Accentra 6404LN Heavy Duty Ent...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,676.00
$1,300.92
Yale Commercial Yale 6404LN Monroe Heavy Duty Entry Lever Lock YAL-MO6404LN

Accentra 6404LN Heavy Duty Entry Lever Lock with Monroe Lever Design

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Model: YAL-MO-6404LN-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,676.00
$1,300.92
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Accentra 6404LN Monroe Heavy Duty Entry Lever Lock with Augusta Lever Design

Professional Grade 1 Cylindrical Lever Lock Solution

The Accentra 6404LN Monroe Heavy Duty Entry Lever Lock delivers commercial-grade security with ANSI/BHMA Grade 1 certification and UL-cUL fire rating up to 1-1/2 hours. This preassembled cylindrical lock features a 2-3/4" backset, 1/2" stainless steel latchbolt throw, and heavy-gauge steel mechanism with zinc-plated dichromate finish. Designed for 1-3/4" door thickness with standard guardbolt that deadlocks the latchbolt when the door is closed.

Professional Features & Benefits

  • UL-cUL: UL-cUL fire-rated up to 1-1/2 hours
  • Mechanism: Heavy-gauge steel, zinc-plated, dichromated
  • Backset: 2-3/4"
  • Latchbolt: 1/2" stainless steel throw
  • Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
  • Door Thickness: 1-3/4" only
  • Lead Shielding: Available to order
  • Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin available to order.
  • Reversibility: Handing must be specified for all functions and designs
  • Strikes: 1-1/4" lip ANSI strike supplied; other lip lengths and strikes available to order; all reversible
  • Finishes: Available in 626 finish only
  • Warranty: 7-year mechanical

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/or 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 Accentra Quality?

Accentra cylindrical lever locks deliver professional-grade reliability with heavy-gauge steel construction and ANSI/BHMA Grade 1 certification for demanding commercial applications. The 7-year mechanical warranty and UL-cUL fire rating up to 1-1/2 hours demonstrate the manufacturer's commitment to quality and code compliance. Engineered for demanding commercial applications where dependable performance and security are essential.

Product Specs

Series:
6400 Series
Subcategory:
Cylindrical
Keyed Function:
Single Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
Yes
Commercial/Residential:
Commercial
Handle Type:
Lever
Lock Function:
Entrance
Product Attribute:
Cylindrical Locks
Product Model:
YAL-6404LN
Product Function:
Entrance
Lever Design Name:
Augusta Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Accentra YAL-MO-6404LN-626 – Frequently Asked Questions

1) Do I have to specify handing when ordering the Accentra 6404LN lever lock?
Yes. Handing has to be given on every function and design in the 6400LN line, so this is not a field-reversible lever. Determine the hand from outside the opening: if the hinges are on your right and the door swings away from you, that is right hand. Get it wrong and the lever is upside down. The strike is the one forgiving part, since all strikes in the line are reversible.
2) What does the entrance function do on the Accentra 6404LN, and is it the right lock for an office door?
Entrance function with a single cylinder: keyed from the outside, and the inside lever always retracts the latch for free egress. It suits tenant entry doors, offices, and multi-tenant corridor doors where staff lock up from the outside with a key. If you need a door that stays locked outside at all times and never gets left unlocked, look at a storeroom function instead, such as the Hager 2580 with the Withnell lever.
3) Will the 6404LN latch into the strike already in my frame?
The latchbolt is stainless steel with a 1/2 inch throw on a 2-3/4 inch backset, and a 1-1/4 inch lip ANSI strike ships with the lock. If your frame carries an ANSI strike prep and the existing lip reaches your frame face, you can reuse it. Deep frame returns or a stop that sits proud need a longer lip; other lip lengths and strike types can be ordered. Note the backset, since a door bored 2-3/8 will not take this chassis.
4) What is a Grade 1 alternative to the Accentra 6404LN entry lever for a door thicker than 1-3/4 inches?
The 6404LN is built for 1-3/4 inch doors only, so a thicker door needs a different lock. The Falcon K101 is a Grade 1 heavy duty cylindrical lever lock that covers 1-3/8 inch to 2-1/4 inch doors, and the Dexter C1000 asylum function lock covers 1-3/8 inch to 2 inch. Note that both of those are different functions - K101 is passage, non-keyed, and the C1000 asylum is a keyed institutional function - so confirm the opening actually wants entrance operation before substituting.
5) Is there a Grade 2 entry lever I can use instead of the Accentra 6404LN on lighter-traffic doors?
Yes. The Hager 2525 is a Grade 2 commercial cylindrical entry lock with a lever handle, rated for 1-3/8 inch to 2 inch doors, and the Falcon B511CP6D is a Grade 2 medium duty cylindrical lever in entry/office function. The Cal-Royal AG00 entrance lever is Grade 2 with a 6-pin Schlage C keyway and a 2-3/8 inch backset. The 6404LN itself is ANSI/BHMA Grade 1 with a 2-3/4 inch backset and a 6-pin brass cylinder, so the Grade 2 options change both the cycle rating and, in the AG00's case, the door prep.
6) The 6404LN is entrance function - what should I order for a storeroom or classroom door instead?
Entrance function on the 6404LN means the outside lever can be unlocked from the inside, which is not what a storeroom or classroom door wants. For storeroom, the Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt, and the Hager 2580 is a Grade 2 storeroom cylindrical lock with a Withnell lever. For classroom, the Dexter C1000 classroom lock is Grade 1 with a clutching lever, and Dexter also builds a Grade 1 classroom security version. The Cal-Royal AG03 classroom lever is Grade 2 with a 2-3/4 inch backset, which matches the 6404LN's backset prep.
7) Can I use a Baldwin Estate 5103 or Kwikset Breton lever in place of the Accentra 6404LN?
Not as a like-for-like swap on a commercial opening. The 6404LN is a keyed, single-cylinder entrance lever certified to ANSI/BHMA Grade 1 with UL-cUL fire rating to 1-1/2 hours. The Baldwin Estate 5103 with 5048 rose is offered in passage, privacy and half dummy functions, none of which are keyed entry. The Kwikset 200BRNL Breton is a Grade 3 passage lever for 1-3/8 to 1-3/4 inch doors, and the Kwikset 300BRNL Breton is Grade 3 privacy. Those are residential-grade and non-keyed, so they will not hold an entrance function or a fire-rated commercial spec.
8) What cylinder and keying comes with the Accentra 6404LN entry lever?
Brass 6-pin cylinder, keyed random, with two keys in the box. A 7-pin cylinder can be ordered if your facility runs a 7-pin master system. Keyed random means each lock arrives on its own random key, so if you are outfitting a building and want keyed-alike or a master system, that has to be set up as an order specification rather than assumed.
9) Is a Grade 1 cylindrical lever worth it over a Grade 2 for an office building?
The 6404LN is ANSI/BHMA Grade 1 with a heavy-gauge steel mechanism, zinc plated and dichromated, which is the level specified for high-traffic commercial openings that see constant cycling. Grade 2 entry levers like the Hager 2525 or Falcon B511CP6D are medium duty and cost less to put on low-traffic interior doors. A common approach is Grade 1 on corridor and tenant entries, Grade 2 on back-of-house.
10) Can I use the Accentra 6404LN on an X-ray or imaging room door?
Lead shielding is available to order on the 6400LN line, which is what a radiology or imaging suite opening requires so the lock bore does not become a gap in the shielded wall assembly. It is not standard, so it has to be called out on the order. The lock is otherwise suited to healthcare use as a keyed entry function.
11) I need matching passage and privacy levers to go with the 6404LN entry locks. What pairs with it?
The 6404LN covers the keyed entry openings only. For the non-keyed doors on the same job you need other functions from the same LN trim family so the lever and rose profile match. If you are pulling from another brand instead, keep the whole opening group on that brand, for example the Dexter C1000 Grade 1 passage lever or the Corbin Russwin CL3110 Grade 1 passage, both of which are also Grade 1 so the feel and durability stay consistent across the floor.
12) We need a fire-rated lever lock - which comparable locks state a fire rating like the Accentra 6404LN?
The 6404LN carries a UL-cUL fire rating up to 1-1/2 hours with a guardbolt that deadlocks the latchbolt when the door is closed. Among comparable cylindrical levers that also state a fire rating, the Corbin Russwin CL3110 is a Grade 1 vandal resistant passage/closet lever for 1-3/4 inch to 2 inch doors, and the Falcon K101 is a Grade 1 heavy duty passage lever for 1-3/8 inch to 2-1/4 inch doors. Both are passage function rather than keyed entrance, so they suit a fire-rated opening that does not need to lock.
13) Is there a Grade 1 cylindrical lever lock that can be electrified where the 6404LN cannot?
The 6404LN is a mechanical keyed entrance lever with no electrical option. If the opening needs to release from an access control system, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock running 12VAC/DC, for 1-3/4 inch to 2 inch doors, and is also offered in a keyed 12VAC/DC version with the NZ lever and D rose. Fail safe means the lever unlocks on power loss, which is the opposite behavior from the 6404LN's mechanical lock state, so confirm that suits the code path for that door.
14) I need the same look on doors that should not lock - what pairs with the Accentra 6404LN entry lever?
For the non-locking openings in the same run, a Grade 1 passage lever keeps the duty level consistent: the Falcon K101 and the Falcon T101 are both Grade 1 heavy duty cylindrical passage levers, and the Design Hardware X75 is a Grade 1 passage lever lockset for 1-3/4 inch doors, matching the 6404LN's 1-3/4 inch door requirement. For openings that need no latch at all, the BEST 9K Series 1DT is a Grade 1 heavy duty single dummy trim. Lever designs differ from the Augusta lever on the 6404LN, so expect a visual difference at the rose.
15) What keyless option replaces the Accentra 6404LN if we want to stop issuing keys?
The 6404LN ships with a brass 6-pin keyed-random cylinder and two keys, so every user carries a key. If you want code entry instead, the Lockey 2835 is a mechanical pushbutton keyless lever lock with ADA compliance for 1-3/16 inch to 2 inch doors, and the 2835DC adds a double combination. The Lockey 1150 is a heavy duty mechanical keypad lever set for 1-1/8 inch to 2 inch doors with an adjustable backset. On the electronic side the Delaney LP250 is a Grade 2 electronic keypad leverlock. Note the Lockey units listed are passage function, so they latch and release by code rather than holding a keyed entrance function.
16) Is a Grade 3 entrance lever like the Callan Artino or Master Lock RL01 a fair substitute for the Accentra 6404LN?
They share the entrance function but not the duty rating. The 6404LN is ANSI/BHMA Grade 1 with a heavy-gauge steel mechanism and a 1/2 inch stainless steel latchbolt throw. The Callan Artino is a Grade 3 entrance leverset and the Master Lock RL Series return style keyed entry lockset is also Grade 3. The Cal-Royal AUS00 entrance/office lever is Grade 3 with a solid brass forged body for 1-3/8 inch to 1-3/4 inch doors. Grade 3 is a lighter cycle and strength class, so these suit low-traffic or residential-style doors rather than the commercial openings the 6404LN targets.
17) Does the 6404LN come in anything other than satin chrome?
626 satin chrome is the only finish offered on the 6404LN, and that is the single variant sold. It is the standard commercial finish, so it matches most existing office, school, and healthcare hardware. If the building is standardized on a brass, bronze, or black finish, you will need a different series or brand to match.
18) Does the 6404LN arrive preassembled or do I build it on the door?
It ships preassembled as a cylindrical chassis, so installation is prep the door to the template, set the chassis with the latch at a 2-3/4 inch backset, mount the roses and levers, then install the strike and check that the guardbolt depresses fully against the stop when the door closes. If it does not, the latch is not deadlocking and the strike alignment needs adjusting.
19) Can I substitute a knob lock for the Accentra 6404LN entry lever?
Only where lever operation is not required - levers are what ADA-driven specs call for on most commercial openings, and the 6404LN is a lever design. If a knob is acceptable, the Arrow HK11-BB is a turn-pushbutton entrance cylindrical lock with a ball knob and conventional cylinder for 1-3/8 inch to 1-3/4 inch doors. Its entrance function matches the 6404LN's, but the turn-pushbutton locking method differs from a keyed single cylinder entrance lever, and the door thickness range is narrower at the top end than the 6404LN's fixed 1-3/4 inch.
20) The Accentra 6404LN only comes in 626 satin chrome - what entry lever gives me a different finish?
If the opening needs a brass or nickel appearance, the Bravura Miramar with round trim is offered in US4 satin brass and the Callan Asheville comes in satin nickel, though both of those are passage function rather than keyed. For a keyed entrance lever in another look, the Deltana Claremont, Manchester, Morant and Linstead levers are all entry function, with the Manchester, Morant and Linstead fitting 1-3/8 inch to 2 inch doors. The 6404LN's 626 satin chrome is a commercial standard finish, so matching existing commercial hardware usually argues for staying with it.
How fast can I get the Accentra YAL-MO-6404LN-626 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 Accentra YAL-MO-6404LN-626 come with a warranty?
Absolutely. The Accentra YAL-MO-6404LN-626 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 Accentra YAL-MO-6404LN-626?
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