Expert Advice - Competitive Prices - Dependable Quality


Your Cart is Empty

  • Lighting
  • 4437

    Full Mortise Lock, 3/4 inch

    For size and product information scroll down page.
    • How Sold: Each
    • Style: Transitional
    • Usually Ships In: 1-3 business days
    • Material: Brass & Steel
    • Finish: Natural
    • Includes: 2 Keys & Mounting Screws

    Full Mortise Lock

    Full Mortise Lock Measurement Diagram
    • Overall Lock Body: 2-1/16" width x 1-7/16" height
    • Backset: 3/4", 20 mm 
    • Selvedge: 3-3/8" x 1/2" - 12 mm x 85 mm
    • Bolt Projection: 5/16"
    • Lock Thickness: 5/16"
    • Key Measurements: Length 2-5/8", Barrel Diameter: 1/4", Barrel-length: 1-5/8", Key-bit Height: 9/16"

    Many lock sizes were made years ago. Few sizes are now made. Replacing old locks often requires cabinet work.

    More Full Mortise Drop-in Locks
    Keyhole Covers

    For help measuring and selecting full mortise locks, we recommend reading: How to select, measure and install full mortise cabinet locks.

    Experience a sleek, low-profile look with Full Mortise Locks. Upon installation, only top of lock and keyhole are visible. These useful locks, designed and manufactured in Germany. They are reliable and made to last. Trust in German engineering for a high-quality, dependable product.

    Install Considerations
    1. Strikes were rarely used with full mortise locks. Typically wood is notched to accept bolt. However if preferred a generic #4521 strike is available separately.
    2. When using on doors: use on right and left hand doors. Place lock to account for keyhole location.
    3. When using on drawers: Keyholes are off-center requiring lock to be positioned accordingly.
    4. Lock fits into cut out pocket in top-edge of drawer or side-edge off door.  Once installed only brass selvedge and keyhole are exposed. 
    If replacing a lock: the backset measurement must be determined
    • If you have original lock: measure distance between top edge of lock to lock pin in center of keyhole. This measurement is known as the backset.
    • If old lock not available, determine backset by measuring: distance from center of keyhole (where lock pin would be) to top edge of drawer or side edge of door.
    • The backset measurement of the replacement lock, must match backset measurement in original lock and/or keyhole location measurement in drawer or cabinet door.

    Customer Reviews

    Based on 5 reviews
    James Graue

    Perfect set back, small adjustments to the cabinet and better than new.

    David Neal
    Pure excellence!

    Need a lock for an antique chest and they had the perfect fit!! Could not be happier- highly recommend!!! Will buy from again-

    victor rossi

    Well made, the tongue of the lock retracted flush with the body of the lock with nice quality machining to the body of the lock. It did not come with a keeper plate (which was noted) I had to use ones from locks I had and modify it to fit the purpose. Wouldn't be a bad idea to, maybe, sell them separately. The lock was for new work and a keeper plate was needed. I liked that it was a door lock that worked both left and right hand unlike most drawer/door locks where they are handed only one way. They worked fine for my situation.

    Steve Gibson
    Item as described.

    Was a perfect fit. Would purchase items from Paxton again.

    Frank Schmidt
    Cabinet Lock Set

    Excellent quality and appearance. Had to expand the cutout for the larger size than the original.

    Net Orders Checkout

    Item Price Qty Total
    Subtotal $0.00

    Shipping Address

    Shipping Methods