Granite Lock Co., Inc.

Located in Quincy, Granite Lock has been serving the Greater Boston area and surrounding communities for 40 years. We are a family-owned bonded and insured full-service locksmith operation providing “rock solid security” to our customers. 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, and lock rekeying, as well as standard replacement and 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!