Model # U 9810

Internet #100161960

Store SKU #633139

Store SO SKU #633139

Prime-Line Aluminum Sliding Window Lock with Single Hex Screw


Aluminum Sliding Window Lock with Single Hex Screw

$393 /each
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Frequently Bought Together

Product Overview

Heavy-duty extruded aluminum lock with tamper-resistant single hex security screw and wrench for use on metal horizontal sliding windows. Securely locks window in closed or ventilating position and helps prevent accidental opening of window by children. For a non-heavy-duty lock see item no. U-9980 or U-9982. For a non-marring lock see U-9820, U-9821, U-10876 and U-10551. For vinyl windows use U-9809 or U-10547.

  • Heavy-duty cast metal construction
  • Securely locks window in a closed or ventilating position
  • Tamper-resistant single hex security screw
  • Helps prevent accidental opening by children
  • Easy to install
  • Includes wrench tool for installation and removal

Info & Guides

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Product Depth (in.)
1.125 in
Product Height (in.)
5.438 in
Product Width (in.)
3.813 in


Builders Hardware Product Type
Window Sash Lock
Finish Family
Silver Metallic
Hardware Included
Key lock
Package quantity
Sliding window lock
Window Repair Type

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.

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Customer Questions & Answers

Are these particular locks suitable for double hung windows?

We have 6 new aluminium framed double hung windows which we want to be able to secure so they will not open from the outside beyond a pre-set point. All the windows have security screens fitted plus our home has a back-to-base alarm system. Would this type of lock be suitable and would they offer sufficient 'final point' security for the windows?
Asked by: Finch
Thank you for your inquiry regarding this item from Prime-Line Products. Yes, these heavy-duty extruded aluminum locks are designed with a tamper-resistant single hex security screw and wrench for use on metal horizontal sliding windows. This device securely locks window in closed or ventilating position. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at
Answered by: primelineProductExpert
Date published: 2016-09-13
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Customer Reviews

Aluminum Sliding Window Lock with Single Hex Screw is rated 4.0 out of 5 by 4.
Rated 5 out of 5 by from Did their job I bought about 20 of these to secure my fathers home after he passed. House was recently broken into, they had to break out the window to get in which they did, however they were using a pry bar and the windows barely budge. If I would have installed them directly above the lower window in stead of smudging a quarter inch or so the windows wouldnt have moved at all. I plan on buying more and putting them on both sides of each window. And replacing the glass with plexiglass. No sense in making it easy for them. As soon as they got in the alarm scared them off, but they had to work for it.
Date published: 2012-12-29
Rated 4 out of 5 by from Excellent inexpensive tamper resistant sliding window lock Easy to use tamper resistant lock for sliding windows. Works on sliding glass doors or any sliding opening with a track to which the lock can attach. I used locks both on upper and lower tracks for added security. Effective, inexpensive solution.
Date published: 2015-04-21
Rated 2 out of 5 by from No thumb screws You have to use a hex wrench (provided). No room to turn hex wrench causes you to have to turn it half way at a time. When you are done, if you lose the wrench, you can't adjust it. I like the thumb screw ones better. Thumb screw ones were not offered on-line. But they are in store.
Date published: 2012-06-05
Rated 5 out of 5 by from good product Installed easily on some sliding windows to prevent the window from being opened fully.
Date published: 2011-09-13
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