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Internet # 100566713

Model # U 9819

Store SKU # 140479

Aluminum, Sliding Window Security Lock (4-pack)

$5.97
  • Secures quickly and easily to your window frame or fin
  • Constructed from extruded aluminum
  • Facilitates window locking at ventilating position
  • View More Details

Free & Easy Returns In Store or Online

Return this item within 90 days of purchase.

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Product Details

About This Product

This is an extruded aluminum lock with steel thumbscrew used on metal horizontal sliding windows. Allows you to lock window in the closed or ventilating position. It can fit up to a 1/8 inch wide rail. Comes in a natural aluminum finish.

Highlights

  • Used to secure sliding window in a closed or ventilating position
  • Thumb turn screw secures lock in place
  • Fits up to 1/8 inch thick rails
  • Extruded aluminum construction
  • NOTE - Please refer to the line art drawing for dimensions and compare with your needs before purchasing (Not Universal)
  • Used as a secondary lock
  • No tools required for installation
  • Please refer to the line art drawing for dimensions and compare with your needs before ordering
  • Return Policy

Product Information

Internet # 100566713

Model # U 9819

Store SKU # 140479

Additional Resources

Shop All Prime-Line

Specifications

Dimensions: H 5.438 in, W 3.813 in, D 0.875 in

Dimensions

Product Depth (in.)

0.875 in

Product Height (in.)

5.438 in

Product Width (in.)

3.813 in

Details

Builders Hardware Product Type

Window Sash Lock

Finish

Aluminum

Hardware Color Family

Metallic

Lock & LatchType

Thumbscrew Lock

Material

Aluminum

Package Quantity

4

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

Goods are warranted against defects in manufacturing for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse.

Questions & Answers

Can you use this as temporary lock on sliding door up high where child can’t get
ByJun 18, 2025
1 Answer | 
Answer This Question

Thank you for your inquiry regarding this item from Prime-Line Products. Use your own discretion. This item is for lighter weight windows than a door. Please review items U 9805 and U 10547 that are used on patio sliding doors.

By|Jun 18, 2025


    How to install this lock on a sliding window
    ByJul 20, 2024
    1 Answer | 
    Answer This Question

    Thank you for your inquiry regarding this item from Prime-Line Products. The lock fits over the outer windows frame lip closest to you. Then the thumb turn is tightened.

    By|Jul 22, 2024


      Does this meet ASTM F 2090
      ByJan 29, 2024
      1 Answer | 
      Answer This Question

      Thank you for your inquiry regarding this item from Prime-Line Products. No, this item does not meet this code standard.

      By|Jan 30, 2024


        Which lock will work on both sides of sliding window when one side is opened about 2"? I do not have a photo to upload because I don't have the answer,that's why I'm asking.
        BySep 3, 2023
        1 Answer | 
        Answer This Question

        Thank you for your inquiry regarding this item from Prime-Line Products. Our goal is to make your shopping experience as easy as possible, but sometimes there are products like this one that requires additional information in regard to the specifics of your existing and/or desired hardware. You can contact the manufacturer directly with your questions regarding this item by calling their toll-free number at (800-255-3505), or by contacting them by email sending photos at CustomerService@primeline.net.

        By|Sep 5, 2023


          Will this work on trailer house windows?
          ByMay 23, 2023
          1 Answer | 
          Answer This Question

          Thank you for your inquiry regarding this item from Prime-Line Products. Please use you own discretion. This item can work for your application if the window frame is 3/16" or less for it to fit onto.

          By|May 23, 2023


            What Isle number And bay number is this item
            ByFeb 22, 2023
            2 Answers | 
            Answer This Question

            “Thank you for your recent inquiry with The Home Depot.” Thanks for your interest in Prime-Line Aluminum, Sliding Window Security Lock (4-pack), the location of this item would depend on your store location. Please contact your local store to inquire. “We appreciate your business and look forward to serving you in the future.”

            By|Feb 23, 2023

              Thank you for your inquiry regarding this item from Prime-Line Products. Some stores may stock these, but not all of them. For verification, kindly look towards the upper left hand corner of the webpage and verify that you are shopping in a local store. If not, click where it reads “You’re shopping [City Name]” to the right of the Home Depot logo square, then click where it reads “Find Other Stores” in the drop-down menu. Once you’ve landed on the city’s store of choice, click on the orange-colored “Add to Cart” link below the item’s photo, or the “Change Pickup Store” link at the bottom of the gray colored area to the left of your screen. This will open a list of stores in your surrounding area that you can choose from, otherwise, please contact an Associate from your local Home Depot Center, or by contacting the HomeDepot.com Customer Service line at (800) 430-3376 regarding your question.

              By|Feb 24, 2023


                Can I order online and pick it up at my local store?
                ByAug 23, 2019
                5 Answers | 
                Answer This Question

                Yes tgis can be ordered online and picked up at the customer desk

                By|Aug 24, 2019

                  Yes you can. There is no shipping charge when you have items shipped to the store.

                  By|Aug 25, 2019

                    Yes, you can order it online and pick it up at your local store. That's how I got mine. That's how I try to do all my shopping at Home Depot. There are some items that cannot be paid for online or put on hold, such as lumber.You must go to the store to actually pick what you want and pay for it in the store. I wouldn't want anyone else picking out my lumber anyway! :) It is so convenient to shop and pay for your item online. Then drive on down to the your Home Depot and pick it up. If there's any line at all, it's always been a short one and a very quick one for me at least. As long as you wait for the email confirmation informing you your order is ready and where to pick it up in the store, there should be no problems.Bring a copy of the email and photo ID to be on the safe side. Oh and if you want someone else to pick up your order, just specify the persons name when you order it. And be sure to have who ever picks it up bring their photo ID. I highly recommend it!

                    By|Aug 27, 2019

                      Thank you for your inquiry regarding this item from Prime-Line Products. Yes. Place your order off the webpage and select the closest store to you so it can be picked up there.

                      By|Aug 26, 2019

                        Yes. You can make that choice when viewing your order in the cart, at checkout online.

                        By|Aug 26, 2019


                          Can you use this product on vertical windows ?
                          ByMay 25, 2017
                          2 Answers | 
                          Answer This Question

                          Hello Denise, and thank you for your inquiry regarding this item from Prime-Line Products. Yes, so as long as the lock fits over the vertical fin. For faster service, be sure to take advantage of the CHAT option located in the lower right-hand corner of your screen, where you can quickly be connected to a representative for assistance. Otherwise, you can contact the manufacturer directly with your questions regarding this item, or any other product manufactured by Prime-Line Products by calling their toll free number at (877) 649-9740, or by contacting them by email at prodtech@primeline.net

                          By|Jul 29, 2025

                            (2)

                            Yes they are easy to use, although yiu wuld have to use it before the opening to secure properly

                            By|Aug 24, 2019


                            Viewing 1-8 of 9

                            Customer Reviews

                            4.4 out of 5

                            • 4.4 out of 142 reviews
                            • 79% recommend this product
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                            Good quality window locks. Just what I needed.
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                            I replaced the screws that came with the locks with flat tip ones. They were difficult to use because of the pointy tip. The lock itself is what I was looking for to secure my windows.
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                            very good product. easy and safe to use.
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                            Compare Key Features

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                            Product Snapshot

                            Ideal for enhancing sliding window security, featuring easy thumb-turn locking and aluminum construction. Perfect for added peace of mind.
                            Ideal for enhanced security, the Safe Mill sash lock prevents unauthorized access while allowing partial ventilation.
                            Ideal for upgrading sliding windows with enhanced security and a fresh look. Diecast construction ensures durability and tighter seals for improved weatherizing.
                            Ideal for child-proofing sliding windows, this keyed sash lock enhances home security with easy key-only access.

                            Locking Mechanism

                            Thumb-turn screw
                            Keyed
                            Cam action
                            Keyed

                            Child Safety Feature

                            Material

                            Aluminum
                            Aluminum
                            Diecast zinc
                            Metal

                            Multiple Locking Positions

                            Tamper-Resistant