Master Lock Co 1UP Universal Pin Padlock 1.75 in

Product Description

The MASTER LOCK CO 1UP is a rekeyable universal pin padlock designed for facilities, institutions, and trade professionals who manage large keying systems. Measuring 1.75 inches in body width with a 15/16-inch shackle height and a 5/16-inch shackle diameter, this padlock integrates into the Master Lock Universal Pin System. No keys are included — the lock is intended to be keyed on-site using a handheld keying tool. It accepts Master Lock Key Blank K1BOX or Ilco Blank M1 for custom keying at the point of installation.

This padlock is suited for commercial and institutional applications where a large number of locks must be keyed alike, keyed differently, or master-keyed on site. Locksmiths, facility managers, and security contractors use the Universal Pin System to reduce the need for pre-keyed inventory. The 1UP ships without keys, making it a core component of a flexible, field-configurable keying program. It is sold in packages of six units per package.

Key Features

• Integrates with the Master Lock Universal Pin System for field rekeying
• Rekeyable on-site using handheld keying tool 376
• Accepts Master Lock Key Blank K1BOX or Ilco Blank M1
• 1.75-inch padlock body width for standard hasp and door applications
• 15/16-inch shackle height and 5/16-inch shackle diameter
• No keys included — keyed to specification at installation

Compatibility

Designed for use within the Master Lock Universal Pin System. Rekeying requires handheld keying tool 376. Compatible key blanks are Master Lock K1BOX and Ilco Blank M1.

Installation Notes

Installation and rekeying of universal pin padlocks should be performed by a qualified locksmith or trained facility security professional. Before rekeying, ensure the correct keying tool and key blank are on hand — the 1UP requires keying tool 376 and either K1BOX or Ilco M1 blanks. Do not attempt to rekey the lock while it is engaged in a hasp or locking mechanism. Follow the keying tool manufacturer instructions to avoid damaging the pin chambers.

Technical Specifications

• Body Width: 1.75 inches
• Shackle Height: 15/16 inches
• Shackle Diameter: 5/16 inches
• Weight: 3.14 pounds
• Package Quantity: 6 per package
• Unit of Measure: EA
• Keys Included: None

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 1UP