Name: BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever
Brand: BEST
SKU: 9K30Y14CSTK626
Price: 427.22 USD
Availability: InStock

Product Overview
FAQs

BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever

Premium Commercial-Grade Cylindrical Lock Solution

The BEST 9K Series cylindrical lock delivers professional-grade security with Grade 1 BHMA certification for demanding commercial applications. This non-keyed exit lock features a 2-3/4" backset, 9/16" latch throw, and heavy-duty construction designed for 1-3/4" to 2-1/4" doors. Built with corrosion-treated steel chassis and brass components, the 9K Series combines exceptional durability with smooth operation for high-traffic environments.

Professional Features & Benefits

Grade 1 BHMA Certification: Listed by BHMA for A156.2, Series 4000, Grade 1 providing the highest level of commercial lock performance and durability.
Heavy-Duty Construction: Corrosion-treated steel chassis with brass latch components and zinc alloy lever handles engineered for demanding commercial use.
Standard Door Compatibility: 2-3/4" backset with 9/16" latch throw designed for 1-3/4" to 2-1/4" door thickness with spacers available for 1-3/8" doors.
Attack-Resistant Design: Rose locking pin and assembly design offers exceptional torque resistance, preventing twisting, bending, or breaking under attack while maintaining key access functionality.
Through-Bolt Mounting: Strong through-bolt mounting studs with 5/16" diameter holes at 12 and 6 o'clock positions provide superior torque resistance and security.
UL Fire Rating: Listed by Underwriters Laboratories for use on 3-hour A label single or double swinging doors for fire-rated applications.
ADA Compliance: Design and operation meets ANSI A117.1 section 404.2.6 requirements for accessibility in commercial buildings.
10-Year Manufacturer Warranty: Comprehensive warranty coverage provides long-term protection and confidence in commercial installations.

Technical Specifications

Backset (Distance): 2-3/4"
Commercial/Residential: Commercial
Department: Door Hardware
Door Hand Direction: Non-Handed
Duty Level: Heavy Duty
Electronic: No
Function Description: Latch operated by Rotating the inside lever. Inside lever is always unlocked and cannot be locked.
Grade: Grade 1
Handle Type: Lever
Keyed: No
Keyed Function: Non-Keyed
Lock Function: Exit Only
Lock Type: Cylindrical
Product Attribute: Cylindrical Locks
Product Category: Mechanical Locks
Product Function: Exit
Product Group: Mechanical Locks
Product Model: Y
Product Subgroup: Bored Locksets
Product Substrate: Corrosion-Treated Steel
Product Type: Leversets
Series: 9K Series
Standard Latch: 9/16" Throw
Standard Strike: 2-3/4" x 1-1/8" with curved lip and box
Subcategory: Cylindrical Locks
Warranty: 10 Year

Installation & Operation

Review manufacturer specifications and verify door preparation requirements including 1-3/4" to 2-1/4" door thickness, 2-3/4" backset, and non-handed operation compatibility.
Use manufacturer-provided templates to mark mounting hole locations accurately including standard ANSI A115.2 preparation plus two additional 5/16" diameter through-bolt holes at 12 and 6 o'clock positions.
Prepare door by drilling required holes including 2-1/8" diameter chassis hole and routing as specified in manufacturer instructions. Use available drill jig for through-bolt hole accuracy.
Install all mounting hardware including through-bolt studs and secure the lock to door per manufacturer torque specifications for maximum attack resistance.
Adjust lever operation for smooth function and verify 9/16" latch throw engagement with strike plate alignment throughout full range of motion.
Test exit function to verify inside lever operation and proper latching. Install appropriate strike (STK, S3, or S3-7/8) based on door and frame requirements. 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

Anti-Microbial Option

The 9K Series is available with BEST UltraShield antimicrobial protected coating (finish 626AM) that inhibits the growth of bacteria and other microbes on hardware surfaces. This option is recommended for healthcare, elderly care, education, transportation, food service, and hospitality applications where product cleanliness is a high priority.

Why Choose BEST Quality?

BEST 9K Series cylindrical locks deliver professional-grade reliability with corrosion-treated steel construction and Grade 1 BHMA certification for the most demanding commercial applications. The 10-year manufacturer warranty and UL fire rating demonstrate BEST's commitment to quality and performance. Engineered with attack-resistant features and heavy-duty through-bolt mounting, the 9K Series provides dependable security where reliable operation is essential.

Manufacturer Resources

9K Series Catalog

Service Manual for 9K Series

Product Specs

Series:: 9K Series
Subcategory:: Cylindrical Locks
Grade:: Grade 1
Duty Level:: Heavy Duty
Handle Type:: Lever
Keyed Function:: Non-Keyed
Warranty:: 10 Year
Standard Latch:: 9/16" Throw
Standard Strike:: 2-3/4" x 1-1/8" with curved lip and box
Product Group:: Mechanical Locks
Product Subgroup:: Bored Locksets
Product Type:: Leversets
Keyed:: No
Electronic:: No
Commercial/Residential:: Commercial
Function Description:: Latch operated by Rotating the inside lever. Inside lever is always unlocked and cannot be locked.
Lock Type:: Cylindrical
Lock Function:: Exit Only
Product Attribute:: Cylindrical Locks
Product Model:: Y
Product Function:: Exit
Door Hand Direction:: Non-Handed
Product Category:: Mechanical Locks
Product Substrate:: Corrosion-Treated Steel
Backset (Distance):: 2-3/4"
Department:: Door Hardware

BEST 9K30Y14CSTK626 – Frequently Asked Questions

1) Will the BEST 9K exit lock fit a 1-3/4 inch commercial door?

Yes. The 9K Series cylindrical lock is built for 1-3/4 inch through 2-1/4 inch doors, with spacers available if you're putting it on a 1-3/8 inch door. Door prep is standard ANSI A115.2 with a 2-1/8 inch chassis bore, plus two extra 5/16 inch through-bolt holes at the 12 and 6 o'clock positions. If your doors are already bored for a standard cylindrical lockset, the only added work is those two through-bolt holes, and BEST offers a drill jig to keep them accurate.

2) What does the BEST 9K exit function (Y) lock actually do, and can anyone get in from outside?

Exit only. The latch retracts by rotating the inside lever, and that inside lever is always unlocked and cannot be locked. There's no key and no outside operation, so it's a one-way door: free egress out, no entry back in. Use it on stair discharge doors, back-of-house exits, and mechanical rooms where you want people out but never in. If you need people to come back through with a key, you want a keyed function like storeroom or entry instead, not the Y.

3) Which backset do I order for the BEST 9K, and does it matter for a glass-front or wide-rail door?

Three backsets are offered on the 9K exit lock: 2-3/4 inch, 3-3/4 inch, and 5 inch. 2-3/4 inch is the standard commercial backset and it's what the base spec is built around. The 3-3/4 and 5 inch options exist for doors with wide stiles or rails where the lock has to sit farther in from the edge, such as heavy wood entrance doors. Measure from the door edge to the center of the existing 2-1/8 inch bore and match it, since the backset is fixed per lock, not adjustable in the field.

4) Will the BEST 9K latch into the strike that's already in my frame?

The 9K's standard latch has a 9/16 inch throw and ships against a 2-3/4 by 1-1/8 inch strike with a curved lip and box, which is the common ANSI T-strike opening in a hollow metal frame. Two strike options are orderable: the STK 2-3/4 inch ANSI strike and the S3 4-7/8 inch ANSI strike. If your frames are prepped for a 4-7/8 inch full lip strike, order the S3 and you drop into the existing cutout. If they're prepped for the shorter 2-3/4 inch strike, order the STK. A 9/16 inch throw needs the strike lip properly aligned to latch reliably, so match the strike to the frame prep rather than shimming.

5) Can I use the BEST 9K exit lock on a fire-rated stairwell door?

Yes. The 9K Series is Listed by Underwriters Laboratories for use on 3-hour A label single or double swinging doors. It's also listed by BHMA to A156.2, Series 4000, Grade 1, and the lever design and operation meet ANSI A117.1 section 404.2.6 for accessibility. That combination is what most stairwell and egress door specs call for.

6) What's the difference between an exit-only lock and a passage lever, and which one do I need?

A passage lever works from both sides and never locks, so people can walk through in either direction. The 9K exit function is one-directional: the inside lever always retracts the latch, the outside has no operation, and the inside lever cannot be locked. Pick exit-only when the door must stay secure from the outside but never trap anyone inside. Pick passage when you just need a latched door with no security, in which case a Grade 1 passage set such as the Falcon K101 or the Corbin Russwin CL3110 covers it, or the Grade 2 Falcon B101 for lighter interior traffic.

7) I have 2-1/4 inch thick doors. Which Grade 1 cylindrical levers actually cover that?

The 9K Series covers 1-3/4 to 2-1/4 inch doors, which is a wider range than most cylindrical locks reach. Among the other Grade 1 heavy duty options, the Falcon K101 passage lock is listed for 1-3/8 to 2-1/4 inches. The Corbin Russwin CL3110 and the Design Hardware X75 top out lower, at 1-3/4 to 2 inches and 1-3/4 inches respectively, so those will not make a 2-1/4 inch door. If your doors are that thick, confirm the thickness at the lock edge, not the stile face, before ordering.

8) What is the closest Grade 1 non-keyed cylindrical lever lock to the BEST 9K exit lock?

The Falcon K101 is the nearest peer: a Grade 1 heavy duty cylindrical lever lock in passage/hall/closet function, non-handed, fire rated, and fitted to doors 1-3/8 inch through 2-1/4 inch. Like the BEST 9K non-keyed exit lock it is Grade 1, heavy duty, and takes no cylinder. The difference is the function itself - the 9K exit lock latches and is retracted by rotating the inside lever, with the inside lever always unlocked, while the K101 passage function operates from both sides.

9) Which lever lock should I use if I need both sides of the door to operate instead of exit only?

Choose a passage function lock. In Grade 1 the options are the Falcon K101 heavy duty non-handed passage lever, the Falcon T101 heavy duty passage lever, the Corbin Russwin CL3110 vandal resistant passage lever for 1-3/4 inch to 2 inch doors, and the Design Hardware X75 passage lever for 1-3/4 inch doors. The BEST 9K in exit function is built so the latch is operated by rotating the inside lever and that inside lever cannot be locked, which is what makes it an egress-side device rather than a two-sided passage set.

10) Is a Grade 2 lever lock an acceptable substitute for the BEST 9K on a commercial door?

It depends on what the specification calls for. The BEST 9K is Grade 1 and heavy duty. Grade 2 alternatives in lever form include the Falcon B101 medium duty non-handed passage lever, the Hager 2510 passage lever for 1-3/8 inch to 2 inch doors, and the Design Hardware J75 passage lever for 1-3/4 inch doors. Those carry a Grade 2 rating rather than Grade 1, so on an opening where the drawing or facility standard states ANSI/BHMA Grade 1 they will not satisfy it.

11) What do I use instead of the BEST 9K non-keyed exit lock if the opening needs a key?

A non-keyed exit lock takes no cylinder at all, so a keyed opening needs a keyed lockset. Keyed Grade 1 lever options include the Dexter C1000 entry/office lever, the Dexter C1000 classroom lever, and the Dexter C1000 classroom security lever, all clutching and keyed for doors 1-3/8 inch to 1-3/4 inch. The Dexter C1000 asylum lever is Grade 1 and fits 1-3/8 inch to 2 inch doors. Confirm the keyway and keying requirement before ordering, since the 9K exit lock carries none.

12) Which alternatives carry a fire rating for a labeled opening?

The BEST 9K is listed by Underwriters Laboratories for 3-hour A label single or double swinging doors. Peers that carry a fire rating include the Falcon K101 Grade 1 passage lever, the Corbin Russwin CL3110 Grade 1 vandal resistant passage lever for 1-3/4 inch to 2 inch doors, and the Arrow MK02-TA privacy lock. On a labeled opening, verify the substitute's rating matches the label hours before the frame is signed off.

13) Do I have to specify handing when ordering the BEST 9K lever lock?

No handing to specify. The 9K exit lock is non-handed, so the same lock works on a left or right hand door. That's useful when you're stocking spares for a building: one part number covers every opening regardless of swing, and a maintenance tech can pull one off the shelf without checking the door first.

14) What lever and rose choices does the BEST 9K come in, and how do I match the other doors in my building?

Three lever styles: Contour with Angle Return, Curved with Return, and Curved without Return. Two roses: the C rose at 3 inch convex and the D rose at 3-1/2 inch convex. Finishes run twelve deep, from 605 Bright Brass, 606 Satin Brass, 611 Bright Bronze, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed, 618 Bright Nickel, 619 Satin Nickel, 622 Matte Black, 625 Bright Chrome and 626 Satin Chrome through to 690 Statuary Dark Bronze. To match existing 9K openings, copy the lever style, rose diameter and finish code off one of the installed locks; the larger D rose also covers more of the door face if you're replacing a lock that left a bigger footprint.

15) How does the BEST 9K hold up on a high-traffic door that gets kicked and yanked?

The chassis is corrosion-treated steel with brass latch components and zinc alloy levers, rated heavy duty and Grade 1. The security comes from two places: a rose locking pin and assembly design that resists twisting, bending and breaking under attack, and through-bolt mounting studs that tie the two sides of the lock together through 5/16 inch holes at 12 and 6 o'clock. Through-bolting is what keeps the trim from being torqued off the door, which is the usual failure on abused openings where a lock is only screwed to the face.

16) What are the Grade 1 alternatives to the BEST 9K if I need a keyed function on the same door prep?

The 9K exit lock is non-keyed by design, so if the opening needs key access from outside you're changing function, not just brand. Grade 1 cylindrical options with keyed functions include the Dexter C1000 Series in Classroom, Classroom Security, Entry/Office and Asylum functions, and the Corbin Russwin CL33903 if the door needs an electrified fail safe lever at 12VAC/DC. The Dexter C1000 Entry/Office and Classroom versions are listed for 1-3/8 to 1-3/4 inch doors, so check your door thickness against that before swapping, since the 9K covers a thicker range at 1-3/4 to 2-1/4 inches.

17) What else do I need to order to finish installing a BEST 9K exit lock?

Beyond the lock itself you pick the strike with the order, either STK for a 2-3/4 inch ANSI frame prep or S3 for a 4-7/8 inch ANSI prep. Through-bolt studs come as part of the mounting hardware. On 1-3/8 inch doors you need spacers. For the two 5/16 inch through-bolt holes at 12 and 6 o'clock, BEST offers a drill jig, which is worth having if you're doing more than a couple of doors, because those holes have to line up with the chassis studs. Templates for hole layout are supplied with the lock.

18) For a healthcare corridor, does any alternative offer an antimicrobial finish like the BEST 9K?

The 9K non-keyed exit lock offers finish 626AM, a satin chrome with BEST UltraShield antimicrobial protected coating that inhibits growth of bacteria and other microbes on hardware surfaces, recommended for healthcare, elderly care, education, transportation, food service, and hospitality. If the door instead needs a keyed institutional function, the Dexter C1000 asylum lever is Grade 1 for doors 1-3/8 inch to 2 inch and the Arrow MK33-BD-CS is a heavy duty asylum knob lock, both selected on function rather than coating.

19) Will a dummy lever work in place of the BEST 9K exit lock?

No. A dummy lever is a fixed trim with no latch mechanism behind it - the Accentra 455LN Augusta is a Grade 1 single dummy cylindrical lever, and the Callan Bentley 5051 is a Grade 2 dummy lever. The BEST 9K exit lock has a working latch with a 9/16 inch throw that is retracted by rotating the inside lever, so it actually secures the door. Dummy trim is for a door held by other means, such as a ball catch or a leaf that does not latch.

20) I need a storeroom function lever instead of exit only - what are the options?

Storeroom function keeps the outside lever locked at all times while free egress stays available from inside. The Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt for doors 1-3/8 inch to 1-3/4 inch, and the Hager 2580 is a Grade 2 storeroom lever with the Withnell design for doors 1-3/8 inch to 2 inch. The BEST 9K in exit function has no outside operating trim to lock, so on a storeroom opening a storeroom lockset is the correct call.

21) What is the difference between the BEST 9K exit lock and a keypad or electronic lever lock?

The 9K exit lock is a mechanical, non-electronic lockset. The keypad alternatives operate on a code instead: the Lockey 1150 heavy duty mechanical keypad lever set with double combination fits doors 1-1/8 inch to 2 inch, the Lockey 2835DC double combination keyless lever lock in passage function fits 1-3/16 inch to 2 inch, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. For a wired opening the Corbin Russwin CL33903 is a Grade 1 electrified fail safe lever at 12VAC/DC for 1-3/4 inch to 2 inch doors. Choose by whether the door needs credentialed entry or only free egress.

22) Is a knob lockset an equivalent to the BEST 9K lever lock for an ADA opening?

No. The 9K is a lever handle set whose design and operation meets ANSI A117.1 section 404.2.6 for accessibility. The knob peers turn rather than push down: the Arrow MK02-TA is a privacy tudor knob lock, the Arrow HK11 is a turn-pushbutton entrance ball knob lock for doors 1-3/8 inch to 1-3/4 inch, and the Arrow MK33-BD-CS is a heavy duty asylum ball knob lock with a conventional Schlage C keyway cylinder. On an opening where accessible operation is required, the lever is the correct form.

23) Can I put a residential grade lever on a high traffic commercial door instead?

The BEST 9K is a commercial, heavy duty, Grade 1 lockset. The lighter alternatives sit at Grade 3: the Kwikset 200BRNL Breton passage lever and the Kwikset 300BRNL Breton privacy lever both fit 1-3/8 inch to 1-3/4 inch doors, the Cal-Royal AUS00 is a Grade 3 entrance/office lever with a solid brass forged body for 1-3/8 inch to 1-3/4 inch doors, and the Callan Asheville is a Grade 3 passage leverset. Those are built to a lighter cycle rating and a narrower door range than the 9K.

24) What lever trim goes with an exit device rather than a standalone cylindrical lock?

An exit device needs trim made for it, not a cylindrical lockset. The Corbin Russwin 585F715 is a Grade 1 lock lever for the ED8000 pushpad exit device, drawn from the CL3300 cylindrical lock series and rated for 1-3/4 inch to 2 inch doors, and the Imperial USA ED-EL500HD is a heavy duty escutcheon lever trim in entry function. The BEST 9K exit lock is a cylindrical lockset that mounts in a standard ANSI A115.2 door prep with a 2-1/8 inch chassis hole, so it goes into the door itself rather than onto a pushpad device.

25) If I need a privacy function for a restroom instead of an exit lock, what changes?

Privacy function adds an inside locking means, which the BEST 9K exit lock does not have - its inside lever is always unlocked and cannot be locked. Privacy alternatives include the Hager 2540 with the Withnell lever for doors 1-3/8 inch to 2 inch, the Arrow MK02-TA privacy knob lock, the Baldwin Estate 5103 privacy lever with the 5048 rose, and the Kwikset 300BRNL Breton privacy lever for 1-3/8 inch to 1-3/4 inch doors.

26) Do any comparable levers offer the same 2-3/4 inch backset range flexibility?

The BEST 9K non-keyed exit lock is offered in 2-3/4 inch, 3-3/4 inch and 5 inch backsets, with 2-3/4 inch as the standard. Among the peers, the Cal-Royal AG03 classroom lever is built at a 2-3/4 inch backset and the Cal-Royal AG00 entrance lever at 2-3/8 inch, while the Lockey 1150S keypad lever set has an adjustable backset. Match the backset to the existing bore before substituting, since a 3-3/4 inch or 5 inch opening will not accept a fixed 2-3/8 inch chassis.

27) Is the BEST 9K exit lock electronic or does it need power or wiring?

Purely mechanical. The 9K exit lock has no electronics, no wiring, and no power requirement, so it keeps working through a power failure and needs no low voltage run to the door. If the opening genuinely needs to be controlled by an access system, an electrified cylindrical lever like the Corbin Russwin CL33903 running 12VAC/DC is the direction to go instead, and that changes both the door prep and the frame wiring.

How fast can I get the BEST 9K30Y14CSTK626 delivered?

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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 BEST 9K30Y14CSTK626 come with a warranty?

Absolutely. The BEST 9K30Y14CSTK626 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 BEST 9K30Y14CSTK626?

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BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever

BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever