Expert Commercial & Industrial
Locksmith Since
1972

Since 1972 Northwestern has worked to protect our clients and their property using the best available hardware and electronics. We will continue to advance the art of protection as the industry changes and bring to our clients the best resources to do the job. If you're looking for an expert factory-trained commercial or industrial locksmith, call (262) 542-6377 today!

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Dependable Factory-Trained Commercial Locksmith

Locksmiths aren't just for opening things! Northwestern Lock Service is dedicated to providing exceptional locksmith services, including lock replacements, hardware repair, and hardware inspections. We understand that as a business owner protecting your assets is one of your top priorities. Since 1972 Northwestern Lock has been helping business owners protect their property and ensure fire compliance throughout Southeast, WI, and the surrounding areas. Our experience, efficiency, and factory-trained knowledge allow us to help protect your building so you can focus on running your business. Whether you're looking for new lock hardware, key replacements, lock changes, or other commercial locksmith services, our team has the knowledge, skills, and passion for getting the job done right the first time. For more information or to discuss your locksmithing needs, call our dedicated team today at   (262) 542-6377.

Our thanks to all who have been with us for the long haul. Watch us grow into the next half century!

It has been over 50 years since we started this little operation in West Allis, on 76th & Becher St. Photo right is the original shop. Over the years we have moved several times, finally ending up here in Waukesha. We would like to thank our hundreds of loyal clients for their patronage over the years, and look forward to serving many more new clients in the coming years. You can expect Northwestern to continue our high degree of professionalism and detail we have always provided.

Prioritizing Helping Businesses Stay Protected

As a full-service commercial locksmith, Northwestern Lock offers lock and key services any business might need. Call (262) 542-6377 if you need any of the following.

  • Lock Installations
  • Lock Upgrades
  • Deadbolt Installations
  • Lock Repairs
  • Door Hardware Repairs
  • Safe Combination Changes
  • Master Key Systems
  • Restricted Key Systems
  • Access Control Systems
  • Keyless Entry Systems
  • Panic Exit Installations or Repairs
  • Interchangeable Core Systems

Businesses We Service

Storefronts

Storefronts

Shopping Malls

Shopping Malls

Retail Shops

Retail Shops

Restaurants

Restaurants

Some of Our Services & Lines We Carry

  • All brands of locks sold, changed, repaired and installed.
  • Arrow Lock - Standard types.
  • Arrow Interchangeable Core Locks. (Compatable with most Best type cores.)
  • BEST Interchangeable Core Locks,Cores, rekeying and servicing. Your Best contact lost? Call us for service, we are trained by Best and have over 35 years of experience in this area. Control keys can be furnished if needed!
  • Best is now available thru our regular suppply chain, so we can furnish OEM Cores and Locks to service your present BEST LOCKING SYSTEM.
  • Detex Exit alarms - ECL230D - EAX500 - V40 Panic Exit Devices.
  • Emhart - Corbin - Russwin.
  • Kwikset.
  • L C N Door closers.
  • L S D A Locks and Hardware - The low cost dependable import - Our exclusive line!
  • Master Lock - Commercial Door Key Hardware, available in SC-1 and KW-10 keyways and Master Padlocks .
  • Mul-T-Lock - The Interactive 10 pin cut within a cut Locks.
  • Schlage Lock - Primus One Plus Locks - Everest Locks, Everest 29 System.
  • Von du Prine Exit hardware.
  • Weiser Lock
  • Yale Locks
  • Alarm Lock Trilogy T-2 and T-3 series electronic locks.
  • Burglar Bars and Lock Guards installed.
  • Deadbolts R US -- Need one installed? - SAME day service on most lines.
  • Don Jo Door Reinforcements and Latch Guards..
  • Interchangeable core locks (IC) serviced. SFIC (Best and Arrow type) LFIC (Schlage and Yale type)
  • Kaba Simplex 1000 series - 3000 series - E-Plex 3000 series - E-Plex 5000 series - 7100 series Keyless Mechanical Deadbolts.
  • Keys of most any type, call and ask if we can make yours. We make a lot of speciality keys like Medeco, Chicago Ace, and bank safe deposit keys. We also make the old fashioned bit and barrel keys. Keys made while you wait. Call us!
  • LCN 4040 - 1260 Type Door closers installed.
  • Locks rekeyed, walk in service available. Call us!
  • Masterkeying - We can establish a new system or work with or expand your existing work. OEM keying for door and hardware companies as well.
  • Padlocks of all types, commercial type rebuilt.
  • Parts R US - Call and ask. If we don't have it in stock, we can either order it out or make it here in our shop.
  • Safes, sold - serviced - Combinations changed both mechanical and electronic.
  • S & G 6730 Mechanical Safe Locks - S & G 4440 Safe Deposit Locks - 5700 type Mosler Safe Deposit Locks - 17505 Diebold Type Locks. Also in house Bullseye Replacement locks. WE can rekey these if you wish - Keys made for lost keys.
  • Utility Locks
  • Cam Locks - 3/8" to 1 7/8"
  • Desk / Drawer Locks
  • File Cabinet Locks
  • Mail Box Locks - Both apartment gang types and postal cluster box types. We have the new D4300 and D4301 keys for the new postal locks.
  • Locking Handles for trailers or cabinets
  • Sliding Door Locks - Window Locks
  • Chicago Lock - Fort Lock - National Lock - Timberline - Comp X Locks
  • Trine Electric Strikes.
  • "JUNK" - we have over 40 years worth of old parts and other take off stuff in the bins around here. We may just have your old part someplace in house. It may take a major dig, but I bet I can find your old part.
  • If you don't see what you are looking for, see page 3 below, or drop me a line.

Our thanks to all who have been with us for the long haul. Watch us grow into the next half century!

It has been over 50 years since we started this little operation in West Allis, on 76th & Becher St. Photo right is the original shop. Over the years we have moved several times, finally ending up here in Waukesha. We would like to thank our hundreds of loyal clients for their patronage over the years, and look forward to serving many more new clients in the coming years. You can expect Northwestern to continue our high degree of professionalism and detail we have always provided.

Keeping your Commercial or Industrial Property Safe

We now have our new road unit on the property! This carries the 1986 Aerostar interior, and is real beauty. A full shop on the road, with on board 110 volt power. Along with our new lines, we are ready to service YOU!


Our new lines are in house. We now have the Everest 29 System, and the new Master Lock door hardware. The Best Interchangeable Core lock products are now available thru our regular lock suppliers, so we can handle your order easier.

For Commerical & Industrial Locksmith Services

Call us at (262) 542-6377  to find out what hundreds of purchasing managers, plant engineers, building and grounds managers and landlords know - Northwestern can save you money while protecting your operations.

We Are Factory Trained In

  • Alarm Lock Trilogy Locks
  • Best Interchangeable Core Locks
  • Detex Exit Hardware
  • LCN Door Closers
  • LSDA Hardware
  • Mul-T-Lock
  • Simplex - Kaba Simplex - E-plex
  • Schlage Primus - Everest - Everest 29

Ask if your service tech or locksmith is factory trained, if not, call us!