Hager 3540 Apollo Privacy Cyli...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$80.92
$55.90
Hager 3540 Apollo Privacy Cylindrical Knob Lock with 2-3/4" Backset in Satin Stainless Steel

Hager 3540 Apollo Privacy Cylindrical Knob Lock with 2-3/4" Backset in Satin Stainless Steel

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Model: 3540-32D-APL
$80.92
$55.90
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$80.92
$55.90
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Hager 3540 Apollo Privacy Cylindrical Knob Lock with 2-3/4" Backset in Satin Stainless Steel

Grade 2 Commercial Privacy Lock Solution

The Hager 3540 Apollo Privacy Cylindrical Knob Lock delivers reliable commercial-grade security with BHMA Grade 2 certification and UL/cUL listing for up to 3-hour fire rating applications. Featuring a standard 2-3/4" backset and accommodating door thickness from 1-3/8" to 1-3/4", this privacy function lock operates with a latchbolt controlled by knob from either side with push-button locking from inside. The wrought brass and stainless steel construction with satin stainless steel finish provides durability for standard duty commercial applications.

Professional Features & Benefits

  • Standard Backset Configuration: 2-3/4" (70mm) standard backset with optional 2-3/8" (60mm) configuration for versatile door compatibility.
  • Door Thickness Compatibility: Accommodates door thickness from 1-3/8" to 1-3/4" (35mm - 45mm) for standard commercial door applications.
  • Heavy-Duty Construction: Wrought brass and stainless steel components provide exceptional durability for commercial applications.
  • Independent Torsion Springs: Inside and outside rose liners contain high-strength torsion springs allowing bi-directional lever movement without lever sag.
  • ADA Compliant Design: Non-handed lever designs are ADA compliant and easily field reversible for installation flexibility.
  • BHMA Grade 2 Certification: Meets BHMA Certified ANSI A156.2, Series 4000, Grade 2 standards for commercial reliability.
  • Fire Rating Compliance: UL/cUL Listed for all functions up to 3 hours for "A" label single doors with UL10C Positive Pressure Rating.
  • Privacy Function Operation: Push-button locking with emergency release outside, inside knob operation, or door closing unlock capability.
  • Latchbolt operated by lever from either side. Outside lever is locked by push button and unlocked by emergency release outside, operating inside lever or closing door.

Technical Specifications

  • ANSI/BHMA: F76
  • Applications: Standard Duty Commercial;
  • Backsets: 2-3/4" (70 mm) standard;
  • Certifications: Meets BHMA Certified ANSI A156.2, Series 4000, Grade 2
  • Commercial/Residential: Commercial
  • Door Strike: 1-1/4" x 4-7/8" ASA Strike
  • Door Thickness: 1-3/8" - 1-3/4" (35mm - 45mm)
  • Exposed Trim: Wrought Brass or Stainless Steel
  • Finishes: US3 and US32D
  • Function: Privacy/Bed/Bath
  • Functions: Privacy (F76A);
  • Grade: Grade 2
  • Handle Type: Knob
  • Lever Options: Withnell;
  • Lock Type: 1/2" (13 mm) throw, stainless steel;
  • Options: Additional latchbolts and strikes available.
  • Standard Door Prep: Standard door prep - 2-1/8" (54 mm) diameter (cross bore)
  • Subcategory: Cylindrical Knob Locks

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 Hager Quality?

Hager 3540 cylindrical locks deliver professional-grade reliability with wrought brass and stainless steel construction meeting BHMA Grade 2 certification standards. UL/cUL listed for up to 3-hour fire rating applications with UL10C Positive Pressure Rating for demanding commercial environments. Engineered for standard duty commercial applications where dependable privacy function performance is essential.

Product Specs

Grade:
Grade 2
ANSI/BHMA:
F76
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Subcategory:
Cylindrical Knob Locks
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Knob
Lock Function:
Privacy/Bed/Bath
Product Attribute:
Cylindrical Knob Locks
Product Model:
3540
Product Function:
Privacy/Bed/Bath
Door Thickness Range:
1-3/8" to 2"
Door Strike:
1-1/4" x 4-7/8" ASA Strike
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Hager 3540-32D-APL – Frequently Asked Questions

1) Will the Hager 3540 Apollo knob lock fit a standard 1-3/4 inch commercial door?
Yes. The Hager 3540 Apollo cylindrical knob lock covers a door thickness range of 1-3/8 inch up to 2 inches, so the standard 1-3/4 inch commercial door is right in the middle of that range. Door prep is the usual 2-1/8 inch cross bore with a 2-3/4 inch backset.
2) My doors are bored for a 2-3/8 inch backset. Can I still use the Hager 3540?
The 3540 ships standard with a 2-3/4 inch backset, and Hager lists an optional 2-3/8 inch (60 mm) configuration for the series. If your existing cross bore sits 2-3/8 inches off the door edge, you have to order the 2-3/8 backset version, not the standard one. Pushing a 2-3/4 backset chassis into a 2-3/8 prep will not line up.
3) Will the Hager 3540 latch into the strike I already have in the frame?
The 3540 comes with a 1-1/4 inch x 4-7/8 inch ASA strike, which is the standard commercial frame prep. The latchbolt is stainless steel with a 1/2 inch throw. If your frame is already cut for an ASA (T-strike) opening, it drops in. Frames with a small residential-style faceplate strike will need the ASA cutout or a different strike; Hager lists additional latchbolts and strikes as options.
4) Can I use the Hager 3540 on a fire rated door?
Yes. Hager lists the 3540 as UL/cUL Listed for all functions up to 3 hours on "A" label single doors, with a UL10C positive pressure rating. That covers most stairwell, corridor, and tenant separation openings where a labeled door is required.
5) How does the privacy function on the Hager 3540 actually work in a restroom or patient room?
Privacy function (ANSI F76). The latchbolt works from the knob on either side. Pushing the button on the inside knob locks the outside knob. It releases three ways: the emergency release on the outside, turning the inside knob, or simply closing the door. That last behavior matters in healthcare and multi-family, where a door left locked from outside creates a callback.
6) What functions does the Hager 3540 Apollo come in besides privacy?
The Apollo trim in 630 satin stainless is offered in five functions: passage, privacy, entry, classroom, and storeroom. That lets you keep one trim design across a whole building and change only the function per opening, which is usually what a property manager or spec writer wants.
7) Is a knob lock acceptable, or do I need levers for ADA?
The Apollo is a knob trim, and knobs require tight grasping and twisting, so lever trim is the usual choice where an accessible operable part is required. Hager notes its non-handed lever designs are ADA compliant and field reversible, and the 3540 chassis is offered with lever options such as the Withnell design. If the opening is on an accessible route, order the lever rather than the knob.
8) Which locks look like substitutes for the Hager 3540 Apollo privacy but will not actually lock the door?
Dummy and passage trims are the common mistake. The BEST 7KC 1DT and BEST 9K 1DT are single dummy trims with no latch at all, and the Baldwin Estate 5103 half dummy levers are the same idea. Passage sets such as the Accentra 5301LN Augusta, the Falcon B101 and the Design Hardware J75 have a working latch but no locking. The Hager 3540 Apollo in privacy function has push-button locking from inside with an emergency release outside, which none of those provide.
9) Is the Hager 3540 Apollo rated heavy enough for a school or hospital corridor?
It is a Grade 2 lock, certified to ANSI/BHMA A156.2 Series 4000, and Hager positions it for standard duty commercial use. That suits offices, retail, multi-tenant residential, and classroom or patient-room doors with normal traffic. For a high-cycle opening, step up to a Grade 1 cylindrical such as the Falcon K101 or the Corbin Russwin CL3100 Series, both listed Grade 1 heavy duty.
10) Does the Hager 3540 need to be handed when I order it?
No handing to specify. Hager builds these non-handed and field reversible, so the same lock works on a left or right hand door. One part number covers the whole floor, which cuts down on wrong-hand returns.
11) What is a comparable Grade 2 privacy lock if I want a different brand or a different knob style?
For a like-for-like Grade 2 commercial privacy knob, the Arrow MK02-TA is a privacy/bed/bath cylindrical with a Tudor knob and a fire rating, covering 1-3/4 inch to 2 inch doors, so it will not go on a 1-3/8 inch door the way the Hager 3540 will. If the opening is residential grade rather than commercial, the Kwikset 300BRNL Breton is a Grade 3 privacy lever for 1-3/8 to 1-3/4 inch doors, and the Baldwin Estate 5103 privacy lever is the decorative option.
12) The Hager 3540 Apollo is Grade 2 - what is the Grade 1 step up for a high-traffic opening?
For non-keyed openings in Grade 1 there are heavy duty cylindrical options such as the Falcon K101, a Grade 1 passage cylindrical lock with non-handed levers, fire rated, covering 1-3/8 inch to 2-1/4 inch doors, and the Falcon T101, a Grade 1 heavy-duty passage lever. Both are lever trim and passage function, so they hold the latch but do not provide the push-button privacy locking the Hager 3540 Apollo has. The Hager 3540 is Grade 2 and covers 1-3/8 inch to 2 inch doors.
13) The door is 2 inches thick - will the Hager 3540 Apollo work or do I need something else?
The Hager 3540 Apollo covers 1-3/8 inch to 2 inch doors, so a 2 inch door is at the top of its range and within it. If you want a lock built specifically around thicker doors, the Arrow GL01 passage cylindrical lock is listed for 1-3/4 inch to 2 inch, and the Corbin Russwin CL3110 vandal resistant Grade 1 passage lock covers 1-3/4 inch to 2 inch as well. Both of those are passage function with lever trim rather than the knob privacy function the Hager 3540 provides.
14) I need keyed functions on other doors of the same project - what pairs with the Hager 3540 Apollo?
The Hager 3540 Apollo is offered in passage, privacy, entry, classroom and storeroom functions in 630 satin stainless steel with Apollo trim, so a single series can cover most of a corridor. If you are filling in keyed openings from another line, the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt for 1-3/8 inch to 1-3/4 inch doors, the Cal-Royal AG03 is a classroom lever with a 2-3/4 inch backset, and the Dexter C1000 classroom is a Grade 1 keyed clutching lever. Those are lever trim, where the Hager 3540 Apollo is a knob.
15) Is there a keyless pushbutton alternative to the Hager 3540 Apollo for a restroom that gets controlled access?
For mechanical keyless operation, the Lockey 2835 pushbutton keyless lever lock is ADA compliant with passage function and fits 1-3/16 inch to 2 inch doors, and the Lockey 1150 heavy duty keypad lever set with double combination fits 1-1/8 inch to 2 inch. Those use a code to release the lever. The Hager 3540 Apollo works differently: it is a mechanical privacy knob, locked by push button from inside and released from outside by emergency release, by turning the inside knob, or by closing the door.
16) What is the difference between the Hager 3540 Apollo and an asylum function lock for a behavioral health room?
Asylum function is a different animal. The Arrow MK33-BD-CS is a Grade 2 heavy duty asylum/institution/utility ball knob lock with a conventional cylinder in Schlage C keyway, and the Dexter C1000 asylum is a Grade 1 F87 asylum lock for 1-3/8 inch to 2 inch doors. Those are keyed from both sides for staff control. The Hager 3540 Apollo is a privacy/bed/bath knob with push-button locking and no key cylinder in that function, intended for restrooms and bedrooms rather than controlled patient rooms.
17) For an apartment unit interior where budget matters more than commercial grade, what can I use instead of the Hager 3540 Apollo?
Grade 3 residential-level leversets cover those doors. The Kwikset 200BRNL RDT Breton is a Grade 3 passage lever for 1-3/8 inch to 1-3/4 inch doors and the Kwikset 300BRNL RDT Breton is the matching Grade 3 privacy lever in the same thickness range; Callan Asheville is a Grade 3 passage leverset in satin nickel. The Hager 3540 Apollo is specified as commercial and Grade 2, so for corridors, common-area restrooms and higher-cycle doors it is the one that carries the commercial rating.
18) If the opening needs a keyed entrance knob instead of privacy, what matches the Hager 3540 Apollo family?
The Apollo trim is offered in an entry function in 630 satin stainless steel, which keeps the trim consistent with the privacy knobs on adjacent doors. From another line, 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, and the Falcon B511CP6D is a Grade 2 medium duty cylindrical lever with entry/office function. The Hager 3540 uses a 2-3/4 inch backset and a 1-1/4 inch by 4-7/8 inch ASA strike, so verify the replacement matches your existing frame prep.
19) What is the Hager 3540 made of, and will the finish hold up in a public restroom?
Exposed trim is wrought brass or stainless steel, and the 630 satin stainless steel finish is the standard commercial choice for wet and high-traffic areas because it does not lacquer-peel the way a plated brass finish can. Hager also catalogs the 3540 in US3 (bright brass) if you are matching existing brass hardware.
How fast can I get the Hager 3540-32D-APL 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 Hager 3540-32D-APL come with a warranty?
Absolutely. The Hager 3540-32D-APL 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 Hager 3540-32D-APL?
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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