Sargent 8221 Grade 1 Mortise D...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$804.57
$545.79
Sargent 8221 Series - Grade 1 Deadlock Mortise Deadbolt Only, Single Cylinder, Not Handed, Conventional Cylinder, Flat Strike

Sargent 8221 Grade 1 Mortise Deadlock with Single Cylinder and Flat Strike

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Model: SGT-8221 03
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$804.57
$545.79
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Sargent 8221 Grade 1 Mortise Deadlock with Single Cylinder - 2 3/4" Backset

Professional-Grade Deadbolt Security Solution

The Sargent 8221 Series mortise deadlock delivers maximum security and durability with Grade 1 ANSI/BHMA A156.13 Series 1000 performance standards. This robust deadbolt-only unit features a 2 3/4" backset, 1 3/4" door thickness compatibility, and non-handed design for versatile installation. Constructed with a one-piece hardened steel deadbolt and UL/ULC listed for fire-rated applications, this industry benchmark provides reliable deadbolt operation with key outside and thumbturn inside control.

Professional Features & Benefits

  • Door Compatibility: Standard 2 3/4" backset with 1 3/4" door thickness for common commercial door applications.
  • Heavy-Duty Construction: One-piece hardened steel deadbolt provides exceptional strength and tamper resistance for high-security applications.
  • Grade 1 Performance: ANSI/BHMA A156.13 Series 1000 certification ensures commercial-grade durability and reliability standards.
  • Universal Installation: Non-handed design eliminates field configuration requirements and simplifies inventory management.
  • Key System Compatibility: Available with all Sargent key systems including Degree, Signature, KESO, and XC for comprehensive access control integration.
  • Fire Safety Compliance: UL and ULC listed for use in fire-rated door assemblies and life safety applications.
  • Complete Package: Includes 2 keys and curved lip strike for immediate installation readiness.
  • Manufacturer Warranty: 10-year limited warranty provides long-term protection and confidence.

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 deadlock products deliver professional-grade reliability with hardened steel construction and Grade 1 ANSI/BHMA certification for demanding commercial applications. The 10-year limited warranty and UL/ULC fire safety listings demonstrate the manufacturer's commitment to quality and code compliance. Engineered for demanding commercial applications where dependable deadbolt security is essential.

Product Specs

Series:
8200 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:
Deadlock
Keyed Function:
Single Cylinder
Lock Type:
Deadbolt
Product Model:
8221
Product Function:
Deadlock
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent SGT-8221 03 – Frequently Asked Questions

1) Will the Sargent 8221 mortise deadlock fit a 1-3/4 inch commercial door?
Yes. The 8221 mortise deadlock is built for 1-3/4 inch door thickness with a 2-3/4 inch backset, which is the standard commercial mortise prep. If your doors are thinner than 1-3/4 inches or your existing mortise pocket is cut to a 2-3/8 inch backset, this is not the right body.
2) Does the Sargent 8221 have a latch, or is it deadbolt only?
Deadbolt only. The 8221 is a deadlock: a one-piece hardened steel deadbolt thrown by key on the outside and a thumbturn on the inside, with no latchbolt and no lever or knob trim. Use it as an auxiliary bolt above an exit device or alongside a passage set. If you need a single lock that both latches and bolts, look at a lockset function instead, such as the Cal-Royal NM8440 privacy mortise lock with deadbolt.
3) Can I use the Sargent 8221 deadlock on a fire rated door?
Yes. The 8221 is UL and ULC listed for use in fire rated door assemblies and life safety applications.
4) Will the Sargent 8221 key into my existing Sargent master key system?
It takes a conventional cylinder and works with all Sargent key systems, including Degree, Signature, KESO, and XC, so it can be brought into an existing Sargent keyway and master keying scheme. It is a single cylinder unit: keyed outside, thumbturn inside.
5) What is a mechanical alternative to the Sargent 8221 mortise deadlock if I need a deadbolt-only mortise unit from another brand?
The Kaba Ilco 185 Series mortise lock is also a deadbolt-function, no-handing mortise unit, so it covers the same deadbolt-only role as the Sargent 8221, which is a non-handed mortise deadlock with key outside and thumbturn inside. The 8221 is certified to ANSI/BHMA A156.13 Series 1000 Grade 1 and UL/ULC listed for fire-rated door assemblies; specify the Sargent when the opening requires that Grade 1 mortise deadlock certification and Sargent key system compatibility.
6) I need a deadbolt on the door but also a latch and lever for daily traffic. What should I use instead of the Sargent 8221?
The Sargent 8221 is a deadlock only - it provides a deadbolt with key outside and thumbturn inside and no latchbolt or lever. For an opening that needs both, the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with auxiliary deadlatch. Those give you a latching lockset in one mortise pocket rather than a separate deadbolt body.
7) Is there an electronic equivalent to the Sargent 8221 mortise deadbolt for keypad access?
Yes. The Alarm Lock DL4500 Series is a Grade 1 electronic mortise deadbolt with 2,000 user codes and privacy keypad, fitting doors 1-5/8 inch to 1-7/8 inch thick. The Sargent 8221 is a purely mechanical Grade 1 mortise deadlock operated by key outside and thumbturn inside, with compatibility across Sargent Degree, Signature, KESO and XC key systems. Choose the DL4500 when you want code-based credential management; choose the 8221 when the opening stays on a mechanical keyway.
8) Do I have to order the Sargent 8221 by hand?
No handing to specify. The 8221 deadlock is non-handed, so one part number covers left and right hand openings. That is useful if you stock spares across a portfolio of buildings.
9) Is the Sargent 8221 deadlock Grade 1?
It meets ANSI/BHMA A156.13 Series 1000 Grade 1, the heavy commercial mortise standard. That is the grade specification writers call for in schools, hospitals, and government buildings.
10) What strike ships with the Sargent 8221 mortise deadlock?
The orderable strike option is the 4-7/8 inch no-lip strike, part 78-0034, which is the standard on every finish offered. A flat, no-lip strike suits a metal frame where the bolt lands flush in the jamb; if your frame needs a lip to protect a wood jamb edge, specify a curved lip strike instead.
11) I need keypad or card access on this opening instead of a key. What should I use?
The 8221 is a mechanical key and thumbturn deadlock with no electrified option. For credential access in a mortise prep, ZenSupply carries the Alarm Lock DL4500 Grade 1 electronic mortise deadbolt with 2,000 user codes, the Dormakaba E-Plex 2066 pushbutton keyless mortise lock, and the TownSteel FME-2000 Grade 1 RFID mortise lockset. Note the DL4500 is specified for 1-5/8 to 1-7/8 inch doors, not the single 1-3/4 inch of the 8221.
12) Is there another non-handed mortise deadbolt I could use instead of the Sargent 8221?
The Kaba Ilco 185 Series mortise lock is a deadbolt function offered with no handing, so it is the closest cross-brand equivalent we hold. The difference to check is the key system: the 8221 runs on Sargent keyways (Degree, Signature, KESO, XC), which matters if the building is already keyed Sargent.
13) Can the Sargent 8221 be locked from the inside without a key?
Yes. Inside control is a thumbturn, so occupants can throw and retract the bolt by hand from the secure side. Outside operation is by key only. Check your local egress code for the opening, since a keyed deadbolt on the outside face with a thumbturn inside is a single-motion release from inside but not a latch.
14) Will a Schlage PM010 or L0170 work as a substitute for the Sargent 8221?
No. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock and the Schlage L0170 is a half dummy trim, non-keyed. Neither secures the door. The Sargent 8221 is a keyed Grade 1 mortise deadlock with a one-piece hardened steel deadbolt, single cylinder outside and thumbturn inside. Use the Schlage parts only where no locking is required.
15) For a classroom door that needs a Grade 1 mortise lock rather than a deadbolt, what do I order instead of the Sargent 8221?
The Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, and the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors. Either handles classroom function at the lever. The Sargent 8221 is a deadbolt-only mortise deadlock and is typically added where a separate deadbolt is wanted above the lockset.
16) What is the difference between the Sargent 8221 and a storeroom mortise lock like the Accentra 8805FL?
The Accentra 8805FL is a Grade 1 storeroom mortise lock with Arcadia lever, so the outside lever is always locked and retracts the latch by key while the inside lever is always free. The Sargent 8221 has no lever or latchbolt at all - it is a Grade 1 non-handed mortise deadlock with a hardened steel deadbolt thrown by key outside or thumbturn inside. A storeroom opening that must latch on every close needs the 8805FL; the 8221 secures only when someone throws the bolt.
17) Can I use a Marks USA 21AC or 22AC mortise lock in place of the Sargent 8221 on a commercial hollow metal door?
Not for that door. The Marks USA 21AC and 22AC are ornamental iron mortise locks built for 1 inch door thickness. The Sargent 8221 is specified for 1-3/4 inch door thickness with a 2-3/4 inch backset, which matches common commercial hollow metal and wood door prep. Reserve the Marks units for narrow ornamental iron gates and stiles.
18) We want mobile and card credentials on a deadbolt opening. Is there an option other than the Sargent 8221?
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, carrying a 3 hour fire rating. The Sargent 8221 is a mechanical Grade 1 mortise deadlock, UL and ULC listed for fire-rated assemblies, with no credential reader. Specify the LEMD-GRW where the deadbolt must be managed by credential, the 8221 where mechanical key control is the standard.
19) For a thicker door, is the Sargent 8221 or a Hager 3800 Series mortise lock the better fit?
The Hager 3810S and 3810E cover 1-3/4 inch through 2-1/2 inch doors with a 2-3/4 inch backset, but they are passage function and do not lock. The Sargent 8221 shares the 2-3/4 inch backset and is specified at 1-3/4 inch door thickness with a keyed deadbolt. If the opening is thicker than 1-3/4 inch and needs no security, the Hager passage locks fit; if it needs a deadbolt at a standard 1-3/4 inch door, the 8221 is the match.
20) What finishes can I get the Sargent 8221 deadlock in to match the rest of my doors?
Twelve finishes: 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, 10B oil rubbed dark oxidized satin bronze, 10BE, 10BL, 20D dark statuary bronze lacquered, 32 bright stainless, 32D satin stainless, BSP black suede powder coat, and WSP white suede powder coat. 32D is the usual choice for matching existing commercial stainless hardware.
21) Emtek 3102 and 3104 mortise entrance locksets look similar - would either replace the Sargent 8221?
No. The Emtek 3102 Memphis and 3104 Hamilton mortise entrance locksets are dummy function, meaning they are pull trim with no working lock mechanism. The Sargent 8221 is a keyed Grade 1 mortise deadlock with a one-piece hardened steel deadbolt and single cylinder. Use the Emtek trims on inactive leaves only.
How fast can I get the Sargent SGT-8221 03 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 SGT-8221 03 come with a warranty?
Absolutely. The Sargent SGT-8221 03 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 SGT-8221 03?
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 SGT-8221 03 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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