Quick Answer

The Falcon Q330 is a Grade 2 cylindrical lock series used in light commercial, university, and institutional applications. Ordering the right Falcon Q330 parts requires knowing three things before opening any catalog:

• Core format first: FSIC (Full Size Interchangeable Core) levers use the -433- suffix. SFIC (Small Format Interchangeable Core) levers use -430- (closed) or -431- (open). Ordering the wrong core format is the most common Q330 parts error.
• Latch bolt series: D100 is the standard latch (Q330-175 square corner, Q330-177 radius corner). D200 is the heavy-duty version (Q330-253 adjustable, Q330-254 drive-in). They are not interchangeable.
• Spring cage kits: Q330-271 and Q330-270 are the two spring cage options. Both are labeled T-Series but fit Q330 trim housings.
• Key-in-lever cylinders: Q330-246 and Q330-238 are the 6-pin cylinders for standard keying. Q330-152 and Q330-154 are the SFIC-compatible cylinder variants.
• Q330 vs T-Series: Parts between the two series are not interchangeable. Confirm the model number before ordering.

Security Parts stocks all 34 Falcon Q330 parts. Call 845-935-0301 for pre-order compatibility support.

What the Falcon Q330 Series Is

The Falcon Q330 is a Grade 2 cylindrical lock designed for light commercial and institutional applications where Grade 1 performance is not required by the hardware specification. It is widely installed in universities, government office buildings, light commercial retail, and secondary-use corridors in healthcare and education facilities.

Grade 2 under ANSI A156.2 means the lock is tested to 250,000 cycles versus 1,000,000 cycles for Grade 1. For low-to-moderate traffic openings, the Q330 provides reliable performance at a lower initial cost than the Grade 1 T-Series.

The Q330 uses the same lever style names as the T-Series (Longitude, Latitude, Broadway, Boardwalk) but the part numbers and trim housings are different. This creates the most frequent ordering mistake in the Q330 parts catalog: buyers who know their lever style but order T-Series parts for a Q330 installation.

For a direct comparison of how cylindrical lock grades and series affect parts ordering, see the cylindrical lock parts guide and the Falcon T-Series cylindrical lock parts guide.

Key-in-Lever Cylinders for the Falcon Q330

Falcon Q330-246 key-in-lever cylinder 6-pin. View product page and order.

Four key-in-lever cylinder configurations are stocked for the Q330 series. Each is a 6-pin cylinder, but the keying system and trim compatibility differ:

• Q330-246: The standard 6-pin key-in-lever cylinder for Q330 installations with a conventional fixed keyway. Replace when the key operation is stiff, when the cylinder plug is worn, or when re-keying to a different conventional key system.
• Q330-238: An alternate conventional 6-pin key-in-lever cylinder with a different keyway profile. Used in installations keyed to a specific keyway family that the Q330-246 does not cover.
• Q330-152: The 6-pin cylinder compatible with SFIC (Small Format Interchangeable Core) trim on Q330 installations. Replace when the SFIC core operation is affected by cylinder wear.
• Q330-154: Alternate SFIC-compatible 6-pin cylinder with a different keyway configuration for installations with specific master key system requirements.

When replacing a key-in-lever cylinder, confirm whether the installation uses a conventional keyway or an interchangeable core format (FSIC or SFIC). Mixing core formats will prevent the new cylinder from seating correctly in the lever housing. For guidance on key systems and master keying, see the master key system design guide and the thumbturn cylinder guide.

Q330 Latch Bolts: D100 vs D200

The Q330 series uses two latch bolt families: D100 for standard applications and D200 for heavy-duty applications. They are not interchangeable. Before ordering a latch bolt replacement, confirm which series is installed by checking the latch body marking or the original hardware spec sheet.

D100 Series Adjustable Latch Bolts

The D100 latch bolt is the standard latch for most Q330 cylindrical lock installations. Two corner configurations are stocked:

• Q330-175: D100 adjustable bolt with a 1-inch face, square corner. Adjustable between 2-3/4-inch and 2-3/8-inch backset. Replace when the latch bolt does not retract fully or fails to spring back to the extended position after the door closes.
• Q330-177: D100 adjustable bolt with a 1-inch face, radius corner. Same backset adjustment as Q330-175. Required on doors where the mortise preparation has a radius corner rather than a square corner.
• Q330-041: H2 Series adjustable latch with 1-inch face. Used on Q330 installations specifying the H2 latch series. Confirm the latch series from the original order before substituting Q330-041 for a D100.

D200 Series Latch Bolts

Falcon Q330-253 D200 Series adjustable bolt. View product page and order.

The D200 latch bolt is the heavy-duty option for Q330 installations in higher-traffic or more demanding applications:

• Q330-253: D200 Series adjustable bolt. Field-adjustable backset. Replace when the standard D100 has been specified up to D200 during a renovation, or when the D200 bolt shows wear after extended service on a high-cycle door.
• Q330-254: D200 Series drive-in bolt (non-adjustable). Fixed backset installation. Replace when the drive-in bolt fails to engage the strike plate correctly due to wear or damage to the bolt head.

For strike plate compatibility with Q330 latch bolts, see the Schlage and Falcon strike plates, deadlatches, and latch bolt parts guide.

Q330 Spring Cage Kits

Falcon Q330-271 T-Series spring cage kit. View product page and order.

The spring cage kit is the highest-turnover Q330 replacement part on high-cycle installations. When the lever return becomes sluggish or the lever fails to return to the neutral position after being operated, the spring cage is the first component to inspect and replace.

Two spring cage kits are stocked for Q330 trim:

• Q330-271 T-Series Spring Cage Kit: The primary spring cage kit for Q330 trim housings. Note that the product is labeled "T Series" because the spring cage is dimensionally compatible with both Q330 and T-Series trim. For Q330 installations, this is the correct replacement.
• Q330-270 T-Series Spring Cage Kit: Alternate spring cage kit for Q330 trim. The Q330-270 applies to earlier-generation Q330 trim housings. If the Q330-271 does not seat correctly in the trim housing, the Q330-270 is the correct substitute.

On high-cycle openings (entry corridors, classroom doors, dormitory entrances), inspect the spring cage during scheduled maintenance. Replacing the spring cage before full failure is more cost-effective than waiting for lever failure, which can also damage the cam and spindle. For a maintenance schedule covering Q330 and other cylindrical lock hardware, see the commercial door hardware maintenance checklist.

Q330 Lever Trim: FSIC and SFIC Configurations

Falcon Q330-433-LON Longitude lever, FSIC. View product page and order.

Q330 lever trim is available in four lever styles across two core format configurations. Identifying the correct core format before ordering is the single most important step in any Q330 lever replacement.

FSIC Levers: -433- Part Number Series

FSIC (Full Size Interchangeable Core) levers are the correct choice when the installation uses a full-size interchangeable core key system. All FSIC Q330 levers carry the -433- designator in the part number:

• Q330-433-LON: Longitude lever, FSIC. A straight lever with minimal projection, and the most common Q330 lever style in educational and office applications.
• Q330-433-LAT: Latitude lever, FSIC. An ergonomic lever with a curved return, ADA-compliant without requiring additional accessories.
• Q330-433-BRW: Broadway lever, FSIC. A wider, more assertive lever profile used in high-visibility entrances and public-facing commercial applications.

SFIC Levers: -430- and -431- Part Number Series

SFIC (Small Format Interchangeable Core) levers are for installations using the smaller figure-8 format interchangeable core system. Q330 SFIC levers split into two sub-configurations: -430- for closed (outside-facing) levers and -431- for open (inside-facing) levers.

• Q330-430-LON: Longitude lever, SFIC, closed/outside. Replace the outside lever on SFIC-keyed Q330 entrances where the exterior lever is worn or damaged.
• Q330-431-LON: Longitude lever, SFIC, open/inside. The inside lever on SFIC-keyed Q330 installations.
• Q330-430-LAT: Latitude lever, SFIC, closed/outside.
• Q330-431-LAT: Latitude lever, SFIC, open/inside.
• Q330-430-BRW: Broadway lever, SFIC, closed/outside.
• Q330-431-BRW: Broadway lever, SFIC, open/inside.
• Q330-430-BRK: Boardwalk lever, SFIC, closed/outside.
• Q330-431-BRK: Boardwalk lever, SFIC, open/inside.

For guidance on function codes and which lever configuration applies to storeroom, classroom, office, and entrance functions on the Q330, see the commercial lock function codes guide.

How to Identify Your Q330 Model Before Ordering

Confirming the installed model before placing a Q330 parts order prevents the most common wrong-part returns. Follow these steps in order:

1. Find the model number. The Q330 model number is stamped on the face of the cylindrical chassis, visible when the lever trim is removed. It begins with "Q330" followed by the function code and lever suffix.
2. Read the function code. The function code tells you whether the lock is storeroom, classroom, office, or entrance. The function determines which lever configuration is correct. See the commercial lock function codes guide for the complete reference.
3. Identify the core format. Look at the lever part number suffix if the trim is still installed: -433- = FSIC; -430-/-431- = SFIC. If the lever has been removed and no part number is visible, look at the core housing in the lever body: FSIC cores are larger; SFIC cores are smaller with a figure-8 profile.
4. Identify the latch series. Look at the latch body marking: D100 or D200. If no marking is visible, measure the latch face: D100 and D200 are both 1-inch face, but the bolt body dimensions differ when viewed from the edge.
5. Order from the Security Parts Q330 catalog. Use the confirmed model number, core format, and latch series to identify the exact replacement. Every Q330 part page includes the full part description and compatibility information.

For guidance on when OEM parts are required versus when aftermarket substitutes are acceptable on Falcon cylindrical locks, see the OEM vs aftermarket commercial door hardware guide.

Q330 Part Numbers at a Glance

Source Falcon Q330 Parts at Security Parts

Security Parts stocks the complete Falcon Q330 parts catalog: all 34 components across key-in-lever cylinders, D100 and D200 latch bolts, spring cage kits, FSIC lever trim, and SFIC lever trim in all four lever styles. The catalog is organized by part number with full compatibility information on every product page.

For the full Falcon hardware catalog, start at the Falcon brand hub. For Falcon Grade 1 cylindrical lock parts, see the Falcon T-Series cylindrical lock parts guide. For Falcon exit device parts, see the Falcon 19, 24, and 25 Series exit device parts guide.

For guidance on cylindrical lock grading, function codes, and hardware specifications by building type, see:

• Commercial lock function codes guide
• ANSI/BHMA door hardware standards guide
• Mortise locks vs cylindrical locks guide
• Government buildings guide
• Universities and colleges guide
• Commercial door hardware replacement and repair guide

Same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support on Falcon Q330 parts before your order is placed.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and access control integrators since 2001. Security Parts stocks the complete Falcon Q330 parts catalog across all cylinder, latch bolt, spring cage, and lever trim configurations, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301.