Schlage Residential FC21 Plymo...
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Schlage Residential Schlage Residential FC21 - Plymouth Knob Passage and Privacy Latch - Grade 2 Cylindrical Non-Keyed Lock SCR-FC21-NONKEYED-PLY

Schlage Residential FC21 Plymouth Knob Passage and Privacy Cylindrical Lock Grade 2

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Model: FC21 PLY 626 KIN
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$100.00
$74.99
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Schlage Residential FC21 Plymouth Knob Passage/Privacy Cylindrical Lock Grade 2

Versatile Residential Door Lock Solution

The Schlage Residential FC21 Plymouth Knob combines passage and privacy functions in a single Grade 2 cylindrical lock designed for residential applications. This dual-function lock operates as passage by default and converts to privacy with the interior pushbutton, accommodating door thicknesses from 1-3/8" to 1-3/4" with dual backset options for 2-3/8" or 2-3/4" installations. ANSI/BHMA A156.2-2017 Grade 2 certified construction ensures reliable performance for residential use.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates 1-3/8" to 1-3/4" doors with dual backset latches fitting either 2-3/8" or 2-3/4" backsets for versatile installation options.
  • Dual Function Operation: Passage is default function with privacy pushbutton conversion on interior side, plus emergency unlock capability from outside with small tool.
  • Grade 2 Certification: ANSI/BHMA A156.2-2017 Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA certified for reliable residential performance.
  • Easy Installation: Features simple 3-step installation process requiring only a screwdriver, with universal latch and dual backset compatibility.
  • Professional Hardware Components: Includes 1" x 2-1/4" latch with 1/4" radius corner faceplate, 1-5/8" x 2-1/4" radius corner full lip strike, and circular drive-in latch.
  • Fire Door Compatible: Available UL Listed for 90 minute fire door applications when required for code compliance.
  • Manufacturer Warranty: 10 Year warranty coverage for added confidence and long-term protection.
  • Stainless Steel Construction: Durable stainless steel substrate provides corrosion resistance and long-lasting performance in residential environments.

Standard Features

Certification:ANSI/BHMA A156.2-2017 Grade 2
ANSI/BHMA A156.39-2015 Residential Grade AAA
Available UL Listed for 90 minute fire door
Latch: 1"x 2-1/4", 1/4" radius corner faceplate, 1" housing diameter, 1/2" throw, circular drive-in included, universal latch
Strike: 1-5/8" x 2-1/4" radius corner, full lip
Backset: Dual backset latches, fits either 2-3/8" or 2-3/4" backsets
Cylinder: 5-Pin, C keyway, keyed alike (KA4)
Door Range: 1-3/8" – 1-3/4"
Keys: Two per lock, 5-pin, C section

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/8" and 1-3/4", and select appropriate backset (2-3/8" or 2-3/4").
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for the cylindrical lock installation.
  3. Prepare door by drilling required holes per manufacturer specifications, ensuring proper alignment for smooth operation.
  4. Install the universal latch and strike hardware, securing all components per manufacturer torque specifications.
  5. Mount the lock assembly and test both passage and privacy functions, verifying the interior pushbutton converts from passage to privacy mode properly.
  6. Test emergency unlock function from exterior side and ensure interior knob releases privacy pushbutton as designed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Interior Doors
  • Bedroom and Bathroom Privacy
  • Hall and Closet Passage
  • Multi-Family Housing Units
  • Apartment and Condominium Buildings
  • Single-Family Home Construction
  • Residential Renovation Projects

Why Choose Schlage Residential Quality?

Schlage Residential FC21 locks deliver professional-grade reliability with stainless steel construction and Grade 2 ANSI/BHMA certification for demanding residential applications. The 10 Year warranty provides long-term protection and confidence in performance. Engineered with dual-function versatility and easy 3-step installation, this lock combines convenience with dependable security for residential door hardware needs.

Manufacturer Resources

Product Specs

Series:
F Series
Subcategory:
Bored Locksets
Grade:
Grade 2
Warranty:
10 Year
Standard Strike:
10-027: Full Lip Radius Strike, 2-1/4" x 1-5/8"
Standard Latch:
16-600: Spring Latch, Dual Option (Round, Drive-in)
Keyed Function:
Non-Keyed
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Keyed:
No
Electronic:
No
Commercial/Residential:
Residential
Function Description:
Passage is default function; Insert privacy pushbutton on interior side of lock to convert to privacy; Can be opened from outside with small emergency unlock too
Lock Type:
Cylindrical
Product Type:
Leversets
Lock Function:
Passage/Privacy
Handle Design:
Plymouth Knob
Handle Type:
Knob
Product Attribute:
Cylindrical Locks
Product Model:
FC21
Product Function:
Passage/Hall/Closet
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 1-3/4"
Product Category:
Mechanical Locks
Product Substrate:
Stainless Steel
Department:
Door Hardware

Schlage Residential FC21 PLY 626 KIN – Frequently Asked Questions

1) Will the Schlage FC21 Plymouth knob fit a 1-3/8 inch interior door?
The FC21 Plymouth knob covers a door thickness range of 1-3/8 inches to 1-3/4 inches, so an older 1-3/8 inch interior door and a standard 1-3/4 inch door both take the same lock with no spacer or extension kit. It ships with a dual backset latch that sets to either 2-3/8 or 2-3/4 inches, so the existing bore centerline on the door does not have to be re-drilled either.
2) Is the Schlage FC21 a passage knob or a privacy knob for a bathroom?
It is both, decided at install. The FC21 Plymouth knob works as passage out of the box, and you insert the privacy pushbutton on the interior side to convert it to privacy for a bedroom or bath. Locked from inside, it still opens from the corridor side with a small emergency unlock tool. That means one part number covers the hall and closet doors and the bed and bath doors on the same unit.
3) Does the Schlage FC21 knob need to be ordered left hand or right hand?
No handing to specify. The FC21 is non-handed, so the same lock goes on a left or right swinging door and the latch does not have to be reversed by hand. For a property manager buying a carton for a building turn, that removes the most common ordering mistake on knob sets.
4) Will the FC21 latch into the strike plate already in my door frame?
Usually yes on a residential frame. The FC21 comes with a 1-5/8 x 2-1/4 inch full lip radius corner strike (Schlage 10-027) and a 1/2 inch latch throw, which is the standard residential cutout. If your frame has a square corner strike mortise instead of a radius one, the supplied strike will not drop in and you will need a square corner strike or a filed mortise. The latch itself is 1 x 2-1/4 inch with a 1/4 inch radius corner faceplate and a 1 inch housing diameter, and a circular drive-in latch is included for frames prepped without a faceplate mortise.
5) Does the Schlage FC21 knob take a key?
No cylinder in it. The FC21 is a non-keyed lock, so there is no keyway, no key, and nothing to key alike into a building system. It is for interior openings only, hall, closet, bedroom and bath. If you need a keyed exterior or unit entry knob, that is a different function entirely, such as the Arrow HK11 turn-pushbutton entrance knob for 1-3/8 to 1-3/4 inch doors.
6) What is the closest equivalent to the Schlage FC21 Plymouth knob if the job calls for a lever instead of a knob?
The Schlage FC21 Plymouth is a Grade 2 non-keyed cylindrical lock in passage/hall/closet function with a knob handle. For the same Grade 2 passage/hall/closet function in a lever, the Falcon B101 is a Grade 2 cylindrical passage lever lock with a non-handed design, and the Accentra 5301LN Augusta is a Grade 2 cylindrical lever in passage/closet function. Both change the handle style from knob to lever while holding the same grade and function, which matters where an ADA-style lever is specified for the opening.
7) Which knob lock should I use for a bathroom or bedroom door that needs privacy only, not passage?
The Schlage FC21 Plymouth ships as passage by default and converts to privacy when the interior pushbutton is inserted, so one part covers both. If a dedicated privacy knob is preferred, the Arrow MK02-TA is a non-keyed privacy/bed/bath cylindrical lock with a Tudor knob, fire rated, for doors 1-3/4 inch to 2 inch. The Arrow fits thicker doors than the FC21, which covers 1-3/8 inch to 1-3/4 inch.
8) The doors are 2 inches thick. What passage lock works there instead of the Plymouth knob?
The Schlage FC21 Plymouth covers doors from 1-3/8 inch to 1-3/4 inch. For a 2 inch door in passage/hall/closet function, the Hager 2510 passage cylindrical lever lock is Grade 2 and covers 1-3/8 inch to 2 inch, the Corbin Russwin CL3110 passage/closet lever is Grade 1, fire rated, and covers 1-3/4 inch to 2 inch, and the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock covering 1-3/8 inch to 2-1/4 inch. All three are levers rather than knobs.
9) We need a heavier duty passage lock than Grade 2 for a high traffic corridor. What steps up from the FC21?
The Schlage FC21 Plymouth is certified Grade 2 for residential use. Where a heavy duty Grade 1 passage lock is required, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers and a fire rating, the Falcon T101 is a Grade 1 heavy duty passage lever with pressure release technology, and the Design Hardware X75 is a Grade 1 passage lever lockset for 1-3/4 inch doors. Those are lever trims; the FC21 is a knob.
10) Can I use a dummy trim in place of the FC21 Plymouth on a closet door?
No. A dummy has no latch and no operating function, so it will not hold a closet door shut the way the FC21 Plymouth does with its passage function and spring latch. Dummy trims such as the BEST 7KC Series 1DT single dummy, the BEST 9K Series 1DT Grade 1 single dummy, the Callan Bentley Grade 2 dummy lever, and the Baldwin Estate 5103 half dummy in left or right hand are for pull-only leaves and inactive doors. Use one of those only alongside a latching lock on the active leaf.
11) The unit door needs a key, not a pushbutton. What replaces the FC21 Plymouth?
The Schlage FC21 Plymouth is non-keyed, so it will not secure an entry door. For a keyed opening on doors of the same 1-3/8 inch to 1-3/4 inch range, the Arrow HK11-BB is an entrance function cylindrical lock with a ball knob and conventional cylinder, and the Cal-Royal AG00 is an entrance lever with a 6-pin Schlage C keyway keyed different on a 2-3/8 inch backset. The Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt over the same door range where the door should stay locked at all times.
12) What ANSI grade is the Schlage FC21 Plymouth knob rated to?
ANSI/BHMA A156.2-2017 Grade 2, plus A156.39-2015 Residential Grade AAA. Grade 2 is the middle commercial tier, which puts it above a typical builder-grade residential knob for apartment turns and multi-family corridors, though a heavy traffic commercial opening is normally specified Grade 1.
13) I need lever handles instead of knobs for an accessible unit. What passage lockset should I use?
The FC21 is a Plymouth knob, so it will not satisfy a lever requirement. For a Grade 2 passage lever in the same door thickness class, the Cal-Royal AG series and Hager 2510 Withnell lever cover 1-3/8 to 1-3/4 and 1-3/8 to 2 inch doors respectively. If the opening is commercial and needs Grade 1, the Falcon K101 passage lever handles 1-3/8 to 2-1/4 inch doors and carries a fire rating. Kwikset 200BRNL Breton is the residential Grade 3 passage lever for 1-3/8 to 1-3/4 inch doors.
14) Can I use the same Schlage FC21 knob on every interior door in an apartment unit?
That is what it is built for. One non-handed knob, adjustable to either standard backset, covering 1-3/8 to 1-3/4 inch doors, and switchable between passage and privacy with the interior pushbutton. Stock a single part number and finish, then decide door by door on site whether the bedroom and bath get the privacy button and the hall and closet stay passage. Three rose designs are offered, Camelot, Collins and Kinsler, so pick one to keep a unit looking uniform.
15) What do I need to buy besides the FC21 knob to finish the door?
Nothing extra for a standard prep. The FC21 ships with the 16-600 dual option spring latch (round faceplate or drive-in, both in the box), the 10-027 full lip radius strike, and the privacy pushbutton for converting the function. Installation is a screwdriver job on a bored door. What is not included is the door prep itself, so a blank door still needs the 2-1/8 inch cross bore and edge bore drilled to template.
16) Someone locked themselves in the bathroom. Can the Schlage FC21 be opened from the hallway side?
Yes, when the privacy button is fitted. With the interior pushbutton in place the FC21 locks from inside but releases from the corridor side with a small emergency unlock tool through the outside knob, which is what a property manager or maintenance tech needs for a bedroom or bath door.
17) Is a Kwikset 200BRNL Breton passage lever the same thing as a Schlage FC21 Plymouth?
They cover the same doors but not the same certification or trim. The Kwikset 200BRNL Breton is a Grade 3 passage/hall/closet lever for doors 1-3/8 inch to 1-3/4 inch; the Schlage FC21 Plymouth is a Grade 2 knob for the same 1-3/8 inch to 1-3/4 inch range, and it converts to privacy with an interior pushbutton, which a straight passage set does not do. For a Kwikset privacy set in the same trim family, the 300BRNL Breton is Grade 3 privacy/bed/bath over the same door range.
18) If Grade 2 is more than the job needs, what is a lighter passage option?
The Schlage FC21 Plymouth is ANSI/BHMA Grade 2 with a stainless steel substrate. For a lighter passage set, the Callan Asheville is a Grade 3 passage leverset in satin nickel, and the Kwikset 200BRNL Breton is a Grade 3 passage/hall/closet lever for 1-3/8 inch to 1-3/4 inch doors. Both are levers and neither offers the pushbutton privacy conversion the FC21 has.
19) We want to keep the same knob look across a building but need keyed and non-keyed on different doors. What pairs with the FC21 Plymouth?
The Schlage FC21 Plymouth is a non-keyed knob in passage/privacy function. To keep a knob profile on the keyed and specialty openings, the Arrow HK11-BB is an entrance function ball knob with a conventional cylinder for 1-3/8 inch to 1-3/4 inch doors, and the Arrow MK33-BD-CS is a Grade 2 heavy duty asylum function ball knob with a conventional cylinder in the Schlage C keyway. The MK33 in Schlage C matches the FC21 family keyway convention, so a facility already on Schlage C keys can stay on one key section.
20) What do I use instead of the Plymouth knob when the door needs coded access rather than a key or pushbutton?
The Schlage FC21 Plymouth is a mechanical, non-electronic lock. For coded access, the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function covering doors 1-1/8 inch to 2 inch, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. Both use a lever trim and add credential control the FC21 does not provide.
21) Which passage lock matches a decorative interior program better than the Plymouth knob?
The Schlage FC21 Plymouth is a knob offered with Camelot, Collins, and Kinsler rose designs in finishes including satin nickel, matte black, bright chrome, satin chrome, and aged bronze. Where a decorative lever is wanted instead, the Baldwin Estate 5103 passage lever with 5048 rose covers passage/hall/closet, with matching 5103 privacy and left and right hand half dummy versions for the rest of the openings, so bedroom, closet, and inactive leaves all carry the same trim.
22) What finishes does the Schlage FC21 Plymouth knob come in?
Five: 619 Satin Nickel, 622 Matte Black, 625 Bright Chrome, 626 Satin Chrome and 716 Aged Bronze. Each is offered on all three rose designs, Camelot, Collins and Kinsler, so a matte black Kinsler and a satin nickel Camelot are both orderable combinations. 626 Satin Chrome is the usual match for existing commercial-spec hardware in a building, and 619 for residential brushed nickel trim.
23) Is the FC21 knob metal or is the housing plastic?
Stainless steel substrate through the lock body, which is what gives it corrosion resistance in a bathroom or a coastal unit where a plated pot-metal knob pits. That construction is part of what carries the Grade 2 rating rather than a builder-grade one.
24) Is the FC21 a tubular lock or a cylindrical one, and does it fit a standard bored door?
Cylindrical, bored type. It goes into the same cross bore and edge bore prep as any other cylindrical knob set, which is why it drops into existing doors on a retrofit without new machining, as long as the backset is 2-3/8 or 2-3/4 and the door is 1-3/8 to 1-3/4 inches thick.
How fast can I get the Schlage Residential FC21 PLY 626 KIN 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 Schlage Residential FC21 PLY 626 KIN come with a warranty?
Absolutely. The Schlage Residential FC21 PLY 626 KIN 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 Schlage Residential FC21 PLY 626 KIN?
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