Hours Of Operations Master Lock Connecticut Harwinton Master Lock Hours of Operation and Locations in Harwinton, CT 4.8 - 140 votes 1 Locations in Harwinton masterlock.com Master Lock Hours Category: Home & Garden Master Lock - Harwinton, CT 06791 236 Wildcat Hill Rd(860) 245-6116 View Store Details Recommend For You Mattress 1 One Mattress Discounters Mattress Giant Mattress Superstore Mattress Warehouse Maui Divers Jewelry McCoy's Building Supply Merle Norman Cosmetic Studio Miele Modern Bathroom