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Call Us Today
(262) 542-6377
Call Us Today
(262) 542-6377


Since 1972 Northwestern has worked to protect our clients & their property using the best available hardware and electronics. We will continue to advance the art of protection as the industry changes & bring to our clients the best resources to do the job.
In addition to our servies, we are the local "Parts R US!" . We may just have your old part someplace in house. It may take a major dig,thru our 40 years of saved stuff, but we bet we can find your old part.
We Are Factory Trained and Proud Members of The Associated  Locksmiths of America.


We Service All Brands of Locks - Change - Repair and Install and Sell. 

Specializing on Best Interchangeable Cores, Schlage Primus, and Schlage Everest.

Contact Us

Call today for an estimate on all of your locksmith needs. For residential, commercial and industrial services, we are here to help!

LSDA B 610
This is the old B160, now back.

Call Us Today At ♦ (262) 542-6377

See our main web page at for complete information, our product lines and self help!

Deadbolts ON Sale!

Our B610 sale continues. This is the old Schlage B160, now back, made by LSDA. Same lock as before with the same long service durability. Until the end of the year it is only $30.50 each. Installation available for $10.50 each plus $60.00 service call.

Rekey 3 lock Special

Another savings deal - rekey 3 residential locks, any locks for the total price of $90.00, and WE will pay the tax! Additional locks for $10.50 each. Up to 6 keys included. You can't go out to the big box and buy locks cheaper than this!

Mystery Sale

Call us and find out what we have on sale this month! Each month something different will be on sale. It could be locks, door closers, exit devices -  hardware, or just about anything else we normally sell. Subject to change, subject to stock on hand.

Keep your money at home, buy from local busineses and your cash stays in Waukesha County! We are a family owned business for over 43 years.

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  • Mon: 08:00 AM - 05:00 PM
    Tue: 08:00 AM - 05:00 PM
    Wed: 08:00 AM - 05:00 PM
    Thu: 08:00 AM - 05:00 PM
    Fri: 08:00 AM - 05:00 PM
    Sat: 08:00 AM - 12:00 PM

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