Classic Brass Interior Mortise Lock Set With Thumbturn

14 reviews
Regular price $ 89.99 Sale

Vintage-style Hardware

  • High quality & well-built internal mechanism for sturdy operation
  • Traditional & common size interior mortise lock for doors
  • Thumb turn operation for bolt
  • 2-1/2" backset
  • Solid brass plates, thumbturn piece, latch, & throw-bolt
  • Thick steel casing with black japanned finish
  • Reversible for right or left applications
  • Doorknob spindle hub:  9/32" (7 mm)
  • Set includes a mortise strike, a solid brass thumb-turn, & four flat head screws
  • For an emergency release key for the outside,  see here.
Customer Reviews
4.9 Based on 14 Reviews
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Carl B.
United States United States


It was the perfect find for what we needed, and arrived quickly.

United States United States

Perfect replacement

Trying to find a replacement for my bathroom lock set seemed almost impossible until I found Hardwick’s Hardware. Fit perfectly, outstanding quality and selection of finishes. Fast delivery too. So glad I found this source for vintage hardware.

Jesse R.
United States United States

New door hardware

I love my new Classic Brass Interior Mortise Lock Set With Thumbturn. It fits my old door perfectly, it’s just what I wanted!

Lana Z.
United States United States

Great quality and quick shipping!

This mortise lock set was exactly what I was looking for to replace an old, non-functioning key mortise lock in our bathroom. The lock operates smoothly and looks great. The shipping was very quick. Highly recommend!

William G.
United States United States

Only one to buy!

I have had 2 mortise locks from the box chain stores fail with a faulty cheap internal mechanism to operate the door latch that breaks off, leaving me with no other option than to deconstruct my door jam in order to get the door open, with someone stuck inside the room. This lock set is FAR superior with a much more robust internal mechanism that I truly trust. Never buy the mortise lock from box stores, only buy this one, well worth the price!

  • A traditional & authentic old-style interior mortise lock set with a thumbturn for the deadbolt operation & locking of doors. This lock is a replica of common-style mortise locks from the past century, although it will easily fit in with any time period from early 20th century to current modern styles. The plates, thumb turn piece, latch & throw-bolt are made of high quality solid brass for a real handsome look. The lockset case is made of thick steel with a well-built internal mechanism & bolt, unlike many basic locks out on the market today. The 2-1/2" backset measures from the edge (front) of the plate, to the center of the hole. This old-style privacy lockset is available in unlacquered brass (will patina naturally), oil rubbed bronze, & polished nickel finishes. Beautify & secure your doors with this handsome & classic piece of hardware. For an emergency release key for the outside,  see here.

         Hardwick & Sons is pleased to offer vintage-style hardware for the many people who desire to fashion their homes with charm, quality, & style. The traditional-style hardware that we showcase are true & faithful reproductions of classic hardware pieces found in the many homes from across America throughout the past century.

  • Product Backset Case Size Face Plate Keyhole to Knob Hub Screw Hole Spacing Square Hole Size for Thumbturn Piece
    Strike Plate  Size Model #
    Interior Mortise Lock 2-1/2" 3-1/8" High   x   3-5/8" Wide   x   9/16" Thick 5-1/4" High   x   15/16" Wide 2-1/4" 4-5/8" 3/16" 3-7/8" Long x 1" Wide (8887)



    For California Residents:

    WARNING: Cancer & Reproductive Harm -

    WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to



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