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The MASTER LOCK CO 5UPLF is a 2-inch universal pin padlock designed for use with the Master Lock Universal Pin System. The padlock ships without keys and is intended to be keyed on-site using a handheld keying tool (tool 376) or rekeyed using compatible key blanks. The shackle measures 1-1/2 inches in length with a 3/8-inch diameter, offering a solid, adjustable-security option for facilities, fleet, or access-control applications where a master-key or rekeying program is in place. Licensed locksmiths, maintenance supervisors, and security-system technicians are the primary installers.
This padlock is suited for commercial and industrial environments where multiple locks must be keyed alike or keyed differently within a single master-key system. Its universal pin design allows field rekeying without returning the lock to a shop, making it practical for large facilities, construction sites, and fleet management operations. It is sold individually and packaged in units of six per case. No keys are included in the box.
Compatible with the Master Lock Universal Pin System. Rekey using handheld keying tool 376. Accepts Master Lock key blank K1BOX or Ilco blank M1. No other specific model or system compatibility was stated in the product data.
Installation and rekeying should be performed by a qualified locksmith or trained maintenance technician familiar with pin-tumbler lock systems. Before rekeying, ensure the lock is unlatched and the shackle is open. Use only the designated keying tool and approved key blanks to avoid damaging the pin chambers. Follow all applicable facility security protocols when integrating this lock into a master-key program.
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