Schlage Residential F51A Orbit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$85.00
$53.79
Schlage Residential Schlage Residential F51A - Entry Lock - Orbit Knob, C Keyway with 16211 Latch and 10063 Strike SCR-F51A-KEYED-ORB

Schlage Residential F51A Orbit Knob Entry Lock with C Keyway Single Cylinder

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Model: F51A ORB 626
$85.00
$53.79
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$85.00
$53.79
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Schlage Residential F51A Orbit Knob Entry Lock with C Keyway Single Cylinder

Grade 2 Residential Entry Lock with Professional Installation Features

The Schlage Residential F51A Orbit Knob Entry Lock delivers reliable residential security with Grade 2 commercial-grade performance. This single cylinder entry lock features a 5-pin C keyway cylinder, dual backset compatibility for 2-3/8" or 2-3/4" installations, and accommodates door thickness from 1-3/8" to 1-3/4". The lock includes a 1" x 2-1/4" universal latch with 1/2" throw and full lip radius strike for secure door engagement.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates 1-3/8" to 1-3/4" doors for versatile residential installation applications.
  • Dual Backset Design: Universal latch fits either 2-3/8" or 2-3/4" backsets for flexible door preparation requirements.
  • Grade 2 Commercial Performance: ANSI/BHMA A156.2-2017 Commercial Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA certification for superior durability.
  • Professional Latch System: 1" x 2-1/4" latch with 1/4" radius corner faceplate, 7/8" housing diameter, and 1/2" throw for secure engagement.
  • 5-Pin Security Cylinder: C keyway configuration with keyed alike (KA4) capability provides reliable key control and security.
  • Fire Door Compatibility: Available UL Listed for 3-hour fire door applications (F51A function) for code compliance installations.
  • Easy Installation: 3-step installation process requires only a screwdriver for convenient professional or DIY installation.
  • 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 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 for the lock body, latch, and cylinder components.
  4. Install the universal latch assembly and strike plate, ensuring proper alignment with door frame and secure mounting per manufacturer torque specifications.
  5. Install the lock mechanism and adjust cylinder operation for smooth key insertion, rotation, and interior turnbutton function.
  6. Test lock operation from both interior and exterior sides to verify proper keyed entry function, interior unlock operation, and secure latching. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Entry Doors
  • Single-Family Home Security
  • Apartment and Condominium Units
  • Townhouse and Duplex Properties
  • Rental Property Management
  • Home Renovation and Remodeling
  • Property Development Projects

Why Choose Schlage Residential Quality?

Schlage Residential F51A entry locks deliver professional-grade reliability with zinc and steel construction rated for Grade 2 commercial performance and Residential Grade AAA standards. The 10 Year manufacturer warranty provides long-term confidence in demanding residential applications. Engineered with dual backset compatibility and universal latch design for versatile installation requirements where dependable security performance is essential.

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:
Orbit Knob
Handle Type:
Knob
Product Attribute:
Cylindrical Locks
Product Model:
F51A
Product Function:
Entrance
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 ORB 626 – Frequently Asked Questions

1) Will the Schlage F51A knob entry lock fit a 1-3/8 inch door, or is it only for 1-3/4?
Both. The F51A Orbit knob entry lock covers a 1-3/8 inch to 1-3/4 inch door thickness range, so it goes on a standard 1-3/4 inch exterior door as well as the thinner 1-3/8 inch doors common on older interior and apartment openings. No spacer kit or thickness option to specify.
2) Is the F51A left or right handed? Do I have to specify the swing?
The F51A is non-handed. Same lock works on an inswing or outswing door, left or right hand, so there is nothing to specify on the order and nothing to get wrong on a fleet buy for a building where the doors swing different ways.
3) How does the F51A entry function actually work when someone walks out?
Keyed entry: turning the inside knob unlocks the door as it opens, so anyone leaving gets out without touching the button first. To lock it, either insert the key and rotate the cylinder from the outside, or push the interior turnbutton before you exit. It is a single cylinder lock, key outside, turnbutton inside, so nobody needs a key to get out.
4) Can I get several Schlage F51A locks keyed alike so one key runs the whole unit?
Yes. Keying is a required selection on the F51A: keyed different (the standard), keyed alike for multiple locks on one key, or no cylinder at all if you are supplying your own. There is also a key code field, so if you already run a C keyway system in the building you can order to that existing code and the new locks work on the keys your staff carry. Two 5-pin C section keys come with each lock.
5) Will the Schlage F51A latch into the strike plate already in my jamb?
Probably, if the existing prep is a standard residential one. The F51A latch has a 1 x 2-1/4 inch faceplate with 1/4 inch radius corners, a 7/8 inch latch housing, and a 1/2 inch throw. The strike supplied is a 1-5/8 x 2-1/4 inch full lip radius strike with no box. If your jamb has a square corner faceplate mortise you will need to reshape it or use the drive-in latch that is included, which needs no faceplate mortise at all.
6) Can I put a Schlage F51A on a fire rated apartment corridor door?
The F51A function is available UL Listed for 3-hour fire doors, alongside the F10, F40 (CSV only) and F80 functions. It also carries ANSI/BHMA A156.2-2017 Commercial Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA. For a rated opening, confirm the specific unit you are buying is the UL Listed build, because that listing is an available option on the function rather than a blanket property of every knob lock.
7) What is the closest Grade 2 alternative to the Schlage F51A entry knob if the door needs a full handleset instead of a knob?
The Schlage F51A is a Grade 2 single cylinder keyed entry lock with an Orbit knob, so it trims out as a knob on both faces. When the opening calls for an exterior gripping handle instead, the Delaney Katana (DLY-400-KA) is a Grade 2 single cylinder handleset with interior trim, and the Bravura 913-Savannah (BVR-BV913002906R) is a Grade 2 handleset that pairs a 615 interior plate with a 906-Macon interior knob, so the inside face still operates as a knob the way the F51A does.
8) Is a Grade 3 handleset an acceptable swap for a Grade 2 Schlage F51A knob entry lock?
They certify to different levels. The Schlage F51A carries an ANSI/BHMA Grade 2 rating, while the Callan Visconti (CLN-374001) and Callan Briona (CLN-374107) single cylinder handlesets and the Delaney Avino (DLY-400-AV) single cylinder handleset are Grade 3. If a spec sheet or facility standard names Grade 2, stay with the F51A or a Grade 2 peer such as the Delaney Katana (DLY-400-KA); the Grade 3 units are a different certification tier and would not satisfy that line on the drawing.
9) A deadbolt was ordered alongside a Schlage F51A knob lock - is a Delaney 200 deadbolt the same thing or an additional part?
They do different jobs on the same door. The Schlage F51A is a cylindrical keyed entry lockset that latches the door and locks by key from outside or by the interior turnbutton after exit. The Delaney Traditional (DLY-200-B) and Delaney Contemporary (DLY-200-LTR) are Grade 3 single cylinder deadbolts with a cylinder x thumbturn function - they add a separate bolt above the lockset and do not latch the door on their own. A deadbolt is a companion to the F51A, not a replacement for it.
10) Can an Emtek Conical Stem knob be used in place of a Schlage F51A on an entry door?
No - the function is different. The Schlage F51A is a keyed entry lock, single cylinder, that locks by key from the outside or by rotating the interior turnbutton. The Emtek Select Brass Conical Stem Dark Walnut Knob (EMTEK-CONICAL-STEM-DARK-WALNUT-KNOB-PASSAGE) is a passage/hall/closet function knob, which turns freely from both sides with no cylinder and no locking. It suits an interior opening; a keyed exterior door needs the F51A or another keyed entry unit.
11) Is a Schlage F51A knob lock enough on its own for an exterior entry door, or do I need a deadbolt too?
The F51A is a Grade 2 keyed knob with a 1/2 inch latch throw. That throw is a latch, not a deadbolt, so on an exterior door most specs pair it with a separate single cylinder deadbolt above it. If you want that pairing, order the deadbolt keyed to the same C keyway code as the lock so one key does both. For a lower-traffic exterior door where a deadbolt is going on separately, options like the Delaney Traditional or Contemporary Grade 3 single cylinder deadbolts (cylinder x thumbturn) cover that half of the job.
12) What is the difference between an F51A knob entry lock and a handleset for a front door?
Two different looks and two different door preps. The F51A is a bored cylindrical knob lock: one 2-1/8 inch cross bore, knob outside and in, key outside and turnbutton inside. A handleset gives you an exterior gripped thumb-latch handle over a taller escutcheon and usually integrates a deadbolt, which is the more common choice on a main front entry. If that is what you are after, Grade 2 handlesets like the Bravura 913-Savannah or 915-Jacksonville with the 906-Macon interior knob, or the Delaney Katana, are handleset equivalents at the same grade. The F51A is the right call for side doors, back doors, garage entries and unit doors where a knob is what is already on the opening.
13) Is Grade 2 worth it over a Grade 3 lock on a rental property?
On a turn-and-burn rental door, yes. The F51A carries ANSI/BHMA Grade 2, which is the mid tier of the three and is built for higher cycle counts and more force than Grade 3, the tier most builder-grade residential locks sit in. Several residential alternatives, the Callan Visconti and Briona handlesets and the Delaney Avino, are Grade 3. Grade 2 is the level property managers usually standardize on for tenant entries because it survives the traffic and the turnovers.
14) Does the Schlage F51A come with the latch and strike, or do I order those separately?
Both are in the box. The F51A includes the 16-086 dual-option dead latch (round faceplate or drive-in, your choice at install) and the 10-027 full lip radius strike at 2-1/4 by 1-5/8 inches, plus two keys. Install is a screwdriver job on an already-bored door. What is not included is a deadbolt or a strike box behind the strike plate, since the supplied strike is a no-box type.
15) Can I order the F51A without a cylinder so I can install my own?
Yes. The keying selection includes a no-cylinder option for less-cylinder builds, which is the route to take if you are putting the lock onto an existing keyway system that is not Schlage C, or if a locksmith is supplying the cylinders. Otherwise pick keyed different for individual doors or keyed alike when a group of locks needs to run on one key.
16) Should a Paxton PaxLock Pro be specified instead of a Schlage F51A entry lock?
Only if the opening is meant to run on credentials. The Schlage F51A is a non-electronic mechanical lock, keyed with a single cylinder, and it fits doors from 1-3/8 inch to 1-3/4 inch thick. The Paxton PaxLock Pro Galaxy Lever Latch Lock (PAX-900-620WT-US) is a battery powered lever latch lock with a dual frequency 13.56 MHz and 2.4 GHz reader, Bluetooth, AES128 encryption, and a 1-3/4 inch door thickness. It needs an access control credential rather than a key and is fixed to the 1-3/4 inch thickness, so a 1-3/8 inch door stays with the F51A.
17) What replaces a Schlage F51A knob entry lock when the tenant needs lever operation for accessibility?
The Schlage F51A is built around an Orbit knob, so the trim is a knob on both faces. For a lever, the Bravura 973-Montgomery (BVR-BV973002) is a Grade 2 handleset that comes with a 672 interior plate and a 939-Charlotte interior lever, matching the F51A's Grade 2 rating while giving a lever on the interior face. The other Bravura handlesets in the Savannah, Jacksonville, and Austin series (BVR-BV913002906R, BVR-BV915002906R, BVR-BV971002906R) all use the 906-Macon interior knob instead.
18) What finishes and rose styles does the Schlage F51A Orbit knob come in?
Five finishes: 505 Lifetime Brass, 605 Bright Brass, 619 Satin Nickel, 625 Bright Chrome and 626 Satin Chrome. Each pairs with a choice of three rose designs, Kinsler, Century or Collins. The rose is the trim plate behind the knob, so that choice is purely how it reads against the other hardware on the door. If you are matching existing Schlage on a building, 619 Satin Nickel and 626 Satin Chrome are the two that read as brushed silver, and 605 against 625 is the polished gold versus polished silver call.
19) What is the F51A made of and will it hold up on a high-traffic unit door?
Zinc and steel construction, rated ANSI/BHMA Grade 2 for commercial performance and Residential Grade AAA. That combination is why it turns up on apartment and condo units, townhouses and rental properties rather than only single-family front doors. Grade AAA is the top residential tier under A156.39.
20) Which Grade 2 option keeps a knob on the inside face when the exterior needs a gripping handle?
Three Bravura handlesets pair an exterior handle with the 906-Macon interior knob: the 913-Savannah (BVR-BV913002906R), the 915-Jacksonville (BVR-BV915002906R), and the 971-Austin (BVR-BV971002906R), all Grade 2 with a 615 interior plate. That keeps the inside operation consistent with a Schlage F51A knob entry lock, which is Grade 2 with an Orbit knob, when part of a property is being converted to handlesets and the rest stays on knobs.
How fast can I get the Schlage Residential F51A ORB 626 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 ORB 626 come with a warranty?
Absolutely. The Schlage Residential F51A ORB 626 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 ORB 626?
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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