Schlage Residential F51A Siena...
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$88.00
$57.62
Schlage Residential Schlage Residential F51A - Entry Lock - Siena Knob, C Keyway with 16211 Latch and 10063 Strike SCR-F51A-KEYED-SIE

Schlage Residential F51A Siena Knob Entry Lock with C Keyway

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Model: F51A SIE 626 KD
$88.00
$57.62
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$88.00
$57.62
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Schlage Residential F51A Siena Knob Entry Lock with C Keyway

Professional Residential Entry Lock Solution

The Schlage Residential F51A Siena Knob Entry Lock delivers Grade 2 commercial-grade security for residential applications. This single cylinder keyed entry lock features a 5-pin C keyway cylinder with dual backset compatibility for 2-3/8" or 2-3/4" installations. Designed for door thickness range of 1-3/8" to 1-3/4", this non-handed lock includes a 1" x 2-1/4" universal latch and full lip radius strike for complete installation.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates 1-3/8" to 1-3/4" doors with dual backset options for 2-3/8" or 2-3/4" installations.
  • Grade 2 Commercial Construction: ANSI/BHMA A156.2-2017 Commercial Grade 2 certified with zinc and steel substrate for enhanced durability.
  • Keyed Entry Function: Single cylinder operation unlocks when door is opened from inside, with manual turnbutton locking from interior or key operation from exterior.
  • Universal Installation Design: Non-handed configuration with easy 3-step installation requiring only a screwdriver for setup.
  • Complete Hardware Package: Includes 16211 universal latch (1" x 2-1/4", 1/2" throw) and 10063 full lip radius strike (1-5/8" x 2-1/4") for complete installation.
  • 5-Pin Security Cylinder: C keyway configuration with keyed alike (KA4) operation and two keys per lock for convenient access control.
  • Fire Door Compatibility: Available UL Listed for 3-hour fire door applications (F51A function) for enhanced safety compliance.
  • Manufacturer Warranty: 10 Year warranty coverage for added confidence and long-term protection.

Standard Features

Certification: ANSI/BHMA A156.2-2017 Commercial Grade 2; ANSI/BHMA A156.39-2015 Residential Grade AAA; Available UL Listed for 3-hour fire door (F10, F40 (CSV Only), F51A, F80 functions).
Latch: 1"x 2-1/4", 1/4" radius corner faceplate, 7/8" housing diameter, 1/2" throw, circular drive-in included, universal latch
Strike: 1-5/8" x 2-1/4" radius corner, full lip, no box
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 (1-3/8" to 1-3/4"), backset selection (2-3/8" or 2-3/4"), and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the universal latch and strike installation.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for the cylindrical lock configuration.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, ensuring proper alignment of the Siena knob assembly.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion, testing both key and turnbutton functions.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Entry Doors
  • Multi-Family Housing Units
  • Apartment and Condominium Complexes
  • Single-Family Home Security
  • Residential Property Management
  • Home Builder and Contractor Projects
  • Residential Renovation and Upgrade Projects

Why Choose Schlage Residential Quality?

Schlage Residential F51A entry locks deliver professional-grade reliability with Grade 2 commercial certification and zinc and steel construction for demanding residential applications. The 10 Year manufacturer warranty provides added confidence for long-term performance. Engineered with easy 3-step installation and dual backset compatibility, this lock combines security with convenient residential functionality.

ANSI/BHMA Grade 2 rated mechanical knob or lever with solid brass construction and SecureKey re-keyable cylinder. Support Resources: Manuals Hub: Schlage Manuals, Installation Guides & Templates (https://www.schlage.com/en/home/support/installation-manuals-templates.html) || Installation Guides: F-Series Knob and Lever Installation Instructions (https://www.schlage.com/content/dam/sch-us/documents/pdf/installation-manuals/P515-302.pdf) || Door Prep Templates: F10/F40/F51 Knob and Lever Door Prep Template (https://www.schlage.com/content/dam/sch-us/documents/pdf/installation-manuals/P513-593.pdf) || FAQs & Support: Schlage Product FAQs (https://www.schlage.com/en/home/support/faqs.html)

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:
16-086: Dead Latch, Dual Option (Round, Drive-in)
Keyed Function:
Single Cylinder
ANSI/BHMA:
F81
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Keyed:
Yes
Electronic:
No
Commercial/Residential:
Residential
Function Description:
Keyed entry function unlocks when door is opened from the inside, allowing you to leave quickly, conveniently and re-enter easily; Locked by inserting key and rotating cylinder from outside, or manually rotating interior turnbutton after exit
Lock Type:
Cylindrical
Lock Function:
Single Cylinder
Product Type:
Bored Locksets
Handle Design:
Siena Knob
Handle Type:
Knob
Product Model:
F51A
Product Function:
Keyed Entry
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 1-3/4"
Product Category:
Mechanical Locks
Product Substrate:
Zinc and Steel
Department:
Door Hardware

Schlage Residential F51A SIE 626 KD – Frequently Asked Questions

1) Will the Schlage F51A Siena knob entry lock fit a 1-3/8 inch door, or is it only for 1-3/4?
Both. The F51A is built for a door thickness range of 1-3/8 inches to 1-3/4 inches, which covers the standard 1-3/4 inch exterior slab and the thinner 1-3/8 inch doors common on older interior and lightweight entry openings. No spacer kit or separate part number to specify, one lock covers the range.
2) My doors are bored 2-3/8 backset and some are 2-3/4. Do I have to order the Schlage F51A two different ways?
No. The F51A ships with a dual backset latch that adjusts to either a 2-3/8 inch or a 2-3/4 inch backset, so one part number covers both preps. That matters on a mixed building where the front doors were bored deeper than the rest. The latch is the 16-086 dead latch, supplied in both round face and drive-in form so it drops into a bored hole or a plain drilled edge.
3) Do I need to know the handing before ordering a Schlage F51A knob lock?
No handing required. The F51A is non-handed, so the same lock works on a left hand or right hand door, inswing or outswing. Set it on the bench and mount it. For a property manager buying a dozen at once, that means no per-door survey before the order goes in.
4) Will the Schlage F51A latch into the strike plate already in my frame?
Usually, but check the lip. The F51A latch throws 1/2 inch with a 1 x 2-1/4 inch faceplate, so it lines up with the standard cylindrical prep in most wood frames. It comes with a 10-027 full lip radius strike measuring 2-1/4 by 1-5/8 inches, no box behind it. If your frame currently has a square corner strike, the radius corner on the supplied plate will not drop into that mortise without touching it up, and a hollow metal frame with an existing ANSI strike keeps its own strike, you just use the latch.
5) Can I get several Schlage F51A locks keyed alike so one key opens all of them?
Yes, keying is a required choice on the order. Pick KD for keyed different, which is the standard, or KA for keyed alike across multiple locks. There is also a no-cylinder option if you are supplying your own. If you are matching an existing key system, there is a key code field on the order to enter your code. The cylinder is 5-pin in Schlage C keyway with two keys per lock, so it keys into an existing C keyway system.
6) Is the Schlage F51A knob lock rated for a fire door?
The F51A function is available UL Listed for 3-hour fire doors. That listing covers the F51A along with the F10, F80 and F40 (CSV only) functions in the F Series. It also carries ANSI/BHMA A156.2-2017 Commercial Grade 2 and A156.39-2015 Residential Grade AAA certification, which is why it turns up on corridor and unit-entry doors in multi-family work rather than just houses.
7) What is a Grade 2 alternative to the Schlage F51A Siena knob entry lock when the opening needs a handleset instead of a knob?
The Schlage F51A Siena is a cylindrical bored lockset with a knob trim, Grade 2, single cylinder keyed entry. If the entry door calls for a full exterior handleset rather than a knob, the Delaney Katana Grade 2 single cylinder handleset with interior trim is also Grade 2 and also single cylinder. Bravura carries Grade 2 handlesets as well - the 913-Savannah with 615 interior plate and 906-Macon interior knob, the 915-Jacksonville, and the 971-Austin all pair an exterior handleset grip with an interior knob, so the inside of the door still operates like the F51A knob.
8) Can a Delaney Traditional or Contemporary deadbolt be used in place of a Schlage F51A knob entry lock?
No, they do different jobs on the door. The Schlage F51A Siena is a keyed entry bored lockset: it carries the knob that retracts the latch and holds the door closed, locked by key outside or by the interior turnbutton. The Delaney Traditional 200-B and the Delaney Contemporary 200-LTR round deadbolt are Grade 3 single cylinder deadbolts, cylinder by thumbturn, with no latch or handle - a deadbolt bolts the door but does not latch it. On an entry opening they go above the F51A as a second point of security, not instead of it.
9) What replaces a Schlage F51A knob entry lock when the door needs credential access instead of a mechanical key?
The Schlage F51A Siena is a mechanical lock - no electronics, keyed with a 5-pin C keyway cylinder and locked by key or interior turnbutton. When an opening has to be controlled by card or phone instead, the Paxton PaxLock Pro Galaxy lever latch lock is a battery powered lever lock with a dual frequency reader at 13.56 MHz and 2.4 GHz, Bluetooth, AES128 encryption, for 1-3/4 inch door thickness, UL, FCC and ISED listed. It is a lever rather than a knob, and it takes credentials rather than a C section key, so an opening switched to it comes off the mechanical keying schedule.
10) Does the Schlage F51A lock itself when the door shuts, or do I have to key it every time?
It does not self lock. Keyed entry function: turn the interior turnbutton before you leave and pull the door shut, or lock it from outside with the key. Opening the door from the inside releases the button, so you cannot walk out and leave it unlocked behind you by accident, and you cannot lock yourself out by simply closing the door. For a rental unit that is the behavior most tenants expect on the knob itself.
11) I want a knob lock and a deadbolt on the same door. What do I add to a Schlage F51A?
The F51A is the knob lockset only, single cylinder keyed entry. For a deadbolt above it you need a separate lock with its own bore. The Delaney Traditional 200-B and the Contemporary round 200-LTR are both Grade 3 single cylinder cylinder-by-thumbturn deadbolts. If you want the deadbolt to work on the same key as the knob, order the F51A with the KA keying option and a key code, and confirm the deadbolt cylinder is a matching keyway before you commit.
12) What finishes does the Schlage F51A Siena knob come in, and will it match the rest of my building?
Seven finishes on the Siena knob with the Alden rose: 605 bright brass, 609 antique brass, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, and 716 aged bronze. Those are BHMA finish numbers, so if the doors you already have are marked 626 or 619 on the existing hardware, order the same number and it matches across the fleet. Every finish uses the Alden rose, so the escutcheon footprint on the door is identical whichever one you pick.
13) What is the F51A made of, and will it hold up on a high-traffic apartment door?
Zinc and steel substrate, certified to ANSI/BHMA A156.2-2017 Commercial Grade 2. Grade 2 is the middle commercial tier, above residential Grade 3 and below the Grade 1 used on institutional openings. For unit entries, common-area doors and multi-family turnover work, that is the level most specs land on. If the opening sees genuine institutional traffic, a school or hospital corridor, specify Grade 1 mortise or heavy-duty cylindrical instead.
14) What comes in the box with a Schlage F51A, and what else do I need to buy to install it?
Everything for the opening is in the box: the Siena knob assembly inside and out, the 5-pin C keyway cylinder with two keys, the 16-086 dual option dead latch (round face and drive-in both supplied), and the 10-027 full lip radius strike at 2-1/4 by 1-5/8 inches. No strike box is included. On a door already bored for a cylindrical lock it is a screwdriver job. On a fresh slab you need the door prep drilled and routed for the latch face first.
15) Which entry locks besides the Schlage F51A carry a Grade 2 rating for a multi-family standardization spec?
The Schlage F51A Siena knob entry lock is ANSI/BHMA Grade 2. Among the alternatives, the Delaney Katana single cylinder handleset and the Bravura handlesets - 913-Savannah, 915-Jacksonville, 971-Austin and 973-Montgomery - are also Grade 2. The Callan Visconti and Briona handlesets and the Delaney Avino handleset are Grade 3, so a facility standard written to Grade 2 would exclude them.
16) How do the Callan Visconti and Briona handlesets compare to the Schlage F51A entry knob for a rental unit front door?
The Schlage F51A Siena is Grade 2 and keys with a 5-pin C keyway cylinder, which matters when a property manager wants the whole building on one key section. The Callan Visconti and Callan Briona are both single cylinder handlesets with interior trim, and both are Grade 3. All three lock the door with a key from outside and a single cylinder from inside, so the operation on the door is the same idea; the difference is the certification level and the exterior form, grip versus knob.
17) What knob should be ordered for an interior door that does not need to lock, if the Schlage F51A is going on the entry?
The Schlage F51A Siena is keyed, single cylinder, for the door that has to lock. For a hall, closet, or pass-through door where no key is wanted, the Emtek Select Brass Conical Stem Dark Walnut knob is a passage function knob - it turns and latches but has no cylinder and no key. Pairing them puts the keyed lock only where security is needed and a plain latching knob everywhere else.
18) Can the Schlage F51A knob lock be tied into an access control or fob system?
No. The F51A is a purely mechanical, non-electronic keyed lockset, key outside and turnbutton inside. There is no reader, no credential and nothing to wire. If you need fob or Bluetooth credentials on that opening, the Paxton PaxLock Pro 900-620WT-US is a battery-powered lever latch lock with a dual frequency 13.56 MHz and 2.4 GHz reader and Bluetooth, for a 1-3/4 inch door.
How fast can I get the Schlage Residential F51A SIE 626 KD 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 F51A SIE 626 KD come with a warranty?
Absolutely. The Schlage Residential F51A SIE 626 KD 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 F51A SIE 626 KD?
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