Accentra 5421LN Augusta Heavy ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,031.75
$600.31
Yale Commercial Yale 5421LN Augusta Heavy Duty Grade 1 Communicating Cylindrical Lever Lock YAL-AU-5421LN

Accentra 5421LN Augusta Heavy Duty Grade 1 Communicating Cylindrical Lever Lock

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Model: AU-5421LN-626
From the 5400 Series Collection
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,031.75
$600.31
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Accentra 5421LN Augusta Heavy Duty Grade 1 Communicating Cylindrical Lever Lock

Professional Grade 1 Cylindrical Lockset for Commercial Applications

The Accentra 5421LN Augusta lever lock delivers heavy-duty Grade 1 performance for demanding commercial and industrial applications. This communicating cylindrical lockset features a 2-3/4" standard backset with adjustable door thickness from 1-3/4" to 2-1/4", accommodating a wide range of door configurations. Built with heavy-gauge steel mechanism and 1/2" stainless steel latchbolt throw, this ANSI/BHMA Grade 1 certified lockset provides reliable access control with UL/cUL fire rating up to 3 hours.

Professional Features & Benefits

  • ANSI/BHMA: A156.2, Series 4000 Grade 1
  • UL/cUL: UL/cUL fire-rated up to 3 hours
  • Windstorm: Certified (refer to local codes)
  • Mechanism: Heavy-gauge steel, zinc-plated, dichromated
  • Backset: 2-3/4" standard; 3-3/4" or 5" extension link available to order
  • Latchbolt: 1/2" stainless steel throw standard; 3/4" throw available to order
  • Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
  • Door Thickness: Adjustable from 1-3/4" to 2-1/4"
  • Fronts: 2-1/4" x 1-1/8" beveled standard; flat fronts available to order
  • Lead Shielding: Available to order
  • Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin available to order. For other cylinder and keying options, see page 31.
  • Reversibility: Non-handed
  • Strikes: 1-1/4" curved lip for 1-3/4" door standard; other lip lengths available to order; all reversible
  • Finishes: Available in 13 finishes, including PVD lifetime finish options for 613. PVD is standard for 605 and 606
  • Warranty: 7-year mechanical

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness from 1-3/4" to 2-1/4", backset requirements, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 2-1/4" x 1-1/8" beveled front.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for cylindrical lockset installation.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, ensuring proper alignment of the heavy-gauge steel mechanism.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion, verifying guardbolt deadlocking function.
  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
  • Industrial and Manufacturing Facilities
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail Establishments

Why Choose Accentra Quality?

Accentra cylindrical lever locks deliver professional-grade reliability with heavy-gauge steel construction and Grade 1 certification for demanding commercial applications. The 7-year mechanical warranty and UL/cUL fire rating up to 3 hours demonstrate the quality and performance standards built into every lockset. Engineered for industrial and commercial use where dependable access control and long-term durability are essential.

Product Specs

Series:
5400 Series
Subcategory:
Lever Locksets
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Lever
Lock Function:
Communicating
Product Attribute:
Cylindrical Locks
Product Model:
YAL-5421LN
Collection:
5400 Series
Product Function:
Communicating
Lever Design Name:
Augusta Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Accentra AU-5421LN-626 – Frequently Asked Questions

1) What does the communicating function on the Accentra 5421LN Augusta lever lock actually do?
A communicating lock puts a key cylinder on both sides of the door, so either side can be locked or unlocked by key only. The 5421LN Augusta is the communicating function in Accentra's 5400 Series cylindrical line, used between two occupied spaces such as adjoining hotel rooms, connected offices, or paired patient rooms where both parties need key control. If you want a keyed outside lever with a free inside lever instead, that is an entrance or storeroom function, not this one.
2) Will the Accentra 5421LN fit a 2 inch thick door?
Yes. The 5421LN adjusts from 1-3/4 inches up to 2-1/4 inches door thickness, so a 2 inch door is inside the standard range with no special order. Note the bottom of that range: at 1-3/8 inches, the common older interior door thickness, this lock is out of range.
3) What backset does the Accentra 5421LN come with, and can I get it for a wider stile?
Standard backset is 2-3/4 inches, which is the usual commercial bore. For deeper door prep, a 3-3/4 inch or 5 inch extension link is available to order. There is no 2-3/8 inch residential backset option on this lock, so if your existing bore is at 2-3/8 inches the 5421LN will not drop in.
4) Will the 5421LN latch into the strike already in my frame?
Standard latchbolt throw is 1/2 inch stainless steel, with a 3/4 inch throw available to order if your frame has a deeper gap or you need more engagement. The lock ships with a 1-1/4 inch curved lip strike sized for a 1-3/4 inch door; other lip lengths are available to order, and all strikes are reversible. If your existing strike is an ANSI-style box strike at a different lip length, order the matching lip rather than forcing the standard one.
5) Is the Accentra 5421LN fire rated for a 3 hour opening?
Yes. The 5421LN carries a UL/cUL fire rating up to 3 hours and is ANSI/BHMA A156.2 Series 4000 Grade 1. It is also windstorm certified, though you should confirm against your local code for that application. The guardbolt deadlocks the latchbolt when the door is closed, which is standard on all locking functions in the series.
6) What cylinder and keying comes with the Accentra 5421LN, and can it go on my master key system?
Standard is a brass 6-pin keyed-random cylinder with two keys furnished. A 7-pin cylinder is available to order, which is what you would typically specify to tie into an existing masterkeyed system. Because it is a communicating function, there is a cylinder on both faces of the door, so keying needs to be specified for both sides.
7) What is the closest Grade 1 heavy duty cylindrical lever alternative to the Accentra 5421LN Augusta?
The Accentra 5421LN Augusta is an ANSI/BHMA Grade 1 cylindrical lever lock with a 2-3/4 inch standard backset and adjustable door thickness from 1-3/4 to 2-1/4 inches. If you need a Grade 1 heavy duty cylindrical lever from another maker, the Falcon K101 in the K Series is Grade 1, heavy duty, fire rated, and covers 1-3/8 to 2-1/4 inch doors, and the Falcon T101 in the T Series is also Grade 1 heavy duty. Both of those are passage function rather than communicating, so they latch without any locking, while the 5421LN is a communicating lock.
8) The 5421LN is a communicating function. What should I order for a classroom or storeroom door instead?
The Accentra 5421LN Augusta is a communicating function lock, which is not what a classroom or storeroom opening calls for. For classroom use, the Dexter C1000 Series classroom lever is Grade 1 with a clutching keyed lever for 1-3/8 to 1-3/4 inch doors, and the Dexter C1000 classroom security version adds inside keyed control at the same grade. For storeroom function, the Hager 2580 with the Withnell lever and the Cal-Royal AG05 with a deadlocking latchbolt are both Grade 2.
9) Can I use a Baldwin Estate 5103 or Emtek lever in place of the Accentra 5421LN Augusta?
Those are different classes of product. The Accentra 5421LN Augusta is a Grade 1 commercial cylindrical lever lock in a communicating function. The Baldwin Estate 5103 is offered in passage, privacy, and left or right hand half dummy versions on the 5048 rose, and the Emtek Arts and Crafts and Cortina leversets are sold as dummy pairs. Dummy trim has no latch at all, and passage and privacy trim do not provide keyed control, so none of them replaces a communicating lock on a commercial opening.
10) My door is thicker than most residential grade levers allow. Which options besides the Accentra 5421LN cover it?
The Accentra 5421LN Augusta is adjustable from 1-3/4 to 2-1/4 inches of door thickness. The Falcon K101 Grade 1 passage lock covers 1-3/8 to 2-1/4 inches. Stepping down slightly, the Corbin Russwin CL3110 and the CL33903 electrified lever cover 1-3/4 to 2 inches. By contrast the Kwikset 200BRNL Breton and 300BRNL Breton are rated 1-3/8 to 1-3/4 inches, and the Cal-Royal AUS00 is 1-3/8 to 1-3/4 inches, so they stop short of a 2-1/4 inch door.
11) What do I use instead of the Accentra 5421LN if the opening needs access control or keyless entry?
The Accentra 5421LN Augusta is a mechanical keyed cylindrical lever with a brass 6-pin cylinder and no electrification. For an electrified opening, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever running on 12VAC/DC for 1-3/4 to 2 inch doors. For keyless mechanical entry, the Lockey 2835 pushbutton lever covers 1-3/16 to 2 inch doors and the Lockey 1150 heavy duty keypad lever set covers 1-1/8 to 2 inch doors with an adjustable backset. The Delaney LP250 is an electronic keypad leverlock at Grade 2.
12) Do I need to specify handing when ordering the 5421LN Augusta lever?
No. The 5421LN is non-handed and fully reversible, and the strike is reversible as well, so one part number covers both left and right hand openings. That makes it easier to stock a single spare for a building with mixed swings.
13) What is the front size on the 5421LN and can I get a flat front?
The standard front is 2-1/4 x 1-1/8 inches, beveled. Flat fronts are available to order, which is what you want on a door edge that is not beveled. Lead shielding is also an available option, relevant for radiology and imaging suites.
14) Is the Accentra 5421LN durable enough for a school or hospital corridor?
It is built for that traffic. The mechanism is heavy-gauge steel, zinc-plated and dichromated, rated ANSI/BHMA A156.2 Series 4000 Grade 1, which is the highest commercial durability grade. The Augusta lever is the design, and the lock is catalogued for commercial use across offices, schools, healthcare, industrial plants, government buildings, multi-tenant residential, and retail. Grade 2 and Grade 3 leversets are meant for lighter duty and will wear faster in a main corridor.
15) What Grade 1 lever should I use on the doors that only need to latch, next to the Accentra 5421LN openings?
To keep the same grade across a run of doors where no locking is needed, Grade 1 passage levers include the Corbin Russwin CL3110 passage/closet vandal resistant lock in the CL3100 Series, fire rated for 1-3/4 to 2 inch doors, the Dexter C1000 passage lever with clutching non-keyed levers, the Design Hardware X75 flat lever passage set for 1-3/4 inch doors, and the Falcon K101. The Accentra 5421LN Augusta remains the communicating function part of that group and covers 1-3/4 to 2-1/4 inch doors.
16) Is there a lower cost Grade 2 lever lock I can use instead of the Accentra 5421LN on light traffic doors?
The Accentra 5421LN Augusta is built to Grade 1 for heavy commercial traffic. On lighter interior openings, Grade 2 cylindrical levers include the Hager 2510 passage lock with the Withnell lever for 1-3/8 to 2 inch doors, the Hager 2580 storeroom lock with the Withnell lever, the Cal-Royal AG05 storeroom lever for 1-3/8 to 1-3/4 inch doors, and the Falcon B101 medium duty passage lever. Note the narrower door thickness coverage on those compared with the 1-3/4 to 2-1/4 inch range of the 5421LN.
17) I need matching dummy trim on the inactive leaf of a pair where the Accentra 5421LN is on the active leaf. What works?
The Accentra 5421LN Augusta is a Grade 1 cylindrical lever lock and does not serve as dummy trim. For a non-latching leaf at the same grade, the BEST 9K Series 1DT single dummy trim cylindrical lever is Grade 1 heavy duty and non-keyed. A medium duty option is the BEST 7KC Series 1DT single dummy trim, which is Grade 2. The Callan Bentley is a Grade 2 dummy lever as well.
18) For a patient room or detention type opening, is the Accentra 5421LN the right choice or should I look at an asylum function?
The Accentra 5421LN Augusta is a communicating function lock, which keys both sides but is not an asylum function. Where the spec calls for asylum or institutional function, the Dexter C1000 Series asylum lock (F87) is Grade 1 and covers 1-3/8 to 2 inch doors, and the Arrow MK33-BD-CS is a heavy duty asylum lock with a ball knob and a conventional cylinder in the Schlage C keyway. The 5421LN carries a lever rather than a knob and is non-handed.
19) Would a Bravura or Callan leverset substitute for the Accentra 5421LN Augusta on a commercial job?
Not on the same spec. The Accentra 5421LN Augusta is a Grade 1 commercial cylindrical lever with a communicating function. The Bravura Miramar, Atlanta, Orlando, and Tampa leversets are all Grade 2 passage function, and the Callan Artino and Bennett entrance leversets and the Asheville passage leverset are Grade 3. If the drawing calls out Grade 1 with a keyed function, those do not meet it.
20) I need a keyed entry or office function lever to go with Accentra 5421LN Augusta openings. What are the options?
The Accentra 5421LN Augusta handles the communicating openings. For entry or office function on adjacent doors, the Falcon B511CP6D is a Grade 2 medium duty entry/office cylindrical lever, the Hager 2525 is a Grade 2 commercial entry lever for 1-3/8 to 2 inch doors, and the Cal-Royal AG00 entrance lever comes with a 6-pin Schlage C keyway keyed different and a 2-3/8 inch backset. Watch the backset: the 5421LN is 2-3/4 inch standard, and the Cal-Royal AG03 classroom lever is the 2-3/4 inch backset option in that series.
21) What finishes does the Accentra 5421LN Augusta lever come in?
Nine finish choices are orderable: 605 bright brass, 606 satin brass, 612 satin bronze, 613E dark oxidized satin bronze equivalent, 619 satin nickel, 625 bright chrome, 626 satin chrome, plus BSP black suede powder coat and WSP white suede powder coat. PVD is standard on 605 and 606, which holds up better against handling and cleaning chemicals in high traffic corridors. For matching existing openings in a building, 626 satin chrome is the usual commercial default.
How fast can I get the Accentra AU-5421LN-626 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 Accentra AU-5421LN-626 come with a warranty?
Absolutely. The Accentra AU-5421LN-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 AU-5421LN-626?
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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