Schlage Residential FC21 Alexa...
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Schlage Residential Schlage Residential FC21 - Alexandria Knob Passage and Privacy Latch - Grade 2 Cylindrical Non-Keyed Lock SCR-FC21-NONKEYED-ALX

Schlage Residential FC21 Alexandria Knob Passage and Privacy Cylindrical Lock - Grade 2 Non-Keyed

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Model: FC21 ALX 608 ALD
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$165.00
$117.99
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Schlage Residential FC21 Alexandria Knob Passage/Privacy Cylindrical Lock - Grade 2 Non-Keyed

Dual-Function Residential Lock with Easy Installation

The Schlage Residential FC21 Alexandria Knob combines passage and privacy functions in a single Grade 2 cylindrical lock designed for 1-3/8" to 1-3/4" doors. This non-keyed lock operates as passage by default and converts to privacy with an interior pushbutton, featuring dual backset compatibility for 2-3/8" or 2-3/4" installations. ANSI/BHMA A156.2-2017 Grade 2 certified with stainless steel construction for reliable residential performance.

Professional Features & Benefits

  • Door Thickness Compatibility: Fits 1-3/8" to 1-3/4" doors with dual backset options for 2-3/8" or 2-3/4" installations.
  • Dual Function Operation: Default passage function with privacy conversion via interior pushbutton, plus emergency unlock capability from exterior.
  • Grade 2 Certification: ANSI/BHMA A156.2-2017 Grade 2 and A156.39-2015 Residential Grade AAA certified for reliable performance.
  • Professional Latch System: 1" x 2-1/4" latch with 1/4" radius corner faceplate, 1/2" throw, and universal drive-in design.
  • Stainless Steel Construction: Durable stainless steel substrate provides long-lasting performance and corrosion resistance.
  • Easy Installation: 3-step installation process requires only a screwdriver with included universal latch and full lip radius strike.
  • Fire Door Compatible: Available UL Listed for 90-minute fire door applications when required.
  • Manufacturer Warranty: 10 Year warranty coverage for added confidence and protection.

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 backset measurement of either 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 for the 1" housing diameter and latch installation.
  4. Install the universal latch system and full lip radius strike using provided mounting hardware per manufacturer torque specifications.
  5. Mount the lock assembly and adjust for proper alignment, ensuring smooth knob operation and proper latch engagement.
  6. Test both passage and privacy functions including pushbutton operation and emergency unlock capability. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Interior Doors
  • Bedroom and Bathroom Privacy
  • Hall and Closet Access
  • 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 coverage and dual-function design provide versatile performance for passage and privacy needs. Engineered with easy 3-step installation and universal compatibility for reliable long-term service.

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:
Alexandria 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 ALX 608 ALD – Frequently Asked Questions

1) Can I put a Schlage FC21 knob on a 2 inch thick door?
No. The FC21 tops out at 1-3/4 inch, so anything thicker needs a different lockset. For thicker openings the Hager 2510 passage lever runs 1-3/8 to 2 inch, the Dexter C1000 series covers 1-3/8 to 2 inch, and the Falcon K101 goes to 2-1/4 inch. Measure the door before ordering rather than assuming, since solid core and rated doors in older buildings often run over.
2) Is the Schlage FC21 a passage lock or a privacy lock?
Both, and you decide at install. Out of the box the FC21 works as passage, free turning from either side with no locking. Insert the privacy pushbutton into the interior side and it becomes a bed and bath privacy lock, with a small emergency unlock from the outside for when a kid locks the bathroom. That is one part number to stock for hall, closet, bedroom and bath doors instead of two.
3) Do I have to order the Schlage FC21 knob handed for a left or right hand door?
No handing to specify. The FC21 Alexandria knob is non-handed, so a single part works on left or right hand doors and on inswing or outswing. For a property manager buying a case of these for a turn, that means no sorting at the door.
4) Will the Schlage FC21 latch into the strike plate already in my door frame?
Usually yes on residential frames. The FC21 ships a 1 x 2-1/4 inch latch face with 1/4 inch radius corners and a 1/2 inch throw, plus a 1-5/8 inch x 2-1/4 inch full lip radius corner strike. If your existing strike is the common radius corner residential type at that size, the new latch drops into the same mortise. Square corner prep is the one that will not match, and the included strike is radius, so plan on chiseling the corners or replacing the frame prep there.
5) Does the Schlage FC21 take a key or work on a master key system?
No. The FC21 Alexandria is a non-keyed lock, passage and privacy only, with no cylinder and no keyway. It cannot be keyed alike or brought onto a master key system. For a keyed opening in the same look you need a keyed entry or storeroom lockset instead, and for a commercial keyed knob on the Schlage C keyway the Arrow HK11 entrance knob is one option.
6) What is the closest equivalent to the Schlage FC21 Alexandria knob if I need a lever instead of a knob on an interior passage door?
The Schlage FC21 Alexandria is a knob-style Grade 2 cylindrical passage/privacy lock. If the opening calls for 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 lock in passage/closet function. Both carry the same Grade 2 rating as the FC21 and cover the same hall and closet duty, with a lever grip instead of a knob. The Hager 2510 is another Grade 2 cylindrical passage lever, with a Withnell lever and a 1-3/8 inch to 2 inch door thickness range against the FC21's 1-3/8 inch to 1-3/4 inch.
7) Is the Schlage FC21 Alexandria knob heavy duty enough for a commercial corridor, or should I step up?
The Schlage FC21 Alexandria is a Grade 2 residential cylindrical lock. For commercial corridor traffic, the Grade 1 passage options in cylindrical format are the Falcon K101, heavy duty with a fire rating, the Falcon T101 heavy duty passage lever with pressure release technology, the Design Hardware X75 Grade 1 passage lever for 1-3/4 inch doors, and the Corbin Russwin CL3110 Grade 1 vandal resistant passage/closet lever. All four are Grade 1 rather than the FC21's Grade 2, and all are lever trim rather than knob.
8) I need a keyed lock on the same door style as the FC21 Alexandria. What should I order instead?
The Schlage FC21 Alexandria is a non-keyed lock, so it will not secure a door that needs a key. For keyed cylindrical hardware in the same bored prep, the Cal-Royal AG00 is a Grade 2 entrance lever with a 6-pin Schlage C keyway keyed different on a 2-3/8 inch backset for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt across the same 1-3/8 inch to 1-3/4 inch door range. The Arrow HK11-BB is a turn-pushbutton entrance cylindrical lock with a ball knob and conventional cylinder for 1-3/8 inch to 1-3/4 inch doors if you want to stay with knob trim.
9) Can I use a dummy lever in place of the FC21 Alexandria on a closet door?
No. The Schlage FC21 Alexandria is a working passage lock with a latch that retracts when the knob turns. A dummy trim has no latch and no moving mechanism, so it will not hold a door closed on its own. Dummy options include the Accentra 455LN Augusta Grade 1 single dummy cylindrical lever, the BEST 7KC Series single dummy trim Grade 2 medium duty, the BEST 9K Series 1DT single dummy Grade 1 heavy duty, and the Baldwin Estate 5103 half dummy in left and right hand versions. Use a dummy only on an inactive leaf or a door held by a catch, and use a passage set like the FC21 where the latch does the work.
10) Which passage lock is fire rated if the FC21 Alexandria goes on a rated opening?
For a rated opening, the Falcon K101 Grade 1 heavy duty passage cylindrical lock carries a fire rating and covers 1-3/8 inch to 2-1/4 inch doors, and the Corbin Russwin CL3110 Grade 1 vandal resistant passage/closet lever is fire rated for 1-3/4 inch to 2 inch doors. On the knob side, the Kwikset 200DL-RCALFD Delta passage lock uses a round corner adjustable 20 minute UL latch with a round corner strike. Confirm the rating required by the door assembly before ordering.
11) Can I use a Schlage FC21 knob on a fire rated apartment or corridor door?
The FC21 is available UL Listed for 90 minute fire door use, so the fire rated configuration exists in the line. Note the function though: a passage or privacy knob has no keyed security, so it belongs on unit interior doors rather than on a rated entry that needs to lock. It carries ANSI/BHMA A156.2-2017 Grade 2 and A156.39-2015 Residential Grade AAA.
12) What finishes and rose styles does the Schlage FC21 Alexandria knob come in?
Six finishes: 530 Black Stainless, 608 Satin Brass, 618 Polished Nickel, 619 Satin Nickel, 622 Matte Black and 716 Aged Bronze. Each pairs with a choice of three rose designs, Alden, Camelot or Collins, so the trim can be matched to the entry hardware already on the building. All 18 combinations are made, which matters when you are standardizing a floor and want one look across every interior door.
13) What comes in the box with the Schlage FC21, and do I need anything else to hang it?
The FC21 ships complete for a standard door: the knob assembly, the 16-600 universal spring latch with both round faceplate and drive-in options, and the 10-027 full lip radius strike with its screws. A screwdriver does the whole install on an already bored door. On new doors you supply the boring, and if you want privacy rather than passage you insert the privacy pushbutton on the interior side.
14) I need a dummy knob on the inactive leaf of a closet pair. Will the FC21 work?
Not for that. The FC21 is a working passage and privacy lockset with a live latch, so it needs a bored door and a strike. A dummy is surface mounted trim with no latch. For that leaf look at a dummy set instead, such as the Baldwin Estate 5103 half dummy lever, the BEST 7KC single dummy trim, or an Emtek Classic dummy pair.
15) Is the Schlage FC21 knob suitable for a commercial office or school corridor?
It is built and certified for residential duty, so unit interiors, apartments, condos and single family work are where it belongs. Institutional corridors and classrooms want a Grade 1 commercial cylindrical lock: the Dexter C1000 classroom, the Corbin Russwin CL3110 for passage, or the Falcon T101 heavy duty passage lever. Those are the lines specified for facility standardization.
16) What is a simpler alternative to the FC21 Alexandria for an apartment bedroom door where I only need privacy?
The Schlage FC21 Alexandria ships as passage by default and converts to privacy with an interior pushbutton, so one part covers both. If a door only ever needs privacy, the Kwikset 300BRNL RDT Breton is a Grade 3 privacy lever set for 1-3/8 inch to 1-3/4 inch doors, the same door range the FC21 fits, and the Arrow MK02-TA is a privacy cylindrical lock with a Tudor knob and a fire rating for 1-3/4 inch to 2 inch doors. Choosing a dedicated privacy set means the door is fixed to that one function rather than field-selectable like the FC21.
17) What passage lock matches the FC21 Alexandria's door range but is a lower grade for a light-use rental interior?
The Schlage FC21 Alexandria is Grade 2 for 1-3/8 inch to 1-3/4 inch doors. A Grade 3 option over the same door range is the Kwikset 200BRNL RDT Breton passage lever set. The Callan Asheville Grade 3 passage leverset in satin nickel is another Grade 3 passage choice. Both are lever trim; the FC21 is a knob and carries the Grade 2 rating.
18) I want the FC21 Alexandria look but with a decorative rose for a high-end unit. What else should I look at?
The Schlage FC21 Alexandria comes in Alden, Camelot and Collins rose designs across finishes including satin brass, polished nickel, satin nickel, matte black, aged bronze and black stainless. For a decorative alternative, the Baldwin Estate 5103 passage lever uses the 5048 rose and is offered in matching privacy and half dummy versions, so a whole suite of doors can be trimmed alike. Emtek Classic Brass Cortina and Arts and Crafts leversets are also available, though as dummy pairs rather than latching passage sets.
19) Does the FC21 Alexandria work for a bathroom that also needs an entry key, or do I need a different lock?
No, a different lock is needed. The Schlage FC21 Alexandria is non-keyed and runs passage or privacy only. For an opening that needs a key from outside, the Hager 2525 is a Grade 2 commercial cylindrical entry lock with a lever handle for 1-3/8 inch to 2 inch doors, the Falcon B511CP6D is a Grade 2 medium duty cylindrical lever in entry/office function, and the Dexter C1000 is a Grade 1 entry/office clutching keyed lever for 1-3/8 inch to 1-3/4 inch doors.
20) For an ADA-conscious multi-family renovation, what replaces the FC21 Alexandria knob with lever operation across a whole unit?
The Schlage FC21 Alexandria uses knob trim, which requires grasping and twisting. To convert a unit to lever operation, the Bravura Atlanta, Orlando and Tampa passage leversets are all Grade 2 passage sets, with Atlanta and Orlando on round trim and Tampa on square trim, and the Bravura Miramar round trim passage leverset in US4 satin brass is another Grade 2 option. The Accentra 4601LN with Augusta trim is a Grade 2 passage cylindrical lever as well. All carry the same Grade 2 rating as the FC21.
21) The FC21 Alexandria is mechanical. What do I use if the door needs code entry instead of a key or pushbutton?
The Schlage FC21 Alexandria is a non-electronic mechanical lock with no code capability. For code entry, the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function, fitting doors from 1-1/8 inch to 2 inch, which is a wider range than the FC21's 1-3/8 inch to 1-3/4 inch. The Delaney LP250 is a Grade 2 electronic keypad leverlock, and Emtek offers a Classic keypad leverset.
22) The FC21 Alexandria is non-handed. Are the comparable passage sets non-handed too?
The Schlage FC21 Alexandria is non-handed, so one part covers left and right swings. Among the alternatives, the Falcon B101 Grade 2 cylindrical passage lever is also non-handed, and the Kwikset 200DL Delta passage lock is reversible with an adjustable 6AL latch and RCS strike. By contrast, the Baldwin Estate 5103 half dummy is ordered by hand, with separate left hand and right hand parts, so a handing call is required on those.
23) Does the drive-in latch on the Schlage FC21 mean I can skip mortising the door edge?
Yes, that is what it is for. The 16-600 latch is supplied dual option, so you either use the round faceplate in a mortised edge or knock in the circular drive-in collar with no edge mortise at all. Prehung doors bored for a drive-in latch take it straight, which saves a chisel pass on every door in a turnover.
How fast can I get the Schlage Residential FC21 ALX 608 ALD 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 ALX 608 ALD come with a warranty?
Absolutely. The Schlage Residential FC21 ALX 608 ALD 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 ALX 608 ALD?
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
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