Accentra 6404LN Augusta Heavy ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,676.00
$1,300.92
Yale Commercial Yale 6404LN Augusta Heavy Duty Entry Lever Lock YAL-AU6404LN

Accentra 6404LN Augusta Heavy Duty Entry Lever Lock with 2-3/4" Backset

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Model: YAL-AU-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 Augusta Heavy Duty Entry Lever Lock with 2-3/4" Backset

Professional Grade Cylindrical Lever Lock Solution

The Accentra 6404LN Augusta 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 robust 2-3/4" backset design with 1/2" stainless steel latchbolt throw and heavy-gauge steel mechanism for demanding commercial applications. Designed for 1-3/4" door thickness with ADA compliant operation and 7-year mechanical warranty coverage.

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. UL-cUL fire-rated up to 1-1/2 hours with 7-year mechanical warranty coverage. Engineered for demanding commercial applications where dependable performance and code compliance 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-AU-6404LN-626 – Frequently Asked Questions

1) Will the Accentra 6404LN Augusta entry lever fit a 1-3/8 inch door?
No. The 6404LN Augusta is built for 1-3/4 inch doors only, with no adjustment range. If you're working older 1-3/8 inch interior doors, look at something with a range instead, like the Hager 2525 Grade 2 entry lever (1-3/8 to 2 inch) or the Cal-Royal AG00 entrance lever (1-3/8 to 1-3/4 inch).
2) Does the 6404LN use a 2-3/8 or 2-3/4 inch backset?
2-3/4 inch backset, which is the standard commercial bore on a 1-3/4 inch door. If your existing prep is bored at 2-3/8 inches, this lock won't drop in without redoing the cross bore. Cal-Royal's AG00 entrance lever is a 2-3/8 inch backset option.
3) Do I have to specify handing when I order the Augusta 6404LN lever lock?
Yes. Handing has to be specified on every function and design in the line, so you need to know whether the opening is left or right hand before ordering. The strike is the one reversible part: the 1-1/4 inch lip ANSI strike supplied works either way. If you want a non-handed lever to keep stocking simple, the Falcon K101 Grade 1 passage lock uses non-handed levers, though that's a passage function, not keyed entry.
4) Will the 6404LN latch into the strike already in my frame?
It ships with a 1-1/4 inch lip ANSI strike and a 1/2 inch stainless steel latchbolt throw. If your frame is already prepped for an ANSI strike, it lines up. Deeper or shallower lip lengths (for wide trim or a rabbeted jamb) are available to order, and all the strikes are reversible.
5) Can the Accentra 6404LN go on a fire rated door?
Yes, it's UL-cUL fire rated up to 1-1/2 hours, so it suits corridor and stairwell openings in commercial and institutional buildings. Entrance function with a guardbolt that deadlocks the latchbolt whenever the door is closed, which is what a rated opening needs to resist loiding.
6) What cylinder and keying comes with the 6404LN, and can I key it into my building's system?
Standard build is a brass 6-pin cylinder, keyed random, with two keys furnished. A 7-pin cylinder is available to order if your facility's masterkey system runs 7-pin. Keyed random means each lock has its own unique key out of the box, so if you're standardizing a building you'll want to specify your keying requirement rather than take the stock configuration.
7) Is the Augusta 6404LN lever ADA compliant for a healthcare or school corridor?
The lever operation is ADA compliant, and lever trim is what codes call for in place of a knob on accessible routes. It carries ANSI/BHMA Grade 1 certification, which is the heaviest cylindrical duty rating and the usual spec for schools, hospitals and high traffic corridors.
8) What is the closest Grade 1 entrance lever lock to the Accentra 6404LN Augusta if I need a different lever design?
The Accentra 6404LN Augusta is a Grade 1 cylindrical entrance lever with the Augusta lever design. For a Grade 1 cylindrical lever in a different design family, the Falcon T101 T Series is a Grade 1 heavy duty cylindrical lever lock, and the Corbin Russwin CL3100 Series is a Grade 1 cylindrical lever line as well. Both of those specific items are passage function rather than entrance, so if the opening needs a keyed entrance function you would stay with the keyed 6404LN or specify a keyed function within those families.
9) Is there a lighter duty entrance lever lock than the Accentra 6404LN Augusta for a lower traffic opening?
Yes. The Accentra 6404LN Augusta is Grade 1. If the opening does not call for Grade 1, the Hager 2525 is a Grade 2 commercial cylindrical entry lever lock for doors 1-3/8 inch to 2 inch thick, and the Falcon B511CP6D is a Grade 2 medium duty cylindrical lever with entry/office function. The Cal-Royal AG00 is a Grade 2 entrance lever with a 6-pin Schlage C keyway and a 2-3/8 inch backset, so confirm the door bore before substituting it for the 2-3/4 inch backset 6404LN.
10) The Accentra 6404LN Augusta only fits 1-3/4 inch doors. What Grade 1 cylindrical lever covers a wider door thickness range?
The Accentra 6404LN Augusta is built for 1-3/4 inch door thickness only. For thicker or thinner doors, the Falcon K101 is a Grade 1 heavy duty fire-rated cylindrical lever that covers 1-3/8 inch to 2-1/4 inch, the Corbin Russwin CL3110 Grade 1 covers 1-3/4 inch to 2 inch, and the Dexter C1000 Grade 1 classroom lever covers 1-3/8 inch to 1-3/4 inch. Note that the K101 and CL3110 items are passage function, so they do not key.
11) I need a storeroom or classroom function instead of entrance on the same type of door. What should I order?
The Accentra 6404LN Augusta is an entrance function lock, so the outside lever is unlocked by key or by the inside button. For storeroom function, where the outside lever is always locked and key retracts the latch, the Hager 2580 is a Grade 2 storeroom cylindrical lever and the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt. For classroom function, the Dexter C1000 is a Grade 1 keyed classroom cylindrical lever and the Cal-Royal AG03 is a Grade 2 classroom lever with a 2-3/4 inch backset matching the 6404LN.
12) Are residential entry levers like the Kwikset or Baldwin units an equivalent to the Accentra 6404LN Augusta?
No. The Accentra 6404LN Augusta is a commercial Grade 1 cylindrical lever with a 2-3/4 inch backset and UL-cUL fire rating up to 1-1/2 hours. The Kwikset 200BRNL Breton is a Grade 3 passage lever for 1-3/8 to 1-3/4 inch doors, the Master Lock RL Series keyed entry lever is Grade 3, and the Baldwin Estate 5103 is offered in passage, privacy, and dummy functions. Those are residential-grade or decorative products and will not meet a Grade 1 commercial or fire-door specification.
13) If the opening needs to release on a fire alarm or tie into access control, what replaces the Accentra 6404LN Augusta?
The Accentra 6404LN Augusta is a mechanical key-operated entrance lever with no electrical provision. For an electrified cylindrical lever on a comparable heavy commercial opening, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever running 12VAC/DC for 1-3/4 inch to 2 inch doors, which suits the same 1-3/4 inch doors the 6404LN is built for. The Delaney LP250 is a Grade 2 electronic keypad leverlock if standalone code entry is the goal rather than a wired tie-in.
14) What does the entrance function do on the 6404LN Augusta lever, and is it the right one for an office door?
Entrance function, single cylinder and keyed. The outside lever is locked or unlocked by key or by the inside control, the inside lever always retracts the latch for free egress. That's the usual pick for a tenant suite or office door where staff want to secure it themselves. For a door that must stay locked outside and never be left unlocked, a storeroom function is the better call, such as the Cal-Royal AG05 Grade 2 storeroom lever.
15) What finish does the 6404LN Augusta come in, and will it match my other commercial door hardware?
626 satin chrome only, no other finish is offered on the 6404LN. 626 is the default commercial finish on most exit devices, closers and locks, so it usually matches an existing commercial opening. If you need brass, bronze or black to match a decorative suite, this isn't the line to standardize on.
16) Can I get the 6404LN with lead shielding for an X-ray room?
Yes, lead shielding is available to order on the 6404LN. That matters for imaging suites and radiology rooms where the lock body would otherwise be a gap in the shielded wall assembly. It has to be specified with the order, it isn't part of the standard build.
17) How does the Accentra 6404LN compare to a Grade 2 entry lever like the Hager 2525?
Different duty classes. The 6404LN is Grade 1 with a heavy gauge steel, zinc plated and dichromated mechanism, fixed to 1-3/4 inch doors on a 2-3/4 inch backset. The Hager 2525 is a Grade 2 commercial entry lever that covers 1-3/8 to 2 inch doors. Grade 2 is fine for light commercial and multi-family interiors, Grade 1 is what you put on a door that gets cycled hundreds of times a day. Other Grade 1 cylindrical options include the Corbin Russwin CL3100 Series and the Dexter C1000 Series.
18) Can I use a passage lever in place of the Accentra 6404LN Augusta to save on the keyed cylinder?
Only if the opening truly does not need to lock. The Accentra 6404LN Augusta is a keyed single cylinder entrance lock. Passage levers have no cylinder and no locking at all: the Falcon T101 and Falcon K101 are Grade 1 heavy duty passage levers, the Design Hardware X75 is a Grade 1 passage lever for 1-3/4 inch doors, and the Corbin Russwin CL3110 is a Grade 1 passage lever. If the door is a tenant, office, or exterior entry that must secure, none of these substitute for the keyed 6404LN.
19) What looks like a substitute for the Accentra 6404LN Augusta but will not work on a keyed commercial opening?
Watch for three categories. Dummy trim such as the BEST 9K Series 1DT or the BEST 7KC Series 1DT has no latch and no cylinder at all - it is surface trim only. Keypad levers such as the Lockey 2835 and Lockey 1150 are mechanical keyless sets for 1-3/16 inch to 2 inch and 1-1/8 inch to 2 inch doors and do not accept a brass 6-pin cylinder the way the 6404LN does. And exit device trim such as the Corbin Russwin 585F715 lever is trim for an ED8000 pushpad device, not a standalone bored lockset.
20) The Accentra 6404LN Augusta is handed. What Grade 1 cylindrical lever is non-handed if I do not want to specify hand?
Handing must be specified for the Accentra 6404LN Augusta in all functions and designs. If you want to avoid a handing decision on a non-keyed opening, the Falcon K101 is a Grade 1 passage cylindrical lock with a non-handed lever design, and the Falcon B101 is a Grade 2 non-handed passage lever. Both are passage function only, so a keyed entrance opening still requires the handed 6404LN with the hand called out on the order.
21) I need matching privacy and dummy levers to go with the Accentra 6404LN Augusta entrance locks on the same floor. What functions exist in comparable lines?
The Accentra 6404LN Augusta covers the keyed entrance openings. For the bath and bedroom doors, the Hager 2540 and the Arrow MK02-TA cover privacy function, with the MK02-TA being fire rated. For closet and hall doors, the Design Hardware X75 is a Grade 1 passage lever for 1-3/4 inch doors, matching the 6404LN door thickness. For inactive leaves, the BEST 9K Series 1DT is Grade 1 single dummy trim. Lever designs will not match the Augusta across brands, so plan the aesthetic before mixing lines.
22) For a behavioral health or utility room where the lever must not trap anyone, is the Accentra 6404LN Augusta the right lock?
The Accentra 6404LN Augusta is an entrance function lever intended for commercial office, retail, educational, and multi-tenant openings. For asylum or institutional utility function, where both sides are keyed and there is no free egress by lever, the Dexter C1000 Series F87 is a Grade 1 asylum cylindrical lock for 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a Grade 2 heavy duty asylum lock with a Schlage C keyway. Verify the egress requirement for the room before specifying either.
23) Can I swap a knob lockset in for the Accentra 6404LN Augusta on an ADA opening?
No. The Accentra 6404LN Augusta uses a lever handle with ADA compliant operation, which is what accessible openings require. Knob locksets in the comparable range include the Arrow HK11 turn-pushbutton entrance ball knob and the Arrow MK02-TA Tudor knob privacy lock - both are knob trim and would not satisfy an accessible-route requirement, even where the function matches.
24) I need a matching passage or dummy lever to go with the 6404LN on the same suite of doors. What pairs with it?
The 6404LN itself is the keyed entrance function with the Augusta lever design. For non-keyed openings on the same corridor you'd be looking at other functions in the 6400 Series with the same Augusta lever so the trim matches. If you're mixing brands on non-critical doors, the BEST 9K Series 1DT single dummy is a Grade 1 non-keyed lever trim, though the lever shape won't match Augusta.
25) Is the 6404LN shipped assembled or do I have to build it up on site?
It comes preassembled as a cylindrical lockset, so the installer is drilling to template, dropping it into the cross bore and setting the latch and strike rather than piecing a chassis together. Standard cylindrical bored prep on a 1-3/4 inch door with a 2-3/4 inch backset.
How fast can I get the Accentra YAL-AU-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-AU-6404LN-626 come with a warranty?
Absolutely. The Accentra YAL-AU-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-AU-6404LN-626?
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