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Sargent 8200 Mortise Locks
ASSA ABLOY SARGENT's ANSI/BHMA Grade 1 heavy-duty mortise lock — widely considered the industry benchmark for durability. Heavy cast stainless steel chassis, 54 mechanical and electrified functions, and the category's best fail-safe/fail-secure electrified implementation.
Parent company: ASSA ABLOY (SARGENT Manufacturing)
About Sargent 8200
The Sargent 8200 Series is ASSA ABLOY SARGENT's Grade 1 mortise lock, built to the heaviest chassis specification in the category. While all five major brands meet ANSI A156.13 Grade 1, the 8200 is the one most commercial specifiers and commercial locksmiths point to when asked "which is the toughest." The cast stainless steel chassis and over-engineered internal linkages are rated for millions of operational cycles without measurable wear. For K-12, healthcare, correctional, and transit environments where doors see abuse, the 8200 is the spec that survives.
The 8200 offers 54 functions including extensive electromechanical, security, and monitoring variants. The 8204 storeroom (F07), 8205 entry (F04), 8237 classroom (F05), 8238 classroom security-intruder latch bolt (F32), 8265 privacy (F22), 8255 apartment/dormitory, and 8251 storeroom with deadbolt (F14) cover the full commercial specification range. The electrified 8270 fail-safe and 8271 fail-secure are widely considered the most-reliable mortise access control lockbodies on the market — low-current solenoid design with integrated Request-to-Exit (RX) switching.
Sargent's keying systems are a core part of the 8200's commercial appeal. Standard LA keyway with upgrade paths to Degree, Signature, and KESO patented high-security systems, plus the XC restricted keyway for multi-building portfolios. Sargent's master keying depth rivals Schlage — critical for universities, hospitals, and large government installations. Key-En-Lock is an authorized Sargent dealer and services the full 8200 lineup across Brevard County with truck-stocked parts.
Sargent 8200 Functions & Models We Service
Every mortise lock function corresponds to a specific door-use scenario — storeroom doors stay locked from outside, classrooms unlock from inside only, privacy functions need emergency release. Below is the function lineup we stock parts for and service across Brevard County.
| Model | Function Name | ANSI | Description |
|---|---|---|---|
| 8215 | Passage Latch | F01 | Latchbolt by lever either side at all times. Interior corridors and conference rooms. |
| 8265 | Privacy Bed/Bath | F22 | Inside thumbturn locks; emergency small-tool release outside. Single-occupancy restrooms, hotel rooms. |
| 8266 | Privacy Bed/Bath (Indicator) | F19 | 8265 with exterior indicator window (Vacant/Occupied). |
| 8204 | Storeroom / Closet | F07 | Outside lever always locked; key only retracts. Inside always free. Server rooms, records, utility, mechanical. |
| 8205 | Office / Entry | F04 | Outside lever key-locked; inside always free. Standard commercial office entry function. |
| 8206 | Storeroom / Service | F07 | Storeroom variant with thumbturn locking option from inside. Utility rooms. |
| 8213 | Exit / Communication | — | Outside lever always locked; inside always free. No outside operation even with key. Dedicated exit-only doors. |
| 8217 | Asylum / Institutional | F30 | Double-cylinder — both sides key-locked. High-security interior utility, drug storage, weapons rooms. |
| 8225 | Dormitory (Double Cyl) | F14 | Double cylinder with deadbolt. Dormitory exit doors and high-security apartments. |
| 8231 | Utility Lock | F07 | Heavy-duty storeroom variant for mechanical and utility rooms. |
| 8236 | Closet | F07 | Simpler storeroom — closet door application. Single-motion outside key; inside free. |
| 8237 | Classroom | F05 | Standard classroom — outside key locks/unlocks; inside always free. Pre-2015 classroom spec. |
| 8238 | Classroom Security Intruder Latchbolt | F32 | Intruder-resistant — deadlocking auxiliary latchbolt prevents shim/card attack. Current K-12 school safety spec. |
| 8243 | Dormitory / Entrance | F13 | Key throws deadbolt and locks lever; inside lever retracts both in one motion. |
| 8245 | Dormitory (Key In Lever) | F13 | 8243 variant with key-in-lever outside cylinder. |
| 8251 | Storeroom w/ Deadbolt | F14 | 8204 + separate 1" deadbolt. High-security storerooms — servers, IT, HVAC. |
| 8255 | Apartment / Dormitory Corridor | F20 | Dormitory with key-lockable outside lever plus deadbolt. Multi-family corridor and hotel suites. |
| 8270 | Electrified Fail-Safe | F04 | Power locks; power loss unlocks. Stairwell reentry (IBC 1010.1.9.12), fire corridor doors. 12V or 24V DC. |
| 8271 | Electrified Fail-Secure | F04 | Power unlocks; power loss locks. Standard card-reader entry. 12V or 24V DC. Industry-benchmark electrified mortise. |
ANSI F-Function Quick Reference
ANSI A156.13 standardizes mortise lock functions so specifications are portable across brands. When an architect specs "F04 entry/office," any Grade 1 mortise lock from any of the brands on this page will meet that function — you're just picking the brand based on warranty, keyway, and parts availability.
| ANSI | Function |
|---|---|
| F01 | Passage — no locking |
| F04 | Entry/Office — key locks outside lever |
| F05 | Classroom — key outside, inside free |
| F07 | Storeroom — outside always locked except by key |
| F13 | Dormitory — key throws deadbolt + locks lever |
| F14 | Storeroom with Deadbolt — double cylinder |
| F19 | Privacy with Indicator — vacant/occupied |
| F20 | Apartment Corridor — key + deadbolt |
| F22 | Privacy Bed/Bath — inside thumbturn |
| F30 | Institutional — double cylinder both sides |
| F32 | Classroom Security — deadlocking intruder latchbolt |
Sargent 8200 Trim Options
Lever & Knob Designs
| Code | Design | Notes |
|---|---|---|
| L | L Lever (curved) | Traditional curved return — most-specified Sargent lever for general commercial. |
| B | B Lever (contemporary) | Straight rectangular lever with modern profile. Contemporary office and retail. |
| J | J Lever (ADA) | ADA-compliant sweep-return lever — ANSI A117.1 compliant. Hospital and public-accommodation standard. |
| LP | LP Lever | Medium-profile straight lever with flat pad. Architectural contemporary. |
| P | P Lever | Pull-style lever with angled return. Institutional and educational. |
| MD | MD Lever (vandal) | Mortise Designer — reinforced vandal-resistant lever. School locker rooms, detention. |
Rose & Escutcheon Styles
| Code | Style | Notes |
|---|---|---|
| LN | LN Rose (sectional) | Standard Sargent rose — separate lever rose, no full plate. Cleaner contemporary look. |
| VN | VN Escutcheon | Full vertical escutcheon covering cylinder + lever. Traditional heavy-duty commercial. |
| WN | WN Escutcheon | Wide escutcheon variant. Specifier-chosen aesthetic option. |
| EN | EN Escutcheon (extended) | Extended length escutcheon for door applications requiring coverage. |
Finishes
BHMA-coded architectural finishes. We stock the most-specified finishes (626 satin chrome, 630 satin stainless, 605 bright brass, 612 satin bronze) for fast in-field matching.
Keying & Cylinders
- LA Keyway (standard) — 6-pin Sargent LA keyway — factory default. Commercial master-keyable.
- LB, LC, LD keyways — Additional Sargent commercial keyways for sectional master keying across multi-building portfolios.
- Degree (patented) — Sargent's entry-level patented keyway — restricted blank distribution.
- Signature (patented) — Mid-tier patented keyway with expanded master keying capability. Common on university campuses.
- KESO (high-security) — Top-tier Sargent patented high-security system — pick/drill/impression resistant, factory-dealer-restricted blanks.
- XC (restricted) — Factory-geographic-exclusive keyway. Comparable to Schlage Primus XP for key control depth.
- Signature Series IC — Large-Format Interchangeable Core variant of Signature — core swap rekey.
- SFIC (Small-Format IC) — Best-compatible 6- or 7-pin SFIC cores. Fast rekey by core swap; no disassembly.
- T3 / T4 Thumbturns — Specialty thumbturn styles for privacy and institutional functions.
Electrified & Access Control Variants
Modern commercial buildings tie mortise locks into card readers, mobile credentials, and access control panels. Sargent 8200 offers a full electrified lineup for card-reader exits, stairwell reentry (IBC 1010.1.9.12), and fail-safe vs fail-secure configurations.
- 8270 — Fail-safe: Power keeps outside lever locked; power loss unlocks. Required for stairwell reentry (IBC 1010.1.9.12), smoke/fire corridor doors. 12V or 24V DC operation.
- 8271 — Fail-secure: Power unlocks outside lever; power loss keeps locked. Standard for card-reader entry. Widely regarded as the most-reliable fail-secure mortise in commercial service.
- RX (Request-to-Exit) switch: Integrated microswitch signals access control when inside lever is operated. Logs egress for audit.
- LC (Less Cylinder): Ordered without cylinder — pair with any Sargent-compatible mortise cylinder or SFIC core during installation.
- LB (Less Body / Body Only): Lockbody-only orders for field cylinder and trim customization.
- T3 electric latch monitor: Built-in latchbolt position monitor signals access control — confirms door actually latched closed.
- Door Position Switch integration: DPS variant integrates door open/closed sensor directly into lock — cleaner install than separate magnetic contact.
- SN200-8200 Series: Integrated Wiegand reader + mortise lockbody. Migration path from legacy card systems to mobile credentials using HID Signo Reader Technology.
- Vandlgard-equivalent trim: Sargent offers reinforced MD lever for abuse-prone doors — comparable breakaway protection to Schlage's Vandlgard.
Fire Rating & Code Compliance
- UL Listed for fire-rated doors up to 3 hours A-label.
- Field-reversible latchbolt handing retains fire rating per Sargent certification.
- Fire-rated installs use standard ANSI strike (4-7/8" x 1-1/4") with dust box.
- Electrified 8270/8271 retain UL fire rating when wired per Sargent spec.
- SFIC core variants retain UL fire rating when Grade 1 cores are used.
- Florida Building Code accepts UL 10C labeled mortise locks on A-label fire doors — verify label during annual NFPA 80 inspection.
Common Sargent 8200 Repairs We Service
After 25+ years of commercial locksmith work in Brevard County, these are the failure modes we see most often on Sargent 8200 mortise locks. All are truck-serviceable — we don't need to take the door off its hinges.
- Lever spring failure / lever sag — internal return spring wear after 5-10 years of heavy use. On-site spring kit replacement without door removal.
- Cylinder stuck / key binds — cam alignment or retainer loose. On-site cam re-position; full cylinder swap if wafers worn.
- Deadbolt won't retract / stuck extended — door/frame sag misaligning strike, or bent deadbolt from forced entry attempt. Re-shim strike, adjust hinges, or bolt replacement.
- Latchbolt won't retract on lever press — internal drive cam or hub wear. Lockbody rebuild with Sargent-OEM kit or full 8200 lockbody swap.
- 8271 electrified lock not releasing — solenoid failure, low voltage from long wire run, or access control relay issue. Test voltage at the lock, replace solenoid coil or full electrified lockbody.
- 8238 auxiliary deadlocking latchbolt bent — usually after forced-entry attempt. Replace latchbolt and auxiliary pin assembly.
- KESO / Signature rekey — factory-authorized dealer rekey. We are Sargent-authorized in Brevard County; handle on-site KESO / Signature / XC rekeys.
- SFIC core swap — replace cores in 30 seconds per door. Train facility staff on core removal for ongoing rekeys.
- Master key system extension — add doors to existing Sargent master key system. On-site pin, test, document.
- Vandal repair — replace bent levers, smashed escutcheons, pried strikes. Upgrade to MD reinforced lever for repeat-damage doors.
Need Sargent 8200 Service in Brevard County?
Licensed, insured, 25+ years of commercial mortise lock experience. We stock parts on the truck.
Call (321) 224-5625Frequently Asked Questions
Why do commercial locksmiths consider the Sargent 8200 "the most durable" mortise lock?
The 8200 chassis uses heavier-gauge cast stainless steel than competing mortise locks, and the internal linkages are over-engineered for cycle life. In real-world commercial service — K-12 schools, hospitals, government, transit — 8200s routinely run 20+ years with only cylinder and spring service, while lighter-chassis mortise locks need full lockbody replacement in 12-15 years. The 8271 electrified variant has an even stronger reputation for reliability in high-cycle access-controlled installations. If you need a mortise lock that outlasts the building finishes around it, spec the 8200.
What is the difference between the Sargent 8237 and 8238?
The 8237 (classroom, F05) is the standard classroom function — outside lever locked by key, inside always free. The 8238 (classroom security-intruder latch bolt, F32) adds an auxiliary deadlocking latchbolt: when the outside lever is key-locked, the latchbolt cannot be shimmed, pushed back, or carded from the outside. For current K-12 construction or renovation under updated Florida school safety guidance, the 8238 is the correct spec. It defeats common "credit card" and shim attack methods that work on standard classroom functions.
How does Sargent KESO compare to Schlage Primus?
Both are factory-restricted high-security patented keyways. KESO uses a side-bit milling pattern that resists picking and impressioning — UL437-equivalent performance. Primus uses a dual-locking cylinder design. Key control (blank restriction) on both is dealer-authorized. Primus XP adds geographic exclusivity. KESO and Primus are rough equivalents for security; the choice is usually driven by which keyway already exists in your building portfolio. For a new building, either is a solid Grade 1 high-security spec.
Can I retrofit an existing Sargent 8200 to electrified without re-mortising the door?
Yes — the 8270 / 8271 electrified lockbody fits the same mortise pocket as the mechanical 8200. Swap the lockbody, run low-voltage wiring through a power-transfer hinge or electric hinge, add a power supply, and tie into your access control. We handle end-to-end retrofit including the wiring and power supply sizing. Typical retrofit per opening is $900-$1,500 depending on wire run length and access control integration complexity.
Is the Sargent 8200 code-compliant for Florida K-12 classroom security?
Yes. The 8238 (F32 classroom security) meets current Florida school hardware specifications for classroom doors: free inside egress (NFPA 101), UL 3-hour fire rating for fire-rated classrooms, and deadlocking auxiliary latchbolt preventing shim/card attack from outside. For active-shooter-response retrofits, 8238 is the strongest Sargent spec. We've installed 8238s across multiple Brevard County K-12 schools and private academies.
What access control platforms work with the Sargent 8271 / 8270?
Any standard 12V or 24V DC access control system: PDK.io, Openpath, Brivo, S2, Genetec, LenelS2, Honeywell Pro-Watch, Kantech, CCure, and proprietary systems. The 8271 fail-secure is the default for card-reader entries; 8270 fail-safe is for stairwell reentry and fire corridor doors. Add RX (Request-to-Exit) for egress logging and LC latchbolt monitor for closed-door confirmation. We install the lock, run low-voltage wiring, and hand off to your access control vendor — or handle end-to-end through our PDK.io dealer authorization.
Are Sargent and Corbin Russwin the same company?
Both are brands under the ASSA ABLOY parent company, but they operate as separate businesses with distinct product lines, keying systems, and dealer networks. Sargent 8200 and Corbin Russwin ML2000 are not interchangeable — the lockbodies have different dimensions, trim patterns, and keyway systems. ASSA ABLOY maintains both brands so architects and end-users can spec either based on regional preference, existing building key systems, or dealer relationships. A Sargent keyway won't work in a Corbin Russwin cylinder and vice versa.
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