Is the Falcon T Series the same as the Schlage T Series?

There is no Schlage T Series. The T Series is a Falcon product. Falcon and Schlage share the Allegion parent company and are frequently installed in the same buildings, which leads to the two brand names being used interchangeably in the field. If you are searching for "Schlage T Series cylindrical lock parts," the correct product is the Falcon T Series.

What does the Falcon T Series function code determine?

The function code (T101, T291, T351, T411, T511, T521, etc.) determines the chassis assembly required. Each function defines how the lock operates from each side of the door and which chassis part number applies. Ordering a chassis without confirming the function code is the primary cause of wrong-part returns on T Series service calls.

What is Pressure Release lever rotation on the T Series?

Pressure Release allows the lever to rotate freely when subjected to excessive downward or upward force, instead of transmitting that force into the internal chassis. It is standard on every T Series unit and does not require a separate part. It protects the chassis on high-abuse openings and is one of the key differences between the T Series and standard Grade 1 cylindrical locks.

What cylinders are compatible with the Falcon T Series?

The T Series accepts any manufacturer's cylinder without modification. Standard units ship with Falcon's G keyway cylinder. IC-prep versions accept Schlage SFIC, Arrow (Flex Core included), Best (PKS and Peaks), InstaKey, Kaba Peaks, Keymark, and KSP cores interchangeably. No adapter tailpieces are required for most cylinder substitutions.

What is the difference between T Series standard prep and IC prep chassis?

Standard prep chassis use direct-mount cylinders (Falcon G keyway or equivalent). IC prep chassis have a housing that accepts interchangeable cores from multiple manufacturers. IC prep chassis are identified by the "-001-00" suffix in the part number (e.g., A30758-001-00 instead of A30758-000-00). Confirm which format is installed before ordering any chassis replacement.

Falcon T Series Cylindrical Lock Parts Guide|Security Parts

The Falcon T Series cylindrical lock is the extra heavy-duty Grade 1 choice for institutional buildings, high-traffic corridors, and any opening where a standard Grade 1 lock is not enough. When searching for "Schlage T Series cylindrical lock parts," the product you are looking for is the Falcon T Series. Falcon and Schlage share the Allegion parent company and are commonly specified together in the same building, which is why the two names get used interchangeably in the field. The T Series is Falcon's product, and its parts are organized at SecurityParts.com under the Falcon T Series parts catalog.

This guide covers every replaceable component in the Falcon T Series, the function codes that determine which chassis to order, and the features that make the T Series distinct from the Schlage ND and ALX Series that share the same buildings.

Quick Answer

The Falcon T Series is an extra heavy-duty ANSI/BHMA A156.2 Series 4000, Grade 1 cylindrical lock. It is the Falcon-branded equivalent to the Schlage ND Series in terms of market position, but it has a distinct chassis design, lever attachment system, and cylinder compatibility model.
The T Series accepts any manufacturer's cylinder without modification, including Schlage SFIC, Arrow, Best, and IC cores. This makes it the preferred choice for buildings with mixed key systems.
The function code determines the chassis. T101, T291, T301, T351, T381, T411, T501, T511, T521, T561, and T581 are all distinct chassis assemblies. Ordering by appearance rather than function code is the primary source of wrong-part returns.
The Pressure Release lever rotation is a built-in T Series feature that allows the lever to rotate freely when subjected to excessive force, protecting the internal chassis from the damage that breaks standard lever attachments.
All OEM chassis, lever, latch, and trim parts are stocked at SecurityParts.com. Browse the full T Series parts catalog.

What Makes the Falcon T Series Different From Other Grade 1 Cylindrical Locks

Every Grade 1 cylindrical lock passes the same ANSI/BHMA testing threshold. What separates them is how they are built to exceed that threshold and what that means for parts ordering and field service.

The Falcon T Series is built specifically for abuse-resistant, high-traffic institutional applications. Three design features define it:

Pressure Release Lever Rotation

Standard cylindrical lock levers are rigidly attached to the trim chassis. When someone applies excessive downward or upward force to a locked lever, that force transfers directly into the internal mechanism and causes chassis failure. The Falcon T Series uses Pressure Release lever rotation as standard on every unit. The lever rotates freely under excessive force instead of transmitting it to the chassis. This is not a field-installed option. It is designed into the product and requires no separate part to activate.

From a parts standpoint, Pressure Release matters because it significantly extends chassis life on high-abuse openings. When a T Series chassis fails on a properly installed unit, the failure mode is usually high-cycle wear in the latch mechanism or the cylinder, not lever-force damage to the chassis itself.

Universal Cylinder Acceptance

The T Series is built to accept any manufacturer's cylinder without modification. The standard configuration comes with Falcon's G keyway cylinder. Field conversion to a different cylinder brand or format does not require a special prep or core driver.

This matters directly for parts ordering on IC (interchangeable core) installations. The T Series accepts Schlage SFIC and FSIC, Arrow (including Flex Core), Best (PKS and Peaks), InstaKey, Kaba Peaks, Keymark, and KSP cores interchangeably. On a building that mixes T Series locks with Schlage ND Series hardware, the same key system can run across both products without adapter hardware.

Extra Heavy-Duty Construction

The T Series withstands torque loads that exceed the Grade 1 test standard. Levers are solid pressure-cast zinc finished to match mating parts. Roses are wrought brass or bronze installed over steel through-bolted rose inserts. The compression spring design behind the cylinder virtually eliminates lever sag in normal service, which means the spring cage - the highest-wear component on Schlage ND and ALX Series units - rarely fails on T Series locks in properly maintained installations.

Falcon T Series Function Codes and Chassis Part Numbers

Falcon T Series T351/T561 Chassis Assembly (A30758-000-00). Standard 6-pin prep. OEM replacement at SecurityParts.com.

The function code printed on the T Series lock body determines the chassis assembly. Every chassis is function-specific and cannot be substituted across function designations. The list below maps each Falcon T Series function code to its ANSI description and chassis part number.

T101 - Passage/Closet: Lever always unlocked from both sides. No key function. Chassis: A30761-000-00
T291 / T301 - Non-Keyed functions: Non-keyed configurations sharing the same chassis. Chassis: A30765-000-00
T351 / T561 - Storeroom / Classroom: Outside lever locked; inside lever always free egress. For T351 standard prep and T561 IC prep. Chassis: A30758-000-00 (standard) / A30758-001-00 (IC prep)
T381 - Dormitory / Exit: Passage from inside. Outside lever controlled by key or button. Chassis: A30767-000-00 / A30767-001-00
T411 - Entry / Office: Outside lever controlled by thumbturn inside or key outside. Chassis: A30769-000-00 / A30769-001-00
T501 - Asylum / Communicating: Both levers controlled by key from outside. Chassis: A30773-000-00 / A30773-001-00
T511 - Entrance / Apartment: Outside lever keyed; inside lever free. IC-compatible prep available. Chassis: A30756-000-00 / A30756-001-00
T521 - Classroom Security: Outside lever locked; inside lever locked; key controls from outside only. Chassis: A30748-000-00 / A30748-001-00
T581 - Storeroom Electrified / Fail-Safe: Electrified function with fail-safe release. Chassis: A30760-000-00 / A30760-001-00

The "-001-00" suffix on chassis part numbers indicates the IC (interchangeable core) prep version. Always confirm whether the installed lock runs standard cylinders or IC cores before ordering a chassis replacement.

For a broader comparison of how function codes work across cylindrical lock series, see the cylindrical lock parts guide.

Falcon T Series Lever Styles and Trim Parts

Falcon T Series Avalon Closed Lever (030740-000). One of seven lever styles available for the T Series. OEM replacement at SecurityParts.com.

The Falcon T Series is available in seven lever styles. Each lever style comes in two configurations: closed (no return, solid profile) and open (returns to door, with space below the lever). The lever style is a trim-level selection and does not affect the chassis or function code.

Avalon: Closed (030740-000) / Open (030740-001)
Boardwalk: Closed (Q330-430-BRK) / Open (Q330-431-BRK)
Broadway: Closed (Q330-430-BRW) / Open (Q330-431-BRW)
Dane: Closed (030742-000) / Open (030742-001)
Latitude: Outside Closed (Q330-430-LAT) / Open Exterior (Q330-431-LAT)
Longitude: Closed (Q330-430-LON) / Open (Q330-431-LON)
Quantum: Closed (030744-000)

When replacing a lever, always confirm both the lever style and the open/closed designation from the installed hardware. Closed and open levers are not interchangeable on the same door without also replacing the rose and the associated trim components.

Levers With Abrasive Coating

All Falcon T Series lever styles are available with an abrasive coating along the length of the lever. This coating is a tactile indicator for the visually impaired, identifying entrances to hazardous areas. If the installed lever has an abrasive surface, order the abrasive-coat variant to match. Mixing standard and abrasive-coat levers on a double door pair creates a compliance gap.

Latch, Strike, and Ancillary Parts

The T Series latch and strike components are standardized across function codes. Latch selection depends on door material and fire rating requirements, not on the function code of the lock.

Latch Assembly Options

14-010: 1-1/8" x 2-1/4" square corner spring latch - standard non-fire-rated applications
13-247: Square corner spring deadlatch - storeroom and higher-security functions
14-028: 1-1/8" x 2-1/4" square corner spring deadlatch - alternative deadlatch configuration
14-042: Anti-friction fire door latch - required on fire-rated door assemblies
39-030: Rabbeted latch and strike kit for rabbeted frame applications

Falcon T Series square corner spring latch (24074387). Standard latch for non-fire-rated T Series applications. OEM part at SecurityParts.com.

On fire-rated openings, always use the anti-friction fire door latch (14-042). Standard spring latches and deadlatches do not meet the closing force requirements for fire door assemblies under NFPA 80. For fire door hardware compliance requirements, see the commercial door fire rating guide.

Strike Options

10-013-118: Square corner T-strike (1-1/8" wide)
10-013-112: Square corner T-strike (1-1/2" wide)
10-016: Square corner fire door T-strike - for fire-rated door assemblies
10-025: ANSI strike, 1-1/4" x 4-7/8", no box - standard commercial strike
K510-066: Plastic strike box
005099-000-30: ANSI dust box, 1" deep

Cylinder and Backset Parts

43-005: Backset extension link - extends the standard 2-3/4" backset to a 5" backset for specific door configurations

All latch and strike parts are available on the T Series parts catalog at SecurityParts.com. Browse the full cylindrical locks catalog for related hardware across all brands and series.

How to Identify Your T Series Model Before Ordering Parts

Ordering the wrong part on a Falcon T Series lock is almost always the result of one of three identification errors: wrong function code, wrong cylinder prep, or wrong lever configuration. This process eliminates all three.

Find the function code on the lock body. The T Series model number (e.g., T351, T521) is stamped on the mechanism body near the packing nut at the base of the spindle, where the lever arm attaches. The function code determines the chassis. Never skip this step.
Identify the cylinder format. Standard-prep locks use Falcon's G keyway cylinder or a direct-mount competitor cylinder. IC-prep locks have a housing that accepts interchangeable cores. IC-prep chassis have the "-001-00" suffix in the part number. Confirm which format is installed before ordering any chassis.
Record the lever style and open/closed designation. Compare the installed lever profile against the seven T Series lever styles. Note whether it has a return (open) or no return (closed) and whether it has an abrasive coating.
Confirm the manufacture date if available. The manufacture date is stamped near the packing nut alongside the model number. T Series locks manufactured after July 2007 use the current service manual part numbers. Call 845-935-0301 if the part number from the service manual does not match the current catalog listing.

For guidance on identifying cylindrical lock models across Schlage ND, ALX, and Falcon T Series, see the cylindrical lock parts guide.

Falcon T Series vs Schlage ND Series: What Changes for Parts Ordering

These two series are frequently installed in the same building. Understanding where they differ prevents cross-series ordering errors on shared-building service calls.

Chassis Design

The Schlage ND Series uses a six-sided spindle. The Falcon T Series uses its own distinct spindle and chassis geometry. Chassis parts from one series cannot be substituted for the other.

Spring Mechanism

The Schlage ND Series uses a spring cage assembly as a separate replaceable component. The Falcon T Series uses a compression spring behind the cylinder that eliminates most lever sag without a separate spring cage. Spring cage replacements are one of the most common service items on Schlage ND Series locks. They are not a routine service item on the T Series.

Cylinder Compatibility

The Schlage ND Series is designed specifically for Schlage cylinders (conventional, FSIC, SFIC). Other manufacturer's cylinders can be used but may require specific tailpieces. The Falcon T Series accepts any manufacturer's cylinder without modification or special tailpieces as the default design specification. This is the most meaningful difference for buildings that run mixed key systems.

Lever Attachment

The Schlage ND Series uses captured screws. The T Series uses through-bolted rose inserts with wrought brass or bronze roses. Trim components from the two series are not interchangeable even though some lever styles appear visually similar for suiting purposes.

For a full comparison of all three commercial cylindrical lock series, see the Schlage ND, ALX, and Falcon T Series cylindrical lock parts guide. For the Schlage ND Series parts catalog, see the ND Series parts page. For Schlage ALX Series parts, see the ALX Series parts page.

OEM Replacement Parts for Falcon T Series at SecurityParts.com

SecurityParts.com stocks OEM Falcon T Series parts across chassis assemblies, lever styles, latch options, strike plates, and ancillary components. All parts are organized by function code and component type on the Falcon T Series parts catalog page.

Falcon T Series T521 Chassis Assembly (A30748-000-00). Classroom security function. OEM replacement at SecurityParts.com.

Using OEM parts on the T Series matters particularly for chassis assemblies. The T Series chassis dimensions and spring tolerances are specific to Falcon's manufacturing specifications. Aftermarket substitutes may pass visual inspection but fail under the torque loads the T Series is designed to handle. For a detailed comparison of OEM versus aftermarket options for commercial cylindrical locks, see the OEM vs aftermarket commercial door hardware guide.

Common parts ship same day. For pre-order compatibility confirmation on older T Series locks or cross-generation part number questions, call 845-935-0301. The full cylindrical lock catalog, including Schlage ND, ALX, and Falcon T Series, is at securityparts.com/cylindrical-locks.

For broad Schlage commercial hardware parts across all product lines, see securityparts.com/schlage-hardware. For a complete commercial hardware overview, see the commercial security hardware guide.

About the Author

This guide is published by the commercial door hardware team at SecurityParts.com, a supplier of OEM Falcon, Schlage, Von Duprin, LCN, and Detex parts since 2001. All function codes, chassis part numbers, and product specifications are verified against live SecurityParts.com product pages and official Falcon T Series documentation. For T Series part identification and same-day shipping on stocked components, call 845-935-0301 or visit the SecurityParts.com contact page.