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Internet # 317740309

Model # ML01D

Store SKU # 1006582027

2.5 in. Satin Chrome Left Hand Entry Mortise Lock Set with Backset and 2 SC1 Keys

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Product Details

About This Product

Premier Lock is an industry leader in providing functional, secure and smart locksmith products for residential and commercial purposes. All cylinders used in Premier Lock products are made of solid brass to ensure an extended lifetime and protection against corrosion. Secure your doorway with this Satin Chrome Mortise Entry Lock Set. Each mortise lock is precision engineered and cut for maximum performance with a 2-1/2 in. backset. This lock is rated high for security.


  • Heavy-duty construction, precision-engineered, solid brass cylinder and 2 keys included
  • Surface mounted knobs on interior and exterior for easy installation, key on exterior and thumb-turn on interior
  • Solid brass cylinder and 2 keys included with each lock
  • Compatible parts and dimensions with industry standards
  • Includes a ball door knob with surface-mounted knob-plate trim
  • Face plate size 1-1/8 in. x 7-5/8 in., 2-1/2 in. back set
  • Outer face trim: 10 in. x 2-7/8 in.
  • Inner face trim: 7-1/8 in. x 2-3/8 in.
  • Compatible with doors with a thickness between 1-3/8" - 2"
  • Mechanism body dimensions: 3-5/8 in. x 5-1/2 in. x 1 in.
  • When printing the drilling template (Installation Guide), make sure printing preferences are set to print to-size, not print to-fit. Print to-fit will alter the template scaling.
  • Return Policy

Product Information

Internet # 317740309

Model # ML01D

Store SKU # 1006582027


Dimensions: H 10 in, W 2.25 in, D 2.5 in


Product Depth (in.)

2.5 in

Product Height (in.)

10 in

Product Width (in.)

2.25 in



Commercial, Residential

Door Handing


Door Lock Style


Door Locks & Knobs Product Type

Mortise Locks


Easy Installation


Satin Chrome

Finish Family

Satin Chrome

Hardware Color Family



Drilling Template, Mounting Hardware


Exterior, Interior



Product Weight (lb.)

3.95 lb



Security/ANSI Grade


Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

2-Year Warranty

Questions & Answers

Q:Can these replace an old skeleton key mortise lock and doorknob? What do I need to measure to see if it will work?
by|Mar 7, 2024
1 Answer
Answer This Question

A:  Hi - Most skeleton mortise locks were used for interior doors that typically have a different setup than the exterior doors. Be sure to measure the cavity in the door to make sure the internal mechanism can be inserted into the door, the measurements of this are 3-5/8 in. x 5-1/2 in. x 1 in. Thanks!

by|Mar 8, 2024
    Q:their is two model in store, Internet #310224167Model #MR01Store SKU #1004497803 and Internet #310224175Model #MR01NStore SKU #1004497804 what different between this two? BRegards
    by|Jul 2, 2023
    1 Answer
    Answer This Question

    A:  Hi Sunny - these models are different depending on the model lock they are replacing. Models ML01/MR01 the knobs are connected to the faceplate and there are no screws on the exterior side of the faceplate/door. Models ML01N/MR01N have a spindle that runs through the door and connects the knobs from both sides (separate from faceplate) and has 4 screws on the exterior of the door. The models with "L" are for Left handed door installation, and models with "R" for right-hand door installations. Thanks!

    by|Aug 1, 2023
      Q:On the mortise lock itself, what is the distance between the centers of the square door handle hole, and the hold for the lock cylinder? I'm hoping to use this lock with my antique plate, which has a 3.25 inch measurement between centers.
      by|Jun 5, 2023
      0 Answer
      Answer This Question
      Q:Can you enter without a key or is the key always required to open the door from the outside?
      by|Jun 2, 2023
      1 Answer
      Answer This Question

      A:  Hi Bob - there is a toggle switch/button on the side trim of the lock that withholds the latching mechanism so you are able to enter without a key. Be safe to toggle back to always locked when not in use. Thanks!

      by|Jul 5, 2023
        Showing 1-4 of 14

        Customer Reviews

        4.2 out of 5

        • 4.2 out of 39 reviews
        • 0% recommend this product
        Filter by:
        Showing 1-10 of 39 reviews
        The lock set was easy to install. I had no issues opening and closing with the key. I purchased at a decent price compared to other sites.
        • Verified Purchase
        Key Broke inside the cylinder :(
        very bad experience. I was trying to replace the entry door with the lock. and the key was broke inside the cylinder while i was try secure the cylinder./ The key was so weak, i can't believed it, the manufactory should give a stronger tool for the job. the was no way for me to take the broke key to cylinder out. I had get a emergency locksmith service for $250. DO NOT BUY THIS LOCK!!!!!
        Response from THD-CSOMar 20, 2024
        We're sorry to hear that your purchase failed so quickly. We encourage our customers to reach out to us directly if they ever experience any issues upon purchasing. Please feel free to reach out to us directly at (908) 964-3427 or sales@griptighttools.com, so we can have assist you further.
          Permanent attached knobs covering screws
          Terrible design. Ordered online. Flimsy feel. The knobs are permanently attached but the assembly screws are behind the knob. A knob blocking access to screws is not unusual, but typically the knob can be removed to access the screws. I went to the manufacturer’s site to verify. Package lacks instructions for reversing, but I found others had shared online. With this design you’re forced to finger turn each screw and attempt to tighten with a screwdriver at 45 degree angle. Would not recommend.
            • Verified Purchase
            • Verified Purchase
            Haven’t gotten it put on yet! Will let you know.
            • Verified Purchase
            • Verified Purchase
            The salesman sold me the wrong sized lock for my door and it was returned the next day.
            • Verified Purchase
            • Verified Purchase
            Lock works great, easy to install.
            • Verified Purchase
            Showing 1-10 of 39 reviews