features door edge guard protection on both faces and flush mount installation with no door inset required. BHMA 156.25 Grade 1 certified for commercial applications with fire ratings up to 3 hours for hollow metal doors.

Professional Features & Benefits

  • Heavy-Duty Load Capacity: Supports doors up to 600 lbs maximum weight with 48" door width capacity for demanding commercial applications.
  • Door Edge Guard Protection: Integrated edge guard on both door faces provides enhanced security by eliminating gaps between door and frame, preventing prying attempts.
  • Full Concealed Design: Surface-applied installation requires no mortising of door or frame while providing complete concealment for clean aesthetics.
  • Stainless Steel Construction: Pin and barrel components manufactured from stainless steel for corrosion resistance and long-term durability.
  • BHMA Grade 1 Certification: BHMA 156.25 Grade 1 certified ensuring compliance with commercial-grade performance standards.
  • Fire Rating Compliance: Rated for 20 minutes on wood doors, 90 minutes on hollow metal and composite core wood fire doors, and 3 hours on hollow metal doors.
  • Multiple Standard Lengths: Available in 78-3/4", 83-1/8", 85", 95", and 118-3/4" lengths with templated hole patterns for consistent installation.
  • Included Fasteners: Complete with 10-24 x 7/8" undercut self-drilling tek machine screws and #10 x 1-1/4" undercut wood screws, all stainless steel.

Technical Specifications

  • BAA Qualified: Yes
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Weight: 600
  • Fasteners: 10-24 x 7/8" undercut, self-drilling, thread-forming tek machine screws stainless steel and #10 x 1-1/4" undercut wood screws, stainless steel
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Subgroup: Continuous Hinges
  • Product Type: Pin and Barrel Continuous Hinges
  • Subcategory: Full Mortise Hinges

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 ABH Quality?

ABH continuous hinges deliver professional-grade reliability with stainless steel pin and barrel construction rated for 600 lb door capacity and BHMA Grade 1 certification. The heavy-duty design eliminates common alignment problems by evenly distributing weight throughout the entire door and frame while providing enhanced security through door edge guard protection. Engineered for demanding commercial applications where dependable performance and fire rating compliance are essential.

Product Specs

Product Group:
Door Hinges and Pivots
Door Weight:
600
Fasteners:
10-24 x 7/8" undercut, self-drilling, thread-forming tek machine screws stainless steel and #10 x 1-1/4" undercut wood screws, stainless steel
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Subcategory:
Full Mortise Hinges
Commercial/Residential:
Commercial
BAA Qualified:
Yes
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

ABH A505RB078-US32D – Frequently Asked Questions

1) Do I have to mortise the door or frame to install an A505RB continuous hinge?
No mortising. The A505RB is a surface-applied, full concealed hinge that mounts flush with no door inset required, so the existing door and frame edges stay as they are. That makes it a practical fix on an opening where the original hinge pockets are chewed out or elongated, since the continuous leaf spans past the damaged prep instead of relying on it. Screws come in the box: 10-24 x 7/8 inch undercut self-drilling thread-forming tek machine screws for metal, and #10 x 1-1/4 inch undercut wood screws, all stainless.
2) What fire rating does the ABH A505RB hinge carry?
Three ratings depending on what the door is made of: 20 minutes on wood doors, 90 minutes on hollow metal and composite core wood fire doors, and up to 3 hours on hollow metal doors. So a 3 hour stair or shaft opening in hollow metal is covered, but the same hinge on a wood door only gets you 20 minutes. It is also BHMA 156.25 Grade 1 certified.
3) Does the ABH A505RB meet Buy American requirements for a federal job?
Yes, the A505RB is BAA qualified, which is what a government or municipal spec asks for on the hinge line item. It is a commercial grade product, BHMA 156.25 Grade 1 certified, and gets specified on government buildings, schools, healthcare, and multi-tenant residential.
4) I have doors sagging and hinge screws pulling out of the frame. Will a continuous hinge fix that?
That is the main reason continuous hinges get retrofitted. Three butt hinges concentrate the whole door load at three points, and once the screws start working out of the frame the door drops and drags. The A505RB runs the full height of the opening and distributes the weight across the entire door and frame, and it mounts on the surface with no mortising, so it covers the elongated hinge prep instead of depending on it. Fasteners are included, both stainless: 10-24 x 7/8 inch self-drilling tek screws for hollow metal frames and #10 x 1-1/4 inch wood screws.
5) What is the closest full mortise Grade 1 continuous hinge alternative to the ABH A505RB?
The Pemko 84" Full Mortise Continuous Hinge Short Leaf Flush Heavy Duty is the closest full mortise Grade 1 peer to the A505RB. Both carry Grade 1 construction, and both mount into the door and frame edge rather than to the face. The difference is the mechanism and the leaf: the A505RB is a stainless steel pin and barrel hinge with an integrated door edge guard on both faces of the door, while the Pemko CFM84SLF-HD1 is a short leaf flush geared hinge in an 84 inch length. If the opening needs the edge guard wrap for anti-pry security, stay with the A505RB; if the prep is a standard short leaf flush mortise, the Pemko crosses over.
6) Which continuous hinges carry a 90 minute fire rating comparable to the ABH A505RB?
The ABH A505RB is rated 20 minutes on wood doors, 90 minutes on hollow metal and composite core wood fire doors, and 3 hours on hollow metal doors. Among the alternatives, the BEST 663HD and BEST 664HD are both 90 minute UL fire rated heavy duty hinges, and the NGP HD1100A, HD5400A and HD5700 each carry a 10C fire rating of 90 minutes on hollow metal. If the opening schedule calls for a 3 hour hollow metal assembly, the A505RB is the one in this group rated to that duration.
7) Is there a lighter duty continuous hinge than the ABH A505RB for interior doors that do not need 600 lb capacity?
Yes. The BEST 641 is a steel full mortise standard duty continuous hinge with hospital tips, and the BEST 651 is the stainless steel full mortise version with hospital tips; both are medium duty. The ABH A505RB is built for 600 lb doors up to 48 inches wide in commercial service. On an interior office or corridor door carrying a fraction of that weight, the medium duty BEST 641 or 651 covers the opening, and the hospital tips give you the sloped end cap that resists catching on clothing or IV lines. Note that the A505RB brings the door edge guard on both faces, which the medium duty BEST hinges do not.
8) My door has a 3/32 inch inset. Will the ABH A505RB work, or do I need a different hinge?
The ABH A505RB is a flush mount hinge with no door inset required, so an opening detailed for a 3/32 inch inset is not what it is built for. The BEST 663HD is a heavy duty continuous hinge specifically for 3/32 inch inset doors and is 90 minute UL fire rated. For a 1/16 inch inset on doors from 1-3/4 to 2-1/4 inches thick, the NGP HD5700 is an 83 inch full surface continuous geared hinge built for that condition. Confirm the actual gap at the hinge edge before ordering, because the inset dimension is what determines which of these three fits.
9) Is the NGP HD1100A concealed continuous hinge an equivalent substitute for the ABH A505RB?
They are not equivalent on certification. The ABH A505RB is BHMA 156.25 Grade 1 certified, while the NGP HD1100A concealed continuous geared hinge is Grade 3 and carries a 10C fire rating of 90 minutes on hollow metal. The A505RB is fire rated 20 minutes on wood doors, 90 minutes on hollow metal and composite core wood fire doors, and 3 hours on hollow metal doors. If the specification on the drawing calls for Grade 1, or if the opening is a 3 hour hollow metal assembly, the HD1100A does not cover it. For a 90 minute hollow metal opening with no Grade 1 requirement, the HD1100A is a concealed geared alternative.
10) I need a continuous hinge for a 1-3/8 inch door. Does the ABH A505RB fit, or is there a better option?
The Pemko Short Leaf Flush Continuous Geared Hinge is built specifically for 1-3/8 inch doors and is Grade 1 construction. The ABH A505RB is engineered around 600 lb commercial doors up to 48 inches wide with an edge guard on both faces, which is a heavier assembly than a 1-3/8 inch door normally carries. For a thin interior leaf, the Pemko FM-SLF short leaf flush is the sized fit; reserve the A505RB for the heavy commercial openings where the load and the anti-pry edge guard are actually needed.
11) Does the ABH A505RB door edge guard serve the same purpose as an anti-barricade hinge?
No, and this is a common mix-up. The edge guard on the ABH A505RB protects both faces of the door and eliminates the gap between door and frame to prevent prying from outside the opening. The Pemko DSH1000 is a Grade 1 anti-barricade continuous hinge with 100 degree bidirectional operation, which lets the door swing both directions so an occupant cannot block it shut from inside. Those solve opposite problems. Behavioral health and detention openings that specify anti-barricade need the DSH1000; the A505RB addresses external forced entry at the hinge edge.
12) What does the door edge guard on the A505RB actually do?
It wraps the hinge edge on both faces of the door, closing the gap between door and frame along the full height. That kills the space a pry bar needs at the hinge edge and protects the door edge itself from wear. Every A505RB configuration ships with the guard on both faces, so there is no half-guard or single-face version to pick between when you order.
13) Can I cut an ABH A505RB continuous hinge down to fit a shorter door?
Order the length, do not field cut it. The A505RB uses templated hole patterns so the fastener spacing lands correctly against the frame and door reinforcement, and cutting the leaf throws that pattern off and voids the fire rating on a labeled opening. With five stock lengths from 78-3/4 to 118-3/4 inches, pick the one just under your door height instead.
14) What finish does the ABH A505RB come in?
One finish only: 630, satin stainless steel. That is the standard commercial stainless finish and it pairs with 630 exit devices, locksets, and push plates already on most institutional openings. The pin and barrel components are stainless throughout, so the hinge holds up on exterior doors, pool and locker rooms, kitchens, and washdown areas where a plated steel hinge would rust at the barrel.
15) Pin and barrel or geared continuous hinge, which should I use?
The A505RB is a pin and barrel hinge: it uses a knuckle and pin arrangement along the full length, closer in feel to a very long butt hinge, and this one is stainless with 600 lb capacity and a full concealed edge guard. Geared continuous hinges run an aluminum gear channel with a cap instead. ZenSupply carries geared options including the Design Hardware Full Mortise, Full Surface, and Full Surface Offset heavy duty geared hinges and the NGP HD1100A concealed geared hinge. Go pin and barrel where you want stainless corrosion resistance and edge guard security; go geared where you want an aluminum body and a surface or offset mounting arrangement.
16) Do I need to order screws or anchors separately with the ABH A505RB hinge?
Everything needed to fasten it ships with the hinge. You get 10-24 x 7/8 inch undercut, self-drilling, thread-forming tek machine screws in stainless for metal doors and frames, plus #10 x 1-1/4 inch undercut wood screws in stainless for wood applications. The self-drilling tek screws mean no pre-tapping on a hollow metal frame. If the opening is fire rated, confirm what the door manufacturer requires for reinforcement before you set the screw pattern.
17) Can I use the ABH A505RB on an aluminum storefront door?
It is built for commercial hollow metal, composite core, and wood doors, with the fire ratings and the included fasteners aimed at those substrates. For aluminum entrances, a geared continuous hinge is the usual route. ZenSupply carries the NGP HD5400A half surface geared hinge in aluminum alloy and the Pemko FM-RG Series aluminum full mortise raised geared hinge, both 83 inch class products for that kind of opening.
18) What is the difference between the ABH A505RB and a standard duty continuous hinge?
Duty level is the split. The A505RB is a heavy duty stainless pin and barrel hinge rated to 600 lbs with BHMA Grade 1 certification and fire ratings to 3 hours on hollow metal. Medium duty options like the BEST 641 steel full mortise hinge and the BEST 651 stainless full mortise hinge, both with hospital tips, suit lighter interior leaves. On a heavy exterior or high-traffic door, the medium duty hinge is the wrong call. Other heavy duty options include the BEST 663HD and BEST 664HD, both 90 minute UL fire rated.
19) What continuous hinge should I use instead of the ABH A505RB when the frame cannot be mortised?
Go to a full surface hinge. The BEST 664HD is a heavy duty full surface continuous geared hinge with a 90 minute UL fire rating, and the Design Hardware FSHD is a heavy duty full surface continuous geared hinge. The NGP HD5700 is an 83 inch full surface geared hinge for 1-3/4 to 2-1/4 inch doors. All three apply to the faces of the door and frame. The ABH A505RB itself is surface applied and requires no mortising of door or frame, so on many retrofits it also solves this without a full surface hinge, while adding the edge guard on both door faces.
20) What is the difference between the ABH A505RB and the Pemko FM-RG raised geared hinge?
The Pemko FM-RG Series is a Grade 1 aluminum full mortise raised geared continuous hinge with a 180 degree swing. The ABH A505RB is stainless steel pin and barrel construction with a door edge guard on both faces, BHMA 156.25 Grade 1 certified and rated to 600 lb. The material is the practical split: aluminum alloy on the FM-RG against stainless on the A505RB, which matters for corrosion exposure and for facilities standardizing on stainless. The FM-RG raised gear also leaves the gear channel exposed at the door edge, where the A505RB wraps the edge with the guard.
21) Can I standardize a facility on the ABH A505RB, or will some openings need a half surface hinge?
Some will. The ABH A505RB is a flush mount stainless steel hinge with no door inset required, available in 78-3/4, 83-1/8, 85, 95 and 118-3/4 inch lengths, which covers standard and tall commercial leaves. Openings where only one side can be surfaced call for a half surface hinge such as the NGP HD5400A, an 83 inch half surface continuous geared hinge in aluminum alloy with a 10C 90 minute fire rating on hollow metal. A practical standard is the A505RB for the heavy stainless openings and a half surface or full surface geared hinge for the frames that will not take the flush mount.
How fast can I get the ABH A505RB078-US32D 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 ABH A505RB078-US32D come with a warranty?
Absolutely. The ABH A505RB078-US32D 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 ABH A505RB078-US32D?
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 ABH A505RB078-US32D 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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