Hager 3600 Series 3640 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$155.71
$93.85
Hager 3600 Series 3640 Grade 1 Privacy Cylindrical Lock, Non-Handed, Conventional Cylinder

Hager 3600 Series 3640 Grade 1 Privacy Cylindrical Lock with Adjustable Backset

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Model: 3640 WTN 26D
$155.71
$93.85
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$155.71
$93.85
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Hager 3600 Series 3640 Grade 1 Privacy Cylindrical Lock with Adjustable Backset

Professional Privacy Lock Solution for Commercial Applications

The Hager 3600 Series 3640 Grade 1 Privacy Cylindrical Lock delivers professional-grade security with adjustable 2-3/8" - 2-3/4" backset for versatile installation. Designed for door thickness range of 1-3/8" - 1-3/4", this non-handed lock features wrought brass, bronze, and stainless steel rose construction with zinc-based plated levers. BHMA Certified ANSI A156.2, Series 4000, Grade 2 with UL/cUL listing for 3-hour fire rating applications.

Professional Features & Benefits

  • Adjustable Backset: 2-3/8" - 2-3/4" (60mm - 70mm) backset adjustment accommodates various door preparations and installation requirements.
  • Door Thickness Compatibility: Designed for 1-3/8" - 1-3/4" (35mm - 45mm) door thickness range for versatile commercial and residential applications.
  • Grade 1 Construction: BHMA Certified ANSI A156.2, Series 4000, Grade 2 rating ensures heavy-duty performance for demanding commercial environments.
  • Fire-Rated Performance: UL/cUL Listed for all functions up to 3 hours "A" label single doors with UL10C Positive Pressure Rating for code compliance.
  • Professional Rose Design: 2-15/16" (75mm) diameter rose in wrought brass, bronze, and stainless steel with no exposed mounting screws for clean appearance.
  • Durable Latchbolt: 1/2" (13mm) throw stainless steel latchbolt with 1" x 2-1/4" (25mm x 57mm) faceplate for reliable latching performance.
  • Non-Handed Design: Universal installation eliminates field determination requirements and reduces inventory needs.
  • Manufacturer Warranty: Five-Year warranty coverage for added confidence and protection in commercial applications.

Technical Specifications

  • Applications: Medium Duty Commercial; Heavy Duty Residential
  • Backsets: Adjustable 2-3/8" - 2-3/4" (60mm - 70mm)
  • Certifications: ADA Compliant ANSI A117.1 Accessibility Code; UL/cUL Listed for all functions up to 3 hours "A" label single doors; UL10CPositive Pressure Rated; BHMA Certified ANSI A156.2, Series 4000, Grade 2
  • Commercial/Residential: Commercial
  • Door Strike: ASA Strike
  • Door Thickness: 1-3/8" to 1-3/4"
  • Finishes: US3, US4, US10B, US26, US26D
  • Functions: Single Cylinder
  • Grade: Grade 1
  • Handle Type: Lever
  • Keyed: Yes
  • Lock Type: Cylindrical
  • Notes: No exposed mounting screws; Non-handed
  • Options: Split Finish
  • Strikes: 1-1/4" x 4-7/8" (32 mm x 124 mm) ASA strike; Optional strikes available
  • Subcategory: Cylindrical Locks
  • Warranty: Five-Year

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness 1-3/8" - 1-3/4", backset adjustment 2-3/8" - 2-3/4", and non-handed installation compatibility.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for proper rose and latchbolt positioning.
  3. Prepare door by drilling required holes and routing as specified in manufacturer instructions for cylindrical lock installation.
  4. Install all mounting hardware and secure the lock assembly to door per manufacturer torque specifications with no exposed mounting screws.
  5. Adjust backset setting and operational components for proper alignment, latching, and smooth lever operation throughout the full range of motion.
  6. Test lock operation to verify proper privacy function, latchbolt engagement, 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 3600 Series cylindrical locks deliver professional-grade reliability with wrought brass, bronze, and stainless steel construction rated for Grade 1 performance. Five-Year warranty coverage and BHMA certification ensure dependable operation in demanding commercial applications. Engineered for medium duty commercial and heavy duty residential use where consistent privacy function and fire-rated performance are essential.

Grade 2 cylindrical lock suitable for light commercial and institutional applications.

Product Specs

Warranty:
5 Year
Keyed Function:
Single Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Subcategory:
Cylindrical Locks
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Lever
Grade:
Grade 1
Product Attribute:
Cylindrical Locks
Product Model:
3640
Backset (Distance):
2-3/8 or 2-3/4
Product Function:
Privacy
Door Thickness Range:
1-3/8" to 1-3/4"
Door Strike:
ASA Strike
Product Category:
Mechanical Locks
Department:
Door Hardware

Hager 3640 WTN 26D – Frequently Asked Questions

1) Will the Hager 3640 privacy lever fit a 1-3/8 inch door, or is it only for 1-3/4?
Both. The 3640 privacy cylindrical lock covers a door thickness range of 1-3/8 inch to 1-3/4 inch, so it works on older interior wood doors and on standard commercial 1-3/4 inch leaves without a separate kit.
2) Do I have to know the backset before ordering this Hager privacy lock?
No. The 3640 has an adjustable backset that sets to either 2-3/8 or 2-3/4 inches, which are the two backsets you will find on virtually every bored door prep. One part number covers both, so you can carry a single lock on the truck for retrofit calls where you have not measured the cross bore yet.
3) Can I use this Hager privacy lever on a fire rated door?
Yes. The 3640 is UL/cUL Listed for all functions up to 3 hours on "A" label single doors and carries a UL10C positive pressure rating, so it is acceptable on rated openings in corridors, stairwells and patient or dorm rooms.
4) Will the Hager 3640 latch into the strike already in my frame?
It ships with a 1-1/4 x 4-7/8 inch ASA strike and a 1/2 inch throw stainless latchbolt with a 1 x 2-1/4 inch faceplate. If your frame is already prepped for a standard ASA strike, it drops in. Frames cut for a small T strike or a full lip strike will need the optional strike instead of the supplied one.
5) Is this Hager 3640 a keyed lock or a bathroom privacy lock?
It is a privacy function lock, the push button or turn type used on restrooms, bedrooms and exam rooms. It locks from inside and is not intended as a keyed entry lock for securing a room from the corridor. For a keyed opening you want an entrance or storeroom function instead, such as the Cal-Royal AG05 storeroom lever.
6) I need a privacy lock but the door is 2 inches thick - what should I use instead of the Hager 3640?
The Hager 3640 is prepped for 1-3/8 inch to 1-3/4 inch doors. For a thicker leaf, the Arrow MK02-TA is a privacy/bed/bath cylindrical lock covering a 1-3/4 inch to 2 inch door thickness range and carrying a fire rating. The trade-off is trim style: the Arrow MK02-TA uses a Tudor knob, while the Hager 3640 is a lever, which matters if the opening has to meet ADA operable-hardware expectations.
7) The door does not need to lock - what is the Grade 1 passage version to order instead of the Hager 3640?
Privacy is the wrong function for a door that only needs to latch. The Dexter C1000 is a Grade 1 passage cylindrical lever lock with clutching levers, non-keyed, over a 1-3/8 inch to 1-3/4 inch door range that matches the Hager 3640. The Falcon K101 is another Grade 1 non-handed passage lever, rated heavy duty and fire rated, and it extends the door range to 1-3/8 inch to 2-1/4 inch.
8) Does the Hager 3640 need to be ordered left hand or right hand?
Handing is not a factor. The 3640 is non-handed, so the same lock installs on either swing with no field conversion. For a property manager stocking spares across a building, that means one SKU instead of two.
9) Is the Hager 3640 ADA compliant for a healthcare or school restroom?
The lever trim is ADA compliant to ANSI A117.1, which is what gets it past inspection on accessible restrooms and classroom doors where a knob would not qualify.
10) How does the Hager 3640 compare to a Kwikset 300BRNL privacy lever for an apartment building?
Different duty classes. The Hager 3640 is a commercial cylindrical privacy lock with an adjustable 2-3/8 or 2-3/4 backset and a UL rating to 3 hours. The Kwikset 300BRNL Breton privacy lever is a Grade 3 residential set covering the same 1-3/8 to 1-3/4 inch door thickness. For unit bathrooms in a low traffic building the Kwikset is the lighter option; for corridors, rated doors and common area restrooms, the Hager is the one built for the cycles.
11) I need a passage lever to match these privacy locks on the same job. What pairs with it?
The 3640 is the privacy function only, so closet, hall and utility doors need a separate passage set. Comparable Grade 1 passage levers include the Falcon K101, which covers 1-3/8 to 2 inch doors and is fire rated, the Dexter C1000 passage at 1-3/8 to 1-3/4 inch, and the Corbin Russwin CL3110 for 1-3/4 to 2 inch doors. Trim appearance will not match the Hager Withnell lever, so if visual consistency matters across the openings, source the passage function from the Hager 3600 line.
12) Is the Baldwin Estate 5103 privacy lever a direct replacement for a Hager 3640?
Both are privacy levers, but they are built for different openings. The Baldwin Estate 5103 privacy lever uses the 5048 rose and is a decorative residential trim. The Hager 3640 is a commercial cylindrical privacy lock, Grade 1, with an adjustable 2-3/8 to 2-3/4 inch backset and an ASA strike prep. If the existing door is cut for an ASA strike, the Hager is the part that drops into that prep.
13) For a patient room or utility door, is the Hager 3640 privacy lock the right function?
Privacy function locks from the inside and is meant for restrooms and bedrooms. For a room where staff must control access from the corridor, the Dexter C1000 asylum function is a Grade 1 cylindrical lock covering 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a heavy duty asylum/institution/utility cylindrical lock with a conventional cylinder in Schlage C keyway. Those are keyed both sides rather than thumbturn privacy.
14) What do I order for the storeroom and classroom doors if I am standardizing the restrooms on the Hager 3640?
Match the trim family and change the function. The Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt over a 1-3/8 inch to 1-3/4 inch door range, the same door range as the Hager 3640, and the Cal-Royal AG03 is the classroom lever in the AG series with a 6-pin Schlage C keyway and a 2-3/4 inch backset. The Dexter C1000 classroom is the Grade 1 option at 1-3/8 inch to 1-3/4 inch.
15) What finishes does the Hager 3640 come in, and can I match two different finishes on one door?
Finish choices are US3, US4, US10B, US26 and US26D, and split finish is available as an option if the corridor side has to match one scheme and the room side another. The rose is 2-15/16 inch diameter with no exposed mounting screws.
16) Can I use a dummy lever in place of the Hager 3640 on the inactive leaf?
No - a dummy has no latch. The Hager 3640 is a cylindrical privacy lock with a working latchbolt. For a fixed or inactive leaf, the BEST 9K Series 1DT is a Grade 1 non-keyed single dummy trim cylindrical lever, and the BEST 7KC Series 1DT is the Grade 2 medium duty dummy. Those surface-mount as pull trim only.
How fast can I get the Hager 3640 WTN 26D 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 3640 WTN 26D come with a warranty?
Absolutely. The Hager 3640 WTN 26D 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 3640 WTN 26D?
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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