McKinney TA786 Square Corner 3...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.05
McKinney TA786 Square Corner 3 Knuckle Full Mortise Hinge

McKinney TA786 Square Corner 3 Knuckle Full Mortise Hinge

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Model: TA786 4-1/2X4-1/2 26D
$52.05
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$52.05
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McKinney Overview
 

McKinney is ASSA ABLOY’s line of high quality architectural hinges for commercial use. McKinney joined the ASSA ABLOY family of products in 1996. Under the ASSA ABLOY banner, we have greatly expanded the research and development, and manufacturing capabilities of this product line to have the most impact on improving custom hinge manufacturing.

Full Mortise Hinges
Full mortise hinges come in a variety of metals, finishes, sizes, and weights to meet all your load bearing and security applications. They include two, three, and five knuckle styles, swing clear hinges, wide throw hinges, anchor hinges, electric hinges, institutional hinges, and pivots.


The most common application is a flush door/frame/wall condition using a hollow metal frame with a standard hollow metal or wood door which is flush or 1/16" inset from the face of the frame, with a wall which is either flush (or inset from the
face of the frame. Recommended to hang door for 180Ëš swing: Full Mortise Hinge. The same hinge could be used with a wood or aluminum frame provided the door/frame/wall conditions are flush.

Oil Impregnated Bearing (TA)
One piece, non-ferrous, and self-lubricating bearings ensure even longer-lasting wear and resistance to clogging, corrosion, and hinge failure. This feature is standard and supplied on all five knuckle bearing hinges up to 5" height. All 6" or larger are Ball Bearing hinges.

 
RESOURCES & DOWNLOADS

McKinney Full Line Catalog

Manufacturer Resources

Product Specs

Subcategory:
Full Mortise Hinges
Knuckles:
3
Corner Style:
Square Corners
Fasteners:
Machine Screw: 1/2 in x #12-24; Wood Screw : 1-1/4 in x #12
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Hinges
Features:
Recommended for Standard Weight, Medium Frequency Doors, or Doors With Closing Devices, Recommended to Hang Door for 180˚ Swing
Duty Level:
Heavy Duty
Commercial/Residential:
Commercial
Product Model:
TA786
Product Category:
Door Hinges and Pivots
Product Substrate:
Steel
Department:
Door Hardware

McKinney TA786 4-1/2X4-1/2 26D – Frequently Asked Questions

1) What sizes does the McKinney TA786 hinge come in?
Three sizes: 4-1/2 x 4 inches, 4-1/2 x 4-1/2 inches, and 5 x 4-1/2 inches, all in 626 satin chrome. The first number is hinge height, the second is open width. Measure the existing hinge in the door before ordering, since the mortise is cut to that height and a different height means recutting both the door edge and the frame. Standard hollow metal frames are usually prepped for 4-1/2 inch hinges, and the 5 inch size is normally used on wider or heavier doors that need more leaf width to clear the trim.
2) Will a square corner hinge drop into my existing door prep, or do I need radius corners?
The TA786 has square corners, which is the standard prep on hollow metal frames and on commercial wood doors machined for square corner hinges. If the hinge you are pulling out has rounded corners, it came from a router prep with a radius (commonly 1/4 inch or 5/8 inch) and a square corner hinge will not seat in it without chiseling the corners out. Pull one existing hinge and look at the corners before you order. For a radius prep, a 1/4 inch radius option like the Orca Hardware 4014 Series is the shape you want.
3) Do McKinney TA786 hinges come with screws, and what size are they?
Screws are supplied both ways: 1/2 inch #12-24 machine screws for a hollow metal frame or a metal door, and 1-1/4 inch #12 wood screws for a wood door or wood frame. So a typical hollow metal frame with a wood door is covered out of one box, machine screws into the frame leaf and wood screws into the door leaf. Nothing else is needed to hang the hinge on a properly prepped opening.
4) Do I need non-removable pin hinges on an outswing exterior door?
Yes, and the TA786 can be ordered with the NRP option. On an outswing door the barrel sits on the outside, so a standard pin can be tapped out and the door lifted off the hinges. NRP puts a set screw in the barrel that seats against the pin once the door is closed, so the pin cannot be driven out from outside. Specify NRP on every outswing exterior door, stairwell door, and any opening where the hinge barrel is on the unsecured side. Inswing interior doors do not need it.
5) Will the TA786 work on an aluminum frame or only hollow metal?
Either, as long as the door, frame, and wall conditions are flush. McKinney describes the most common application as a flush door, frame, and wall using a hollow metal frame with a standard hollow metal or wood door sitting flush or 1/16 inch inset from the face of the frame, and states the same hinge works with a wood or aluminum frame under those same flush conditions. Where the door or frame is not flush, a full mortise hinge is the wrong style and you want a half mortise, half surface, or full surface hinge instead.
6) What should I use instead of a McKinney TA786 if I need to run power through the door for an electric lock?
The TA786 is a plain mechanical hinge with no provision for wire, so an opening with an electrified lock or exit device needs a transfer hinge in its place. The Command Access ETH-CB70 is a three knuckle standard weight steel base energy transfer hinge, which is the closest match to the TA786's three knuckle full mortise format. The Stanley Security CECB1900R54L is a three knuckle concealed bearing concealed conductor architectural hinge, steel full mortise, standard weight, 4-1/2 by 4-1/2, square corner, left-handed, four-wire, so it matches the square corner and 4-1/2 x 4-1/2 size the TA786 also offers. If the door also needs position monitoring, the Command Access ETM-CB70 adds door position sensing on a three knuckle steel base.
7) Can I use a residential hinge in place of the McKinney TA786 on an apartment unit door?
They are not the same class of hinge. The TA786 is a commercial heavy duty steel hinge intended for standard weight, medium frequency doors or doors with closing devices. Hinges like the Emtek 91013 residential plain bearing pair, the Delaney 3-1/2 x 3-1/2 bulk steel residential interior hinges, and the Schlage Residential S3P1010 3.5 x 3.5 square corner plain bearing mortise hinges are built for residential interior use, and the Delaney and Schlage sets run 3-1/2 x 3-1/2 where the TA786 starts at 4-1/2 x 4. On a corridor or unit entry door with a closer, stay with the commercial hinge; the residential pairs suit interior passage doors inside the unit.
8) What is the closest equivalent to a McKinney TA786 hinge from another commercial hinge brand?
The TA786 is a steel, square corner, three knuckle full mortise hinge rated heavy duty for commercial openings. The closest peers by construction are the Ives 3CB1HW, a steel heavy weight concealed bearing full mortise hinge with three knuckles, and the Hager BB1168, a full mortise heavy duty ball bearing hinge furnished with a non-removable pin. Both are three knuckle or full mortise commercial steel hinges in the same heavy duty class, so either can carry the same standard weight door in an existing hollow metal frame prep. Confirm the size and finish you need matches before you commit, since the TA786 runs 4-1/2 x 4, 4-1/2 x 4-1/2, and 5 x 4-1/2 in 626 satin chrome.
9) I ordered the McKinney TA786 with the NRP option for an outswing exterior door. Is there another hinge that comes that way?
Yes. The TA786 can be ordered with the NRP non-removable pin option, which is what you want on an outswing door where the barrel is exposed on the outside. The Hager BB1168 is a non-removable pin full mortise ball bearing heavy duty hinge, so it carries NRP as part of the model itself. The Deltana CSB45N is a 4-1/2 x 4-1/2 square hinge pair with a non-removable pin, matching the 4-1/2 x 4-1/2 size and square corner the TA786 also offers. The Deltana DE44R5TA is a 4 x 4 security hinge with a 5/8 radius corner in steel, so it is a radius corner prep rather than the square corner the TA786 uses.
10) My frame is prepped for radius corner hinges, not square. What do I order instead of the McKinney TA786?
The TA786 is a square corner hinge and will not drop into a frame or door prepped with radius corners. The Orca Hardware 4014 Series is a 4 x 4 with a 1/4 inch radius corner plain bearing commercial hinge, and the 3514 Series is the same 1/4 inch radius corner plain bearing commercial hinge at 3-1/2 x 3-1/2. Both are medium duty. If your prep is a 5/8 inch radius instead, the Delaney 4 x 4 bulk residential exterior hinges are a 5/8 inch radius pair. Measure the corner radius in the existing mortise before ordering, since the radius has to match the router that cut the pocket.
11) My existing frame is not prepped for a full mortise hinge. What are the alternatives to the McKinney TA786?
The TA786 requires a full mortise prep in both the door and the frame. Where the frame cannot take that, the Hager 1129 is a half mortise plain bearing commercial hinge, 4-1/2 standard weight steel, rated heavy duty, which mortises into the door and applies to the face of the frame. The Hager 990 STEEL is a full surface hinge, 3 x 4 with a welded tip, that applies to both faces with no mortise at all. For a center-hung interior door that swings both directions, the BEST DAP-3 is a heavy duty double acting pivot for commercial interior doors.
12) What is an oil impregnated bearing hinge, and how is it different from a ball bearing hinge?
The TA prefix on the TA786 means oil impregnated bearings: one piece, non-ferrous, self-lubricating bearings that resist clogging, corrosion, and hinge failure without needing service. A ball bearing hinge uses caged steel balls between the knuckles instead. Both carry the load off the pin so the door does not squeal or sag, but the oil impregnated design has nothing to dry out or contaminate, which is why it holds up in dusty or dirty conditions. McKinney supplies oil impregnated bearings on bearing hinges up to 5 inch height and ball bearings on 6 inch and larger.
13) How many McKinney TA786 hinges do I need per door?
Three per leaf is the normal commercial count for a door up to 7 feet 6 inches tall, and a fourth is added for each additional 30 inches of height. The TA786 is sold as a single hinge, so a standard 7 foot opening takes a quantity of three. If you are standardizing a building, count openings times three and order the same size and finish across the job so every door in the stack matches.
14) Does a full mortise hinge let the door swing a full 180 degrees?
That is what it is picked for. McKinney recommends the full mortise style, which the TA786 is, to hang a door for a 180 degree swing. Both leaves mortise into the door edge and the frame rabbet so the barrel projects clear of the face, letting the door swing back flat against the wall where the wall condition allows it. If the opening needs the door to swing both ways instead, a hinge is the wrong part and a double acting pivot such as the BEST DAP-3 handles it.
15) Do I have to order the McKinney TA786 hinge left or right handed?
No. The TA786 is a standard full mortise butt hinge with a removable pin, so one part number covers both hands, you just flip it. Handing only comes into it on hinges with electrical wiring or a fixed pin, such as the Stanley Security concealed conductor hinge that is ordered left-handed. Order the TA786 by size and finish and it will hang either way.
16) What is the closest substitute for a McKinney TA786 in 4-1/2 x 4-1/2 satin chrome?
Two direct swaps in the same size and finish. The Don-Jo HWBB74545 is a heavy weight full mortise ball bearing hinge, 4-1/2 x 4-1/2 inches in satin chrome, heavy duty. The Orca Hardware 3535 Series is a 4-1/2 x 4-1/2 inch square corner ball bearing commercial hinge at medium duty. Both are ball bearing rather than the TA786's oil impregnated bearing, and both are full mortise so they use the same prep. In 5 x 4-1/2, the Don-Jo HWBB75045 is the equivalent size in steel with a satin chrome finish.
17) For a heavy or high traffic door, what carries more weight than the McKinney TA786?
The TA786 is a heavy duty three knuckle hinge recommended for standard weight, medium frequency doors or doors with closing devices. For heavier leaves, the BEST CB1969R is a concealed bearing heavy weight pivot-reinforced hinge rated heavy duty, which reinforces the top of the door where a heavy leaf works hardest. The Stanley FBB191 is a five knuckle full mortise standard weight hinge at 4.5 x 4.5, and the Ives 3CB1HW is a steel heavy weight concealed bearing full mortise hinge with three knuckles, both rated heavy duty. Weigh the door leaf and count the openings per day before you step up, since the TA786 already covers standard weight doors with closers.
18) What is the difference between the McKinney TA786 and a Don-Jo HWBB heavy weight ball bearing hinge?
Both are heavy duty full mortise commercial hinges and both are offered in satin chrome. The Don-Jo HWBB74545 and HWBB84545 are heavy weight full mortise ball bearing hinges at 4-1/2 x 4-1/2 in satin chrome, and the HWBB75045 is the same style in 5 x 4-1/2 steel, sizes that line up with the TA786's 4-1/2 x 4-1/2 and 5 x 4-1/2. The TA786 is a three knuckle hinge with oil impregnated bearings, which are one piece, non-ferrous and self-lubricating, while the Don-Jo units are ball bearing. The Don-Jo HWBB85045 is the brass version of the 5 x 4-1/2 in satin chrome, where the TA786 is steel throughout.
19) Is a square corner ball bearing commercial hinge the same thing as the McKinney TA786?
They share the square corner and the full mortise format but differ in the bearing. The TA786 uses oil impregnated bearings, which are one piece, non-ferrous and self-lubricating, and it is a three knuckle heavy duty steel hinge. The Orca Hardware 3535 Series is a 4-1/2 x 4-1/2 square corner ball bearing commercial hinge rated medium duty, and the Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners. The Emtek 94013 is a heavy duty ball bearing pair at 3-1/2 x 3-1/2 with square corners in plated steel. Match the size to your existing mortise first, then the bearing type to the traffic the door sees.
20) Will the McKinney TA786 work on a detention or prison door?
No, that is a different hardware class. The TA786 is a commercial heavy duty full mortise hinge for standard weight, medium frequency doors. Detention openings use hinges like the BEST BB855, a heavy-duty steel double weight concealed ball bearing prison hinge in the detention hardware series, or the Stanley Security double weight prison hinge at 5 by 6 furnished with no holes and not swaged. The Hager 990 STEEL is a full surface prison hinge, 3 x 4, with a welded tip, heavy duty, which mounts to the face of the door rather than into a mortise. Those are the parts to spec for a secure facility opening.
21) The door needs to close itself but I do not want a closer. Is there an alternative to the McKinney TA786?
The TA786 is a plain full mortise hinge and does not close the door on its own; it is recommended for standard weight, medium frequency doors or doors with closing devices. If you want the hinge itself to do the closing, the Stanley Security 2060R is a full mortise spring hinge with a square corner at 4.5 x 4.5 on a ferrous steel base, rated heavy duty. That size and corner style match the 4-1/2 x 4-1/2 square corner the TA786 offers, so the existing mortise generally carries over.
22) I want to standardize hinges across a facility. Does the McKinney TA786 cover both my 4-1/2 and 5 inch openings?
The TA786 runs 4-1/2 x 4, 4-1/2 x 4-1/2, and 5 x 4-1/2, all in 626 satin chrome with square corners, so one steel heavy duty model covers both the 4-1/2 and 5 inch preps in your building. If some openings need a different mounting, the Ives 3CB1 covers medium duty three knuckle concealed bearing full mortise doors, and the Command Access ETH-CB70 covers the same three knuckle standard weight format where a door needs power transfer. Standardizing on square corner and 626 across those keeps one look and one prep across the doors.
23) Is the McKinney TA786 a concealed bearing hinge, and does the barrel show?
No, the bearings are visible in the knuckle joints. The TA786 is a 3 knuckle hinge with oil impregnated bearings sitting between the knuckles, so you see the bearing rings on the barrel. A concealed bearing hinge hides them inside the knuckle for a cleaner barrel, which is what the Ives 3CB1 3 knuckle concealed bearing full mortise hinge gives you at medium duty, or the Ives 3CB1HW in heavy weight steel. If the specifier called for concealed bearings on an architectural opening, go that route.
24) What is the difference between a 3 knuckle hinge like the McKinney TA786 and a 2 knuckle hinge?
Knuckle count changes the barrel profile and the load path. The TA786 is a three knuckle full mortise hinge in steel, heavy duty. The Hager 920 is a full mortise concealed plain bearing hinge with two knuckle steel construction, rated medium duty. A three knuckle barrel splits the leaf into three segments where a two knuckle splits it into two, which shows on the face of the door once it is hung. If you are matching what is already on the other doors in a corridor, count the knuckles on an existing hinge before ordering.
How fast can I get the McKinney TA786 4-1/2X4-1/2 26D 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 McKinney TA786 4-1/2X4-1/2 26D come with a warranty?
Absolutely. The McKinney TA786 4-1/2X4-1/2 26D 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 McKinney TA786 4-1/2X4-1/2 26D?
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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