For over 42 years, SNZ Locksmith Inc has been Nassau Counties #1 Locksmith... SNZ Locksmith Inc is an Authorized U.S.Lock Dealer. From Residential, to Auto, to Commercial, to Industrial, SNZ does it all! Locked out? Call us anytime 24 Hours a day 7 days a week! We offer Complete Door and Lock Service,...Auto Lock Needs and All Types and Sizes of Safes! Corporate Accounts are Welcome! Call SNZ today at 516-294-5600.