Sargent 8249 Security Deadbolt...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,890.51
$1,438.84
Sargent Sargent 8200 Series - (8249) Security Deadbolt Function Rose Trim, Heavy Duty Double Cylinder with Deadbolt Mortise Lock, Grade 1 SGT-8249

Sargent 8249 Security Deadbolt Function Rose Trim with Heavy Duty Double Cylinder Mortise Lock

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Model: 8249 EA 26D
From the 8200 Series Collection
$1,890.51
$1,438.84
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,890.51
$1,438.84
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Sargent 8249 Heavy Duty Double Cylinder Mortise Lock with Security Deadbolt Function

Industry Benchmark Mortise Lock with Maximum Security and Performance

The Sargent 8249 heavy duty double cylinder mortise lock delivers maximum security, performance, and durability as the industry benchmark for mortise locks. This security deadbolt function features a multi-functional lock body with 2 3/4" backset depth and 1 3/4" door thickness compatibility. The lock operates from 12 to 24VDC with EcoFlex technology that reduces power consumption up to 96%, and integrates with all SARGENT key systems including Degree, Signature, KESO, and XC.

Professional Features & Benefits

  • Ultra-High Durability Rating: UL Cycle Above and Beyond test completed at 16 million cycles (Verification ID: V584148) for exceptional longevity in high-traffic commercial applications.
  • EcoFlex Energy Technology: Advanced power management creates up to 89% energy savings on all electromechanical functions while maintaining reliable 12 to 24VDC operation.
  • Heavy-Duty Construction: Robust lever-style mortise lock design with patented construction exceeds independently verified testing standards for maximum strength and reliability.
  • Universal Key System Integration: Compatible with all SARGENT key systems (Degree, Signature, KESO, and XC) for seamless integration into existing security infrastructure.
  • Multi-Functional Design: Available in 56 different functions including electromechanical, security and monitoring options with field reversible handing for installation flexibility.
  • Comprehensive Fire Rating: UL 10C Fire-Rated up to 3 hours with NFPA 80 compliance for critical fire safety applications.
  • Grade 1 Performance: ANSI/BHMA A156.13 Series 1000 Operational Grade 1 certification with ADA compliance for professional commercial installations.
  • Extended Warranty Coverage: 10-year limited warranty with 2-year coverage on electrical components for long-term protection and confidence.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm 12 to 24VDC voltage and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including any configurable options per application requirements.
  6. Restore power and test all functions including normal operation, alarm/alert functions, and integration with connected systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Building Security Systems
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Government and Municipal Buildings
  • Industrial Facility Monitoring
  • Multi-Tenant Residential Properties
  • Emergency Exit Compliance

Why Choose Sargent Quality?

Sargent mortise locks deliver professional-grade reliability with patented design and construction rated for 16 million cycles with UL verification. The 10-year limited warranty with 2-year electrical component coverage provides exceptional protection for demanding commercial applications. Engineered with comprehensive certifications including UL 10C 3-hour fire rating and ANSI/BHMA Grade 1 performance where dependable security performance is essential.

Manufacturer Resources

SARGENT Full Line Catalog

Product Specs

Series:
8200 Series
Grade:
Grade 1
Keyed Function:
Double Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Security Deadbolt
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Security Deadbolt
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent 8249 EA 26D – Frequently Asked Questions

1) What does the Sargent 8249 security deadbolt function actually do on the door?
The 8249 is a double cylinder mortise lock with a security deadbolt function, meaning it is keyed from both sides and the deadbolt is thrown and retracted by key only. There is no inside thumbturn release, so it suits openings where you do not want the bolt dropped by hand from the inside. Lever trim on a rose is what you get for the latch side.
2) Will the Sargent 8249 mortise lock fit my door thickness and backset prep?
The 8249 lock body is built for a 1-3/4 inch door with a 2-3/4 inch backset, which is the standard commercial prep. If your doors are thinner than 1-3/4 inches or cut for a 2-3/8 inch backset, this is the wrong body for the opening.
3) Do I have to order the Sargent 8249 handed?
No. The 8249 lock body is field reversible for handing, so one lock covers left and right hand openings and you are not stuck with dead stock if the door swing changes on site.
4) Can the Sargent 8249 go on a 3-hour fire rated opening?
Yes. The 8200 Series lock is UL 10C fire rated up to 3 hours and NFPA 80 compliant, so it is acceptable on labeled openings up to that rating. It also carries ANSI/BHMA A156.13 Series 1000 Operational Grade 1 and is ADA compliant.
5) What do I need to specify for cylinders and keying when ordering the Sargent 8249?
Two choices are required. Cylinder: standard cylinder, less cylinder, 70 prep for small format interchangeable core (less core), or 60 prep for large format interchangeable core (less core). Keying: keyed different, keyed alike, or a specific key code you enter; pick the keying option of none if you selected less cylinder. The lock works with all SARGENT key systems, including Degree, Signature, KESO and XC, so a facility already on a Sargent master key system can add it to the existing hierarchy.
6) For a classroom or privacy opening, is the Sargent 8249 the right function?
No. A double-key security deadbolt cannot be released from inside without a key, which is not what you want on a classroom or a restroom. For classroom use look at the Corbin Russwin ML2003 Grade 1 mortise classroom lockset or the Cal-Royal NM8070 classroom lockset with auxiliary deadlatch; for privacy, the Cal-Royal NM8440 Grade 1 privacy mortise lockset with deadbolt or the Hager 3840S privacy mortise lock with a 2-3/4 inch backset.
7) What is a comparable Grade 1 mortise lock to the Sargent 8249 if the opening needs a storeroom function instead of a security deadbolt?
The Sargent 8249 is a Grade 1 mortise lock with a security deadbolt function and double cylinder keying, so both sides are key-operated. If the opening calls for storeroom operation instead - outside lever always locked, key retracts the latch, inside always free - the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option. Those two change the function of the opening, not the prep type; all three are mortise locks.
8) Is there a keyless or electronic mortise deadbolt I can use in place of the Sargent 8249?
The Sargent 8249 is keyed on both sides with a double cylinder and is a mechanical lock, so access is controlled by key alone. If you want code-based control of a deadbolt instead, 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 inch to 1-7/8 inch. Another route is the Schlage ENGAGE LEMD-GRW, a Grade 1 wireless mortise lock with a 125kHz proximity reader and a mobile-enabled deadbolt with LED, carrying a 3 hour fire rating. The electronic options add credential management; the 8249 adds no power requirement.
9) I need a double cylinder mortise lock but the door is thinner than 1-3/4 inch - what else is there?
The Sargent 8249 is built for 1-3/4 inch door thickness. For thin ornamental iron or narrow doors, Marks USA offers double cylinder entrance mortise locks at 1 inch door thickness: the 21AC Unilock ornamental iron mortise lock with round knob in the 21 Series, and the 22AC ornamental iron mortise lock with round knob in the 22 Series. Both are keyed on both sides like the 8249 but are knob trim rather than lever trim.
10) If I need the mortise lock tied into access control rather than the Sargent 8249, what are the options?
The Sargent 8249 is a mechanical double cylinder security deadbolt. For an electrified mortise lock wired to an access control system, the BEST 45HW Series is a heavy duty wired electromechanical mortise lock with 12V/24V operation, the Command Access ML190 Series is a heavy-duty motorized storeroom mortise lock with field selectable fail safe or fail secure operation on 24VDC, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC operation for 1-3/4 inch doors.
11) For a behavioral health or ligature-resistant opening, can I use the Sargent 8249?
The Sargent 8249 uses lever trim with rose, available in A, B, E, F, J, L, P and W lever styles, which is not a ligature-resistant profile. For those openings, TownSteel offers the MRX-A-01 passage function mortise lockset with satin stainless steel ligature resistant arch trim and the MRX-L-01 Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel, both for 1-3/4 inch doors. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel.
12) What lever, rose and finish combinations does the Sargent 8249 come in?
Eight lever designs (A, B, E, F, J, L, P and W) and four rose sizes: LN at 2 inches, O at 2-3/4 inches, E at 3-1/16 inches and L at 3-1/2 inches. Sixteen finishes are offered, from 26D satin chrome and 32D satin stainless through brass, bronze, oil rubbed 10B, nickel, and black or white suede powder coat. If you are matching existing openings in a building, match the lever letter and rose size as well as the finish number, since all three are visible on the door face.
13) Is the Sargent 8249 durable enough for a high traffic entrance?
It is a heavy duty commercial lock, and Sargent has it through the UL Cycle Above and Beyond test at 16 million cycles (verification ID V584148). That is the reason the 8200 Series shows up on school, healthcare and multi-tenant entrances rather than a light duty cylindrical lock.
14) Is the Sargent 8249 an electronic or access control lock?
No, the 8249 is a mechanical, key-operated mortise lock. If you need a credential or keypad opening on the same mortise prep, the Schlage CO-100-MS standalone keypad mortise lock, the BEST 45HW wired electromechanical mortise lock with 12V/24V operation, or the TownSteel FME-2000 Grade 1 RFID mortise lockset are electronic options in the same category.
15) What is the difference between the Sargent 8249 and the Kaba Ilco 185 Series mortise lock?
Both are mortise deadbolt-function products. The Kaba Ilco 185 Series is a deadbolt function mortise lock supplied with no handing, in a single pack. The Sargent 8249 is a Grade 1 security deadbolt with double cylinder keying supplied with rose trim and a lever, and it is ordered with a choice of lever style A, B, E, F, J, L, P or W and rose size - E rose at 3-1/16 inch, L rose at 3-1/2 inch, LN rose at 2 inch, or O rose at 2-3/4 inch. If the opening needs no lever or trim at all, the 185 is the leaner item.
16) Which mortise lock do I order if the door needs no key at all, not the Sargent 8249?
The Sargent 8249 is a keyed lock with cylinders on both sides. For an unkeyed opening, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a 3800 Series passage mortise lock with rose trim and a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch. For a bed or bath door needing privacy rather than security, the Hager 3840S is a privacy mortise lock with a 2-3/4 inch backset, matching the 8249 backset dimension.
17) Is the Schlage L0170 a substitute for the Sargent 8249?
No. The Schlage L0170 is a Grade 1 heavy duty half dummy trim for L Series mortise openings on 1-3/4 inch doors - a dummy function with no latch or bolt operation. The Sargent 8249 is a working Grade 1 security deadbolt with double cylinder keying. The L0170 is the item you add to an inactive leaf; it will not secure a door. The Emtek 3102 Memphis, 3104 Hamilton, 3106 Manhattan and 3019 Brisbane mortise entrance locksets in the comparable range are likewise dummy function.
18) What is the closest heavy duty mortise lock body to the Sargent 8249 for a public entrance or intruder application?
The Sargent 8249 is a heavy duty Grade 1 mortise lock in a security deadbolt function. If the opening calls for a different heavy duty function on the same prep, BEST offers the 45HCAC heavy duty mortise lock body in a public entrance function with field reversible operation, and the 45HCAINL heavy duty mortise lockbody with an intruder function. Both are lock bodies in the BEST 45H family rather than complete trimmed locksets, so trim is specified separately - the 8249 is ordered with lever and rose selections together.
19) Does the Cal-Royal NM8440 do the same job as the Sargent 8249 since both have a deadbolt?
They are not interchangeable. The Cal-Royal NM8440 is a Grade 1 privacy bed and bath mortise lockset with a deadbolt for 1-3/4 inch doors, where the deadbolt is thrown from the inside for privacy. The Sargent 8249 is a security deadbolt function with double cylinder keying, meaning the bolt is operated by key from both sides. Choose the NM8440 for a restroom or bedroom and the 8249 where key control is required on both faces of the door.
20) What mortise lock compares to the Sargent 8249 for an office or entrance door where the lever should still retract the latch?
The Sargent 8249 security deadbolt is key-only on both sides with no latch operation by lever. For a keyed entrance or office door, the Cal-Royal NM8050 is a Grade 1 heavy duty office and entrance mortise lockset with an auxiliary deadlatch for 1-3/4 inch doors, and the Hager 3850E is a 3800 Series Grade 1 office mortise lock with lever and escutcheon, non-keyed, on a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch. The Baldwin 6301LS is an entrance and apartment function lever by lever mortise lock body on a 2-1/2 inch backset for doors 1-3/4 inch and over, which is a different backset than the 8249.
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Does the Sargent 8249 EA 26D come with a warranty?
Absolutely. The Sargent 8249 EA 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 Sargent 8249 EA 26D?
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