Service & Support
FAQs
How-To & Instructional Videos
468L - Seal Tight? Handle-Off Ball Valve Lockout
491B & S806 - Ball Valve Lockout
Master Lock Lockout/Tagout Video
Master Lock S100 ? Lockout Leash?
Master Lock S2029 ? Aircraft Power Receptacle Lockout
Master Lock S2394 ? Mini Circuit Breaker Lockout
Master Lock S2394 ? Mini Circuit Breaker Lockout
Master Lock S3068 ? Seal Tight? Handle-on Ball Valve Lockout
Master Lock S3068 ? Seal Tight? Handle-on Ball Valve Lockout
Master Lock S3081 ? Adjustable Ball Valve Lockout
Master Lock S3081 ? Adjustable Ball Valve Lockout
Master Lock S3821 - Grip Tight Plus Circuit Breaker Lockout
Master Lock S3822 - Grip Tight Plus Circuit Breaker Lockout
Master Lock S3823 - Grip Tight Plus Circuit Breaker Lockout
Master Lock S3900 ? Pneumatic Lockout
Master Lock S3900 ? Pneumatic Lockout
Master Lock S3910 ? Pressurized Gas Valve Lockout
Master Lock S3910 ? Pressurized Gas Valve Lockout
Master Lock S3920/S3921 ? Butterfly Valve Lockout
Master Lock S3920/S3921 ? Butterfly Valve Lockout
Master Lock S806 ? Cable Lockout
Master Lock S806 ? Cable Lockout
Master Lock Safety 487 and 488 ? Rotating Large Electrical Plug Lockout
Master Lock Safety 487 and 488 ? Rotating Large Electrical Plug Lockout
Master Lock Safety S1800, S180 and S1900 ? Deluxe Lockout Station
Master Lock Safety S1800, S180 and S1900 ? Deluxe Lockout Station
Downloads & Related Information
Customer Experiences
"75 mph winds during a storm knocked down a HUGE pine tree in my back yard - directly on my shed. Miraculously my 1986 Harley inside was fine. I was so proud to see my Master Lock still holding tight in the hasp with the entire shed collapsed. These are the only locks I would ever use."— John @ Levittown, NY Full Story
""— Michael @ Missoula, MT Full Story
""— Justin @ Menasha, WI Full Story