Sargent 8238 Classroom Securit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,854.84
$499.94
Sargent Sargent 8200 Series - (8238) Classroom Security Intruder Function Rose Trim, Heavy Duty Double Cylinder no Deadbolt Mortise Lock, Grade 1 SGT-8238

Sargent 8238 Classroom Security Intruder Function Mortise Lock with Heavy Duty Double Cylinder Grade 1

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Model: 8238 EA 26D
From the 8200 Series Collection
$1,854.84
$499.94
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,854.84
$499.94
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Sargent 8238 Classroom Security Intruder Function Mortise Lock with Grade 1 Certification and 16 Million Cycle Rating

Professional Grade 1 Mortise Lock with Advanced Classroom Security Features

The Sargent 8238 classroom security intruder function mortise lock delivers maximum security and performance as the industry benchmark for commercial mortise locks. This heavy-duty lever-style lock features a 2 3/4" backset, 1 3/4" door thickness compatibility, and 3/4" latchbolt throw for reliable operation. With UL 10C fire rating up to 3 hours and ANSI/BHMA A156.13 Series 1000 Grade 1 certification, this lock meets the highest commercial standards for classroom security applications.

Professional Features & Benefits

  • Exceptional Durability Rating: UL Cycle Above and Beyond test completed at 16 million cycles (Verification ID: V584148) for exceptional longevity in high-traffic educational applications.
  • Standard Door Compatibility: Designed for 1 3/4" door thickness with 2 3/4" backset depth for standard commercial door installations.
  • Grade 1 Security Performance: ANSI/BHMA A156.13 Series 1000 Grade 1 certification with 3/4" latchbolt throw provides maximum security for classroom and commercial applications.
  • Fire-Rated Construction: UL 10C positive pressure fire-rated up to 3 hours with NFPA 80 compliance for life safety applications in educational facilities.
  • Universal Key System Integration: Integrates with all SARGENT key systems including Degree, Signature, KESO, and XC for flexible access control in educational environments.
  • Field-Reversible Handing: Field reversible design allows on-site configuration for left or right-hand applications without additional hardware.
  • Advanced Power Management: EcoFlex technology on electromechanical functions creates up to 89% energy savings with 12 to 24VDC operation for efficient classroom security systems.
  • Comprehensive Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm voltage (12 to 24VDC) 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

  • Educational Facilities and Classroom Security
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Retail Establishments

Why Choose Sargent Quality?

Sargent 8200 Series mortise locks deliver professional-grade reliability with patented design and construction rated for 16 million cycles in UL testing. The 10-year limited warranty with 2-year electrical component coverage provides comprehensive protection. Engineered for demanding commercial applications where dependable performance and maximum security are essential, this lock represents the industry benchmark for mortise lock technology.

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:
Classroom Security Intruder
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Classroom Security
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent 8238 EA 26D – Frequently Asked Questions

1) What does the Sargent 8238 classroom security intruder function actually do at the door?
The 8238 is a double cylinder classroom security lock, so the outside lever is locked and unlocked by key from either side of the door. A teacher can lock the corridor side from inside the room with a key, without stepping into the hallway. There is no deadbolt on this function, just the 3/4 inch throw latchbolt, and the inside lever always retracts the latch for free egress.
2) Will the Sargent 8238 mortise lock fit a standard 1-3/4 inch commercial classroom door?
Yes. The 8238 is built for 1-3/4 inch door thickness with a 2-3/4 inch backset, which is the standard commercial mortise pocket. If your doors are thicker or the existing prep is a 2-3/8 inch backset bored prep, this is not a drop-in.
3) Will the Sargent 8238 latch into the strike already in my frame?
The latchbolt throws 3/4 inch, which is the standard ANSI mortise latch projection, so it will engage a correctly installed ANSI 4-7/8 inch mortise strike. What decides the swap is the pocket: the door needs a mortise cavity cut for a 2-3/4 inch backset lock body, not a cylindrical bore.
4) Can I use the Sargent 8238 on a fire-rated classroom door?
Yes. The 8238 carries a UL 10C positive pressure fire rating up to 3 hours and meets NFPA 80. It is also ANSI/BHMA A156.13 Series 1000 Grade 1.
5) What do I have to specify when ordering a Sargent 8238 mortise lock?
Five things. Cylinder handling: standard cylinder, less cylinder, 70 small format interchangeable core prep less core, or 60 large format IC prep less core. Keying: keyed different, keyed alike, or to a key code (pick None if you ordered less cylinder). Lever style from A, B, E, F, J, L, P or W. Rose from LN at 2 inches, O at 2-3/4 inches, E at 3-1/16 inches, or L at 3-1/2 inches. Then finish, 16 choices from 26D satin chrome and 32D satin stainless through oil rubbed bronze and black or white suede powder coat. Indicator and thumbturn options are extra if you want them.
6) Will the Sargent 8238 work with the keyway we already use across the campus?
The 8238 integrates with all SARGENT key systems, including Degree, Signature, KESO and XC, so it can be keyed into an existing Sargent master key system. If your cores come from your own locksmith or a different platform, order it with the 70 small format IC prep or the 60 large format IC prep less core and drop your own core in.
7) Is the Sargent 8238 an electronic lock, and does it need wiring?
No. The 8238 is a mechanical, key operated mortise lock. Nothing to wire and no power supply to plan for. If the opening needs access control, look at an electrified or standalone lock instead, such as the BEST 45HW wired electromechanical mortise lock running 12V or 24V, or the Command Access ML190 motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC.
8) What else could I buy instead of the Sargent 8238 for classroom security?
A few directions. For a straight mechanical Grade 1 classroom mortise lock, the Corbin Russwin ML2003 and the Cal-Royal NM8070 both cover 1-3/4 inch doors. If you want a visual indicator built into the escutcheon, 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 x 2-3/4 x 7/16 inches. For credential based intruder function, TownSteel's FME-4000 Series is an electronic intruder classroom mortise lock with RFID. The 8238 differs from all of them in being double cylinder mechanical, keyed from both sides, with no deadbolt.
9) What is the difference between the Sargent 8238 and a standard classroom mortise lock like the Corbin Russwin ML2003?
The Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, keyed from the outside in the conventional classroom pattern. The Sargent 8238 is a classroom security intruder function with a double cylinder keyed function, which means it is keyed on both sides so the door can be locked down from inside the room without stepping into the corridor. If a lockdown-from-inside capability is required, the intruder function is the one to specify.
10) What electronic mortise lock offers intruder classroom function instead of a keyed one?
The TownSteel FME-4000 is an electronic intruder classroom mortise lockset with RFID technology, Grade 1 heavy duty, for 1-3/4 inch doors. The Sargent 8238 achieves the same intruder classroom result mechanically with a double cylinder keyed function and no electronics. Choose the FME-4000 if credential-based access and audit are required; choose the 8238 where the school wants a purely mechanical lock keyed into an existing SARGENT key system.
11) Can I use the Baldwin 6301LS mortise lock body in place of the Sargent 8238?
They are not interchangeable in the same prep. The Baldwin 6301LS is an entry/apartment lever by lever mortise lock body on a 2-1/2 inch backset for doors 1-3/4 inch and over, while the Sargent 8238 is built on a 2-3/4 inch backset for 1-3/4 inch doors. The backset difference alone changes the door prep, and the Baldwin is an entry/apartment function rather than classroom security intruder.
12) Do I have to order the Sargent 8238 handed?
No. The 8238 lock body is field reversible, so one lock covers left and right hand openings and you set it on site without extra parts. That also makes it easier to stock a single spare for a whole building.
13) How durable is the Sargent 8238 for a high traffic school corridor?
Heavy duty commercial rated, Grade 1, and Sargent completed UL Cycle Above and Beyond testing on the 8200 Series at 16 million cycles under verification ID V584148. That is the class of lock you put on a main classroom or corridor door that gets hit every period.
14) Is the Sargent 8238 the right function for an office or storeroom door?
Not really. The 8238 is specifically classroom security intruder, keyed both sides, which is overkill and awkward on a door where staff need simple locked outside trim. For a storeroom function, the Accentra 8805FL or Cal-Royal NM8080 are Grade 1 mortise storeroom locks; for office or entrance, Cal-Royal NM8050. Stay in the 8200 Series if you are standardizing on Sargent trim and keyways across the building.
15) Which mortise lock should I use if I need intruder function in a lock body only, without trim?
The BEST 45HCA heavy duty mortise lockbody with intruder function is supplied as a lock body, where the Sargent 8238 is a complete classroom security intruder lockset with rose trim, lever and double cylinder keyed function. Choose the BEST 45HCA body when you are reusing or separately specifying trim; choose the Sargent 8238 when you want the lever, rose and cylinder prep as one assembly.
16) Is the Cal-Royal NM8070 a substitute for the Sargent 8238?
The Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, so it matches the Sargent 8238 on grade and door thickness. It is a standard classroom function, not the classroom security intruder function of the 8238, and the 8238 is a double cylinder lock. Use the NM8070 where a conventional classroom keyed-outside lock satisfies the opening, and the 8238 where inside key lockdown is specified.
17) For non-classroom openings in the same building, what mortise locks pair with the Sargent 8238?
Where the opening does not need intruder function, the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation. The Sargent 8238 covers the classroom security intruder openings in the same Grade 1 mortise prep.
18) Is a privacy mortise lock like the Cal-Royal NM8440 an acceptable stand-in for classroom security?
No. The Cal-Royal NM8440 is a Grade 1 privacy/bed/bath mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with 2-3/4 inch backset. Privacy functions are non-keyed thumbturn locks. The Sargent 8238 is a keyed double cylinder classroom security intruder lock, which is what a classroom lockdown specification calls for.
19) What mortise lock should I use for an anti-ligature opening instead of the Sargent 8238?
For behavioral health and detention openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel and the MRX-A-01 is a satin stainless ligature resistant arch trim mortise lockset, both passage function for 1-3/4 inch doors. The Sargent 8238 uses conventional lever trim with rose and is a keyed classroom security intruder lock, so it is not a ligature resistant design.
20) What is the difference between the Sargent 8238 and a cylindrical lock like the Schlage PC10?
The Schlage PC10 is a Grade 1 passage cylindrical lock with rose, non-keyed, for 1-3/4 inch doors, and it installs in a bored cylindrical prep. The Sargent 8238 is a mortise lock requiring a mortise pocket in the door edge, and it is a keyed double cylinder classroom security intruder function. A cylindrical lock cannot be dropped into a mortise prep.
21) If the classroom needs credentialed access control rather than a key, what replaces the Sargent 8238?
The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the Accentra NTM623-NR nexTouch Generation 3 mortise lock uses a capacitive touchscreen keypad with cylinder override and no deadbolt. Both handle classroom openings with credentials. The Sargent 8238 is non-electronic and integrates with SARGENT Degree, Signature, KESO and XC key systems instead.
22) What should I use if the classroom door needs to be electrically locked or unlocked from a central system rather than keyed?
The Command Access ML190 is a heavy duty motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC in a storeroom function, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, on 12/24VDC. The Sargent 8238 is a mechanical classroom security intruder lock with no electrical connection.
23) Does the Sargent 8238 come with knobs or levers?
Lever trim only, on rose. Eight lever designs are offered (A, B, E, F, J, L, P, W) with 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. Pick the rose that covers the existing trim footprint on the door face if you are replacing older hardware.
How fast can I get the Sargent 8238 EA 26D delivered?
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Can I return it if it doesn’t work for me?
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Does the Sargent 8238 EA 26D come with a warranty?
Absolutely. The Sargent 8238 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 8238 EA 26D?
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