McKinney T4A3386 Square Corner Heavy Weight Full Mortise Hinge with ElectroLynx Quick Connect Concealed Circuit

The T4A3386 carries the circuit inside the hinge itself, through concealed plug connectors in the leaves. Power comes from the frame side, through the hinge, and out to the electrified lock or strike on the door, so there is no exposed loop cord or separate power transfer device to mortise into the edge. Brass eyelets protect the wire where it passes through. Each hinge ships with its own installation instructions.

4 amps continuous at 24 volts AC or DC per circuit, on 28 gauge multi-strand wire. That is the figure to size against when you total up the draw of an electric strike, an electrified mortise lock, or a mag lock fed through the hinge.

Count the conductors your door hardware actually needs. The T4A3386 is ordered as 4-wire, 8-wire, or 12-wire ElectroLynx. QC4 and QC8 both use a single 8 position connector; the 12-wire uses an 8 position plus a 4 position connector. A simple electrified lock or strike usually lives inside 4 wires; add request-to-exit, latch monitoring, or a card reader on the door and you climb to 8 or 12.

Put the electric hinge in the center position of the opening. The other two positions take ordinary hinges of the same size and finish, so a standard three-hinge door uses one T4A3386 and two non-electric mates. Ordering the electric hinge alone will not hang the door.

Non-handed. The T4A3386 is a five knuckle hinge and works on either hand, so you stock one part number for the whole building. Handing only becomes an issue on McKinney's two knuckle electric hinges, which are handed.

Two sizes, 4-1/2 x 4-1/2 inches and 5 x 5 inches, both in 626 satin chrome. Match the size to the hinges already in the frame: a 4-1/2 hinge will not fill a 5 inch mortise, and the electric hinge has to drop into the existing center cutout without re-prepping the frame. All three wire counts are offered in both sizes.

Square corners. It drops into a square cut mortise, which is what a hollow metal frame and a factory-prepped commercial door normally carry. If your existing hinges have rounded corners you would be looking at a radius corner hinge instead, or filing the mortise.

The wiring on ElectroLynx hinges is coordinated to work with electro-mechanical hardware from other ASSA ABLOY Group brands, so the connector and wire assignments line up rather than needing a splice at the door edge. Hardware outside that group will generally need a pigtail or terminal splice at the connector.

The McKinney T4A3386 carries power through concealed plug connectors and can be used in conjunction with the Magnetic Monitoring (MM) option on most full mortise hinges, though QC12 x MM is not recommended for wood or solid core doors. If you want monitoring built into the hinge itself, the Command Access ETM-BB68 is an energy transfer monitor hinge with an integrated door position switch, rated heavy duty in the ETM 5 Series. The Command Access ETM-CB70 does door position sensing on a 3 knuckle steel base at a medium duty rating.

The Command Access ETH-BB68 Energy Transfer Hinge is the nearest match: like the McKinney T4A3386, it is a 5 knuckle heavy duty hinge with a steel base that carries power through the hinge to electrified door hardware. The T4A3386 is a heavy duty stainless steel hinge with square corners, ball bearings, and 5 knuckles, ordered with a 4-wire, 8-wire, or 12-wire ElectroLynx connector. The ETH-BB68 belongs to the ETH 5 Series. Both are power transfer hinges intended for the center hinge position on a door with electrified locking hardware.

Not if the opening needs power at the lock. The Don-Jo HWBB84545 is a heavy weight full mortise ball bearing hinge, 4-1/2 inch by 4-1/2 inch in satin chrome, and it matches the McKinney T4A3386 on duty level, mortise type, and bearing type. What it does not do is carry current: the T4A3386 uses concealed ElectroLynx plug connectors to run power from the source through the hinge to electrified door hardware, in 4-wire, 8-wire, or 12-wire configurations. On a door with an electric strike, electrified lock, or maglock fed through the hinge, the HWBB84545 is not a substitute. On a plain mechanical opening in the same 4-1/2 by 4-1/2 size, it is.

The McKinney T4A3386 comes in 4-1/2 inch by 4-1/2 inch with a 4-wire ElectroLynx connector in 626 satin chrome, with square corners and a heavy duty rating. The Stanley Security CECB1900R54L is a three knuckle concealed bearing concealed conductor architectural hinge, steel full mortise, standard weight, 4-1/2 inch by 4-1/2 inch, square corner, left-handed, 4-wire. The Stanley is handed and standard weight; the McKinney T4A3386 is non-handed and heavy weight, so the Stanley requires you to specify the hand of the opening and the McKinney does not.

Electric hinges are installed in the center position on the door, so the top and bottom positions take a standard heavy weight hinge. The Don-Jo HWBB84545 is a heavy weight full mortise ball bearing hinge, 4-1/2 inch by 4-1/2 inch in satin chrome, which lines up with the 4-1/2 by 4-1/2 satin chrome 626 size of the T4A3386. The Hager BB1168 is a non-removable pin full mortise ball bearing heavy duty hinge; the T4A3386 can also be ordered with the NRP non-removable pin option, so an out-swinging exterior door can be secured across all three positions.

Heavy weight is the right call on extra heavy doors and on openings that see high frequency use, which is where McKinney positions this one. Think building entrances, stairwells, classroom and corridor doors in schools, hospital traffic doors. On a low-traffic interior office door a standard weight electric hinge does the job. The stainless steel base and ball bearings are what let it hold up under the cycles.

Both sets are covered. Machine screws are 1/2 inch x #12-24 for the tapped hollow metal frame side, and wood screws are 1-1/4 inch x #12 for a wood door leaf. Those are the standard commercial hinge threads, so replacing an existing heavy weight hinge does not mean re-tapping the frame.

Yes, and it is offered as an NRP option on the T4A3386. Any out-swinging door puts the hinge barrel on the unsecured side, and NRP sets a screw that keeps the pin from being driven out. On an access controlled exterior opening, which is exactly where an ElectroLynx hinge usually lands, specify NRP.

Other concealed circuit hinges we carry cover different weights and connector counts. The BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with 12-wire quick connect, rated medium duty, so it suits lighter openings. Command Access has the ETH-BB68, a five knuckle heavy duty steel base energy transfer hinge, and the three knuckle standard weight ETH-CB70 for medium duty doors. Stanley's CECB1900R54L is a three knuckle concealed bearing, standard weight, 4-1/2 x 4-1/2 square corner, four wire, and it is left handed only, so handing has to be confirmed before you order it.

Match weight, size, corner and finish, and skip the electrical option on those two. Don-Jo's HWBB84545 is a heavy weight full mortise ball bearing hinge, 4-1/2 x 4-1/2 in satin chrome, which pairs with the 4-1/2 inch electric hinge. Hager's BB1168 is a heavy duty full mortise ball bearing hinge available with non-removable pin, worth using on the same leaf if you specified NRP on the electric one. Ives 3CB1HW is a heavy weight concealed bearing full mortise hinge if you prefer a three knuckle look.

No. A concealed circuit hinge like the T4A3386 is a commercial, heavy duty stainless part, and residential hinges carry no circuit at all, so nothing gets power to the lock. Hinges such as the Emtek 94013 heavy duty ball bearing pair or the Delaney 3-1/2 inch residential interior hinges are for house doors and will not substitute here. If the opening is commercial but has no electrified hardware, a plain heavy duty commercial hinge such as the Orca 3535 Series 4-1/2 x 4-1/2 square corner ball bearing is the sensible non-electric route.

The McKinney T4A3386 is a 5 knuckle ball bearing hinge with square corners, built in stainless steel and heavy duty rated, with 28 gauge multi-strand wires rated for 4 amp continuous at 24 volts AC or DC per circuit. Concealed bearing electrified hinges hide the bearing inside the knuckle for a smoother barrel profile: the Ives 3CB1HW is a steel heavy weight concealed bearing full mortise hinge with 3 knuckles, and the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with 12-wire quick connect at a medium duty rating. Knuckle count and bearing style are what change; all mortise into the door and frame the same way.

No. The Emtek 94013 is a heavy duty ball bearing hinge sold in pairs at 3-1/2 inch by 3-1/2 inch with square corners in plated steel, and the Emtek 91013 is a residential plain bearing hinge at the same 3-1/2 by 3-1/2 size. The McKinney T4A3386 is a commercial heavy duty hinge in 4-1/2 by 4-1/2 and 5 by 5, so the mortise cutouts do not line up, and it is the hinge that carries power to electrified hardware through its concealed connectors. Swapping in a 3-1/2 inch residential hinge would mean re-prepping the door and frame and losing the power transfer.

The McKinney T4A3386 is a heavy duty commercial hinge built to carry power to electrified hardware; it is not a detention hinge. For that class of opening, 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, 5 inch by 6 inch, furnished with no holes and not swaged. The Hager 990 STEEL is a full surface prison hinge, 3 inch by 4 inch, with a welded tip and a heavy duty rating. These are mechanical hinges and do not carry current.

A pivot changes how the door hangs. The BEST CB1969R is a concealed bearing heavy weight pivot-reinforced hinge at a heavy duty rating, and the BEST DAP-3 is a heavy duty double acting pivot for commercial interior doors in the Emergency Rescue Hardware series, which is what you use on a door that must swing both directions. The McKinney T4A3386 is a full mortise hinge that mortises into the door edge and frame and also runs 4, 8, or 12 wires through concealed ElectroLynx connectors to electrified hardware. If the opening is single acting and needs power at the lock, the T4A3386 is the hinge; a double acting pivot opening needs a separate power transfer path.

The McKinney T4A3386 is a ball bearing hinge and does not close the door on its own. The Stanley Security 2060R is a spring hinge, full mortise, square corner, 4-1/2 inch by 4-1/2 inch, ferrous steel base, heavy duty rated, which is what closes a door without a surface closer. The T4A3386 is the hinge that carries the power circuit, in 4-wire, 8-wire, or 12-wire form, and it is installed in the center position, so an opening can use a spring hinge in one position and the T4A3386 in the center if the design calls for both.

Weight class and function. The Stanley Security FBB191 is a 5-knuckle full mortise standard weight hinge in 4.5 inch by 4.5 inch with a heavy duty rating. The McKinney T4A3386 is also a 5 knuckle full mortise hinge available in 4.5 by 4.5, but it is a heavy weight stainless steel hinge, and heavy weight hinges are the ones used on extra heavy doors or doors exposed to high frequency use. The T4A3386 additionally carries the ElectroLynx concealed circuit; the FBB191 is a mechanical hinge only.

Only if the frame prep calls for it. The McKinney T4A3386 is a full mortise hinge, meaning both leaves mortise into the door edge and the frame rabbet. The Hager 1129 is a half mortise plain bearing commercial hinge, 4-1/2 inch, standard weight steel with a heavy duty rating, which mortises into the door and surface mounts to the frame. The Hager 990 STEEL is a full surface prison hinge that mounts to the face of both. These are different frame preps, and none of them carries the ElectroLynx power circuit that the T4A3386 does.

No, and handing is the reason to watch. The Hager 920 is a full mortise concealed plain bearing hinge with 2 knuckle steel construction at a medium duty rating. Two knuckle hinges are handed, so the Hager 920 has to be ordered for the hand of the opening. The McKinney T4A3386 is a 5 knuckle ball bearing hinge and is non-handed, so one part number covers left and right openings. The T4A3386 is also heavy duty and carries the ElectroLynx circuit; the 920 is medium duty and mechanical.