Master Lock Company LLC

Group Lock Box meets industrial security needs.
Agricultural & Farming Products

Group Lock Box meets industrial security needs.

Safety Series(TM) Group Lock Box No. 498A facilitates lockout of large process and production equipment. It allows for each lockout point to be secured by one designated lock. Accompanying keys for those locks are captured by placing them inside steel box. After each authorized employee places his/her padlock on unit, captured keys cannot be removed, nor equipment re-energized, until all...

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Safety & Security Equipment

Red Gate Valve Lockouts work in tight spaces.

Available in 5 sizes, Safety Series(TM) red gate valve lockouts handle valve handle diameters of 1-13 in. They rotate outward to close, then return to half-moon position and nest within each other for storage. Up to 4 workers can apply their personal safety padlocks, and dielectric Xenoy thermoplastic covers are chemical-resistant. Products come with visible, permanent, erasable labels so that...

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Fasteners & Hardware

Lockout Products are convenient and easy to use.

Safety Series(TM) includes electrical plug and adjustable cable lockouts; modular lockout kits; snap-on safety hasps with erasable LO/TO identification label; lockout wall stations; and identification tags and labels. Gate valve lockouts rotate outward to close, and their covers return to half-moon position and nest within each other. Series also includes single piece ball valve lockouts, circuit...

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Lockout Hasp offers high visibility.
Safety & Security Equipment

Lockout Hasp offers high visibility.

Safety Series(TM) Snap-On Lockout Hasp No. 427, featuring spring-loaded locking arm, remains secure to lockout points until last padlock has been removed. Anodized aluminum and stainless steel construction provides corrosion-resistance and strength. Bright red hasp has highly visible, permanent and erasable LO/TO label to identify authorized user for each job.

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Lockout Kits fit specific applications.
Safety & Security Equipment

Lockout Kits fit specific applications.

Safety Series(TM) Lockout Kits consist of lightweight lockout carrying cases with modular, translucent storage trays and high-use components. Separate compartments allow for grouping and storage of padlocks and hasps, valve lockout devices, and electrical lockout components. Personal lockout kits, for individual employee use, come keyed-alike for single-key convenience, while group lockout kits...

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Key Control System includes added cylinder lock.
Fasteners & Hardware

Key Control System includes added cylinder lock.

Model MLÂ-® Key Control System eliminates risk of unauthorized key copies being made. Exclusive range of key cuts, produced from protected, proprietary key blanks, is available with each system. Control system allows creation of numerous one-of-a-kind virtual keyways, and permits each registered end-user facility to dedicate specific operating keys for that facility only. Cylinder is offered...

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Cable Lock protects tools and equipment.
Fasteners & Hardware

Cable Lock protects tools and equipment.

Python(TM) No. 8413 adjustable locking cable is suitable for protecting ladders, power tools, cargo racks, and other outdoor equipment. It has 6 ft by 10mm vinyl coated braided steel cable with cinch-locking body that provides infinite locking positions along length. Locking cam allows easy cinching for tight fit, while molded bumper/grip protects against scratching. Removable wafer cylinder...

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