Contact Information:

755 Southern Artery
Quincy, Mass 02169

Regular Service Hours:   

Monday - Friday

8:30 AM - 5:30 PM


9:00 AM - 12:00 PM


Emergencies Only

Store/Shop Hours: 

Monday – Friday 

8:30 AM – 5:30 PM


9:00 AM -12:00 PM




"Rock Solid Security for Over 30 Years"

24 Hour Emergency Service

Our Services Include: Antique Lock Service, Automotive, Auto Chip Keys, Commercial, High Security Keys & Locks, Interchangeable Core Cylinders, Master Key Systems, Residential, and Safes

Located in Quincy, Granite Lock has been serving the Greater Boston area and surrounding communities since 1981. We are a family-owned bonded and insured full-service locksmith operation providing "rock solid security" to our customers. Over the years, we have invested in state of the art automobile key programming and computer run key machines in order to stay on top of the rapidly changing technology. We offer expert key duplication, lock repairs, lock rekeying, as well as standard replacement hardware to solid forged brass top quality decorative hardware. We install everything that we sell. We also sell, service and repair burglary and fire safes. Residential or commercial, big or small, Granite Lock does it all!

Our showroom has display mounts as well as safety and security related products along with a large selection of keys for auto, home and business. Our staff will be happy to take the time to answer your questions, giving you individualized attention and service.

We have been in Business Since 1981 and are an Active and Proud member of the Massachusetts Locksmith Association - MLA #460


About Us

The Massachusetts Locksmith Association was established in 1957 to give the locksmiths of the commonwealth a place to network, learn and be a part of a family of fellow locksmith and industry proffestionals. The Association holds its members to standards that ensure friendly cooperation among other locksmiths and conduct themselves in a dignified manner and to avoid using any improper or questionable methods of soliciting professional work.

Contact Us

P.O. Box 550193,
Waltham, MA 02455

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