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The Master Lock No. 494 used to lockout a 480 or 600 volt circuit breaker.

Master Lock No. 495 used as a multi-pole lockout device.

The Master Lock No. 496B Universal Wall Switch Cover locks out both toggle and Decora™ switches. The patented design ensures switch stays lo...

The Master Lock No. 497A Heavy Duty Safety Tags feature durable polyester laminate to resist water, grease and extreme temperatures. The hea...

The Master Lock No. 497A Heavy Duty French/English Safety Tags feature durable polyester laminate to resist water, grease and extreme temper...

The Master Lock No. 497A Heavy Duty English/Spanish Safety Tags feature durable polyester laminate to resist water, grease and extreme tempe...

The Master Lock No. 498A Latch Tight™ Portable Group Lock Box features a durable powder-coated finish with an easy-to-grip, ergonomic handle....

Pack of 4 The Master Lock No. 4D Laminated Padlock features a 1-9/16in (40mm) wide laminated brass body for maximum streng...

The Master Lock No. 4LH Laminated Brass Padlock, features a 1-9/16in (40mm) wide laminated brass body offering excellent corrosion resistance, ma...

The Master Lock No. 5 Powder Coated Laminated Steel Padlocks are designed for robust security in industrial settings. Laminated Steel padlo...

Pack of 4 The Master Lock No. 500D Laminated Padlock features a 1-3/4in (44mm) wide laminated steel body for strength and ...

The Master Lock No. 503RED Latch Tight™ Group Lockout Box, red, accepts 14 padlocks or lockout hasps and can be mounted to the wall or carri...

The Master Lock No. 503YLW Latch Tight™ Group Lockout Box, yellow, accepts 14 padlocks or lockout hasps and can be mounted to the wall or ca...

The Master Lock No. 506 Grip Tight™ Circuit Breaker Lockout combo pack includes one 491B and one 493 Grip Tight™ circuit breaker lockout. Th...

Pack of 4 The Master Lock No. 517D Laminated Padlock features a 1-3/4in (44mm) wide laminated steel body for strength and ...

Pack of 4 The Master Lock No. 5400D Portable Lock Box features a 3-1/4in (83mm) wide metal body for durability. The portab...

Pack of 4 The Master Lock No. 5401D Wall Mount Lock Box features a 3-1/4in (83mm) wide metal body for durability. The wall...

Pack of 2 The Master Lock No. 5406 Portable Lock Box features a 2-3/4in (70mm) wide metal body for durability. The...

Pack of 4 The Master Lock No. 5420D Portable Universal Lock Box features a 2-7/8in (72mm) wide metal body for durability. ...

Pack of 4 The Master Lock No. 5422D Portable Push Button Lock Box features a 3-1/8in (79mm) wide metal body for durability...

Pack of 4 The Master Lock No. 5423D Wall Mount Push Button Lock Box features a 3-1/8in (79mm) wide metal body for durabili...

Pack of 4 The Master Lock No. 5424D Portable Light-Up Dial Lock Box features a 2-7/8in (72mm) wide metal body for durabili...

Pack of 4 The Master Lock No. 5425D Wall Mount Light-Up Dial Lock Box features a 2-7/8in (72mm) wide metal body for durabi...

The Master Lock No. 5440EC Bluetooth® Portable Lock Box features a 3-1/4" (83mm) wide metal body for durability and a fully removable shackle for...