Sargent 4875-LC Single Cylinde...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$421.49
$242.86
Sargent 4875-LC Single Cylinder Mortise Deadbolt with 2-3/4" Backset - Less Cylinder

Sargent 4875-LC Single Cylinder Mortise Deadbolt with 2-3/4" Backset - Less Cylinder

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Model: 4875-26D-LC
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$421.49
$242.86
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Sargent 4875 Series Single Cylinder Mortise Deadbolt with 2-3/4" Backset

Professional Mortise Deadbolt Security Solution

The Sargent 4875 Series Single Cylinder Mortise Deadbolt delivers maximum security with laminated stacked steel deadbolt construction and 2-3/4" backset depth for 1-3/4" door thickness applications. Featuring cylinder x thumb turn operation with 1" latchbolt throw, this UL Listed deadbolt is engineered for high-traffic facilities including schools and hospitals where reliable performance is essential.

Professional Features & Benefits

  • Precise Door Compatibility: Designed for 1-3/4" door thickness with 2-3/4" backset depth for standard commercial door applications.
  • Heavy-Duty Construction: Laminated stacked steel deadbolt provides maximum security and durability for demanding commercial environments.
  • Dual Operation Design: Key outside operates deadbolt while thumb turn inside provides convenient interior access control.
  • Extended Throw Protection: 1" latchbolt throw ensures secure engagement with strike plate for enhanced security performance.
  • Non-Handed Installation: Universal design accommodates both left-hand and right-hand door configurations without modification.
  • UL Listed Compliance: UL and ULC Listed certification ensures code compliance and reliable performance standards.
  • Manufacturer Warranty: 1-year limited warranty provides added confidence and protection for commercial installations.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

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 Sargent Quality?

Sargent mortise deadbolt products deliver professional-grade reliability with laminated stacked steel construction and UL Listed certification for demanding commercial applications. The 1-year limited warranty and proven performance in high-traffic facilities like schools and hospitals demonstrate the dependable security performance essential for critical access control applications.

Product Specs

Series:
4870 Series
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Locks and Trim
Commercial/Residential:
Commercial
Lock Function:
Single Cylinder x Turn Lever
Keyed Function:
Less Cylinder
Lock Type:
Deadbolt
Product Model:
4875
Product Function:
Single Cylinder x Turn Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent 4875-26D-LC – Frequently Asked Questions

1) Does the Sargent 4875 deadbolt come with a cylinder?
No. The 4875-LC ships less cylinder, so you supply the mortise cylinder and key it into your existing system. That is the point of the LC version for a locksmith or a property manager standardizing a building on one keyway. Plan on a mortise cylinder plus the thumb turn side, which is part of the single cylinder x turn lever function.
2) Do I have to order the Sargent 4875 handed left or right?
No handing to specify. The 4875 is non-handed and installs in a left-hand or right-hand door without modification, so one part number covers a whole building's worth of openings regardless of swing.
3) Will a 1 inch deadbolt throw reach the strike on a frame with a wide gap?
The 4875 throws a 1 inch laminated stacked steel bolt, which gives you real engagement depth into the strike even where the door-to-frame gap has opened up over time. It ships with the standard 480 strike, 3-1/2 by 1-1/8 inches, so if your frame is prepped for an ANSI strike cutout you will want to confirm the frame prep matches that face size before you cut anything.
4) Can the inside of a Sargent 4875 deadbolt be unlocked without a key in an emergency?
Yes. Key outside, thumb turn inside. Nobody on the secure side needs a key to retract the bolt, which is what most facility egress requirements are after on a back-of-house or storage door. If your application requires a key on both sides, the 4875 single cylinder version is the wrong choice.
5) I need keyed entry and a latch on the same door, not just a deadbolt. What mortise lock should I use instead of the Sargent 4875?
The Sargent 4875 is a deadbolt only, with a 1 inch throw bolt and no latchbolt for everyday door control, so it is normally paired with another device on the door. For a single mortise body that gives both keyed entry and a latch, the Cal-Royal NM8050 is a Grade 1 entrance/office mortise lockset with an auxiliary deadlatch for 1-3/4 inch doors, and the Cal-Royal NM8080 is the Grade 1 storeroom version with an interchangeable core option. The Corbin Russwin ML2003 is the Grade 1 classroom function in the ML2000 Series for 1-3/4 inch doors.
6) Is there a keypad mortise deadbolt alternative to the Sargent 4875 so tenants do not carry keys?
Yes. The Alarm Lock DL4500 Series is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad, for doors 1-5/8 inch to 1-7/8 inch thick. The Sargent 4875 is mechanical: a key outside operates the bolt and a thumb turn operates it inside, with the cylinder supplied separately. The DL4500 is the choice where codes are issued and changed without rekeying; the 4875 is the choice where the opening stays on the building's existing key system.
7) Should I use a mortise deadbolt like the Sargent 4875 or a mortise lockset with a built-in deadbolt?
A 4875 is a deadbolt body only, no lever, no latch. Use it as a standalone auxiliary bolt above an existing lockset or on a door that only needs to be bolted. If you want one body that both latches the door and throws a deadbolt, you want a combination lockset instead, like the Cal-Royal NM8440 Grade 1 privacy mortise lockset with deadbolt. Two separate mortise pockets versus one is the real install decision here.
8) What is a good electronic alternative to a Sargent 4875 mortise deadbolt if I want keypad access?
For keyless on a deadbolt function, the Alarm Lock DL4500 Series is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad, fitting doors 1-5/8 to 1-7/8 inches. Note that thickness range is different from the 4875's 1-3/4 inch build, so the DL4500 covers a wider band of door stock. The 4875 stays mechanical, keyed to whatever cylinder you supply.
9) Is there another mortise deadbolt besides the Sargent 4875 if I need a different lock body?
The Kaba Ilco 185 Series mortise lock is also a deadbolt function and is non-handed, same as the 4875. Between the two, the deciding factor is your cylinder and keyway program, since the 4875-LC is supplied less cylinder and keys into whatever system you already run.
10) Will the Sargent 4875 work on a 1-3/8 inch or a 2 inch door, and what fits if it will not?
The Sargent 4875 is built for 1-3/4 inch door thickness with a 2-3/4 inch backset. For thicker doors, the Hager 3810E and 3810S 3800 Series passage mortise locks carry a 1-3/4 inch to 2-1/2 inch door thickness range with a 2-3/4 inch backset, and the Baldwin 6310 mortise lock body covers 1-3/8 inch and over with a 2-1/2 inch backset. Note the Hager and Baldwin units are latching locksets rather than deadbolts, so they answer a different part of the opening.
11) For a classroom door I need to secure from inside, is a mortise deadbolt like the Sargent 4875 the right part?
The Sargent 4875 gives a key outside and a thumb turn inside on a deadbolt, which secures the room from within but does not control the latch. Classroom-function mortise locksets handle that in one body: the Cal-Royal NM8070 is Grade 1 classroom for 1-3/4 inch doors, the Corbin Russwin ML2003 is the Grade 1 ML2000 Series classroom lockset, and the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with an ANSI strike and a steel escutcheon measuring 8-1/2 inch H x 2-3/4 inch W x 7/16 inch for 1-3/4 inch doors.
12) What is the difference between the Sargent 4875 mortise deadbolt and a mortise lock body like the BEST 45H?
The Sargent 4875 is a mortise deadbolt: bolt only, 1 inch throw, 2-3/4 inch backset, cylinder outside and turn lever inside, non-handed. The BEST 45HCAC is a heavy duty public entrance function mortise lock body with field reversible operation, and the BEST 45HCAINL is a heavy duty lock body with intruder function. Those are latching lock bodies that take lever trim and control the door in daily use, while the 4875 adds a separate throw bolt to the opening.
13) We are moving the building to credentials. What mortise options replace a keyed deadbolt like the Sargent 4875?
Several mortise units take credentials in place of a mechanical key. The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a mobile enabled deadbolt with LED, right hand, with a 3 hour fire rating. The TownSteel FME-2000 Series is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors. The Sargent 4875 remains the mechanical route, taking a cylinder specified to the existing key system.
14) Can I use the Sargent 4875 deadbolt on a high-traffic school or hospital door?
That is exactly the duty it is built for. Laminated stacked steel bolt construction and commercial rating, with schools and hospitals called out as target applications alongside offices, retail, warehouses, multi-tenant residential, and government buildings. For an MRO buyer standardizing across a campus, the non-handed body means one SKU covers every swing.
15) Is the Alarm Lock DL2700CR or DL3500CR a substitute for a Sargent 4875 deadbolt?
They are not deadbolts. The Alarm Lock DL2700CR is a Trilogy T2 electronic mortise lock with classroom function and weatherproof design, and the DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function; both are Grade 1 classroom function for doors 1-5/8 inch to 1-7/8 inch thick. The Sargent 4875 is a mechanical deadbolt for 1-3/4 inch doors. Within the Alarm Lock line, the DL4500 Series is the electronic mortise deadbolt.
16) For a behavioral health or ligature resistant opening, what mortise hardware pairs with or replaces a Sargent 4875?
The TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function for 1-3/4 inch doors, and the MRX-A-01 is the passage function ligature resistant arch trim version in satin stainless steel. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset, ligature resistant and ADA compliant in satin stainless steel. These are passage devices; the Sargent 4875 is the keyed deadbolt that adds securing capability to the same 1-3/4 inch door.
17) I need access control tied into the building system on this door instead of a keyed mortise deadbolt. What are the options?
For a wired opening, the BEST 45HW Series is a heavy duty wired electromechanical mortise lock with 12V/24V operation, and the Schlage L9092EU with 03A trim is a heavy duty corridor function electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC for 1-3/4 inch doors. The Command Access ML190 Series is a heavy-duty motorized storeroom mortise lock with field selectable EL/EU operation on 24VDC. The Sargent 4875 has no electrical function; it is a mechanical key and turn lever deadbolt.
How fast can I get the Sargent 4875-26D-LC 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 Sargent 4875-26D-LC come with a warranty?
Absolutely. The Sargent 4875-26D-LC 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 Sargent 4875-26D-LC?
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
Why buy the Sargent 4875-26D-LC from ZenSupply?
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