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The MASTER LOCK CO M176XDLHCCSEN is a resettable combination padlock with an integrated backup key system, designed for demanding outdoor and jobsite security applications. The padlock features a 2 inch boron carbide shackle engineered for extreme weather resistance and high cut resistance. The combination is fully resettable without tools, and a backup key slot provides access if the combination is lost or forgotten. Compatible key blanks are Master Lock K7BOX or Ilco blank M7. This unit is packaged 4 per case and weighs 3.8 pounds per package. Licensed contractors, facilities maintenance professionals, and site supervisors are the primary installers of this hardware.
This padlock is suited for outdoor use in environments where temperature swings, moisture, and corrosion are common concerns. Typical applications include gate hasps, tool storage, utility enclosures, and contractor lockout points on job sites. The resettable combination eliminates the need to track keys across a crew, while the backup key option gives supervisors a recovery path. The extreme weather protection makes it appropriate for year-round outdoor installations in harsh climates.
Backup key blanks for this padlock are Master Lock K7BOX or Ilco blank M7. Designed as a direct-use resettable combination padlock for standard hasp, chain, and gate latch applications requiring an outdoor-rated security device.
Installation requires no special tools — insert the shackle through the hasp or chain link and close until it clicks. Before setting a new combination, consult the reset instructions included with the unit to avoid locking the padlock in an unknown state. Store the backup key in a secure, separate location from the padlock. Follow any applicable site security or lockout/tagout (LOTO) procedures required by OSHA 29 CFR 1910.147 when using this lock in an energy-control program.
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