Schlage Residential F51A Plymouth Knob Entry Lock with C Keyway

Schlage Residential F51A Plymouth Knob Entry Lock with C Keyway

Professional Residential Entry Lock Solution

The Schlage Residential F51A Plymouth Knob Entry Lock delivers Grade 2 commercial-quality security for residential applications. This single cylinder entry lock features a 1" x 2-1/4" latch with dual backset compatibility for 2-3/8" or 2-3/4" installations, accommodating door thicknesses from 1-3/8" to 1-3/4". The lock includes a 5-pin C keyway cylinder with keyed alike (KA4) configuration and comes complete with 16211 latch and 10063 strike components.

Professional Features & Benefits

• Dual Backset Compatibility: Universal latch fits either 2-3/8" or 2-3/4" backsets for flexible installation options.
• Door Thickness Range: Accommodates doors from 1-3/8" to 1-3/4" thick for versatile residential applications.
• Grade 2 Commercial Construction: ANSI/BHMA Grade 2 certification provides commercial-quality durability for demanding residential use.
• Complete Latch Assembly: Includes 1" x 2-1/4" latch with 1/4" radius corner faceplate and 7/8" housing diameter with 1/2" throw.
• Professional Strike Plate: Full lip radius strike measuring 1-5/8" x 2-1/4" ensures secure door frame engagement.
• 5-Pin Security Cylinder: C keyway configuration with keyed alike (KA4) system includes two keys per lock for convenient access management.
• Easy Installation: Simple 3-step installation process requires only a screwdriver for quick professional setup.
• Manufacturer Warranty: 10 Year warranty coverage provides long-term confidence and 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 the required 2-1/8" cross bore hole and 1" edge bore hole, ensuring proper alignment and smooth finish.
4. Install the latch assembly into the edge bore hole and secure the strike plate to the door frame using provided fasteners.
5. Mount the lock mechanism through the cross bore hole and secure both interior and exterior components per manufacturer torque specifications.
6. Test lock operation with provided keys to verify proper cylinder function, latch engagement, and smooth knob operation. 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 Office and Study Rooms
• Master Suite Privacy Applications

Why Choose Schlage Residential Quality?

Schlage Residential F Series locks deliver professional-grade reliability with zinc and steel construction rated to ANSI/BHMA Grade 2 commercial standards. The 10 Year manufacturer warranty provides added confidence for long-term residential security applications. Engineered for demanding residential use where dependable entry control and classic design aesthetics are 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)