Master Lock Co 3UP Universal Pin Padlock 1.5 in

Product Description

The MASTER LOCK CO 3UP is a rekeyable universal pin padlock designed for facilities and job sites that require flexible key control without replacing hardware. The padlock measures 1.5 inches in body width with a 0.75-inch shackle and a shackle diameter of 0.28 inches. It ships without keys, making it compatible with the Master Lock Universal Pin System, which allows a handheld keying tool to set the pinning configuration on site. Licensed locksmiths, facility maintenance techs, and security-conscious contractors install this padlock where master-key or rekeying capability is required without sending locks to a shop.

The 3UP fits into commercial, industrial, and institutional applications where a single keying platform manages multiple locks across a property. Typical install scenarios include equipment rooms, storage lockers, utility enclosures, and access-controlled gates. Because no keys are included at the factory, the end user determines the key combination using the Master Lock Universal Pin System and keying tool 376. Compatible key blanks are the Master Lock K1BOX or the Ilco blank M1.

Key Features

• Rekeyable on site using Master Lock handheld keying tool 376 without sending to a locksmith shop
• 1.5-inch padlock body width fits standard hasp and latch hardware
• 0.75-inch shackle clearance accommodates typical locker and gate hardware
• Ships without keys — key combination set by installer using Universal Pin System
• Compatible with Master Lock key blank K1BOX and Ilco blank M1

Compatibility

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

Installation Notes

Installation and rekeying should be performed by a qualified locksmith or trained facilities technician familiar with the Master Lock Universal Pin System. Before rekeying, verify the correct keying tool (376) is on hand and that the pinning kit matches the desired key combination. No power tools are required for standard installation; the padlock mounts through existing hasp hardware. Follow applicable local security and access-control codes when specifying padlocks for life-safety or restricted-access applications.

Technical Specifications

• Body Width: 1.5 inches
• Shackle Clearance: 0.75 inches
• Shackle Diameter: 0.28 inches
• Keys Included: None
• Package Quantity: 6 per package
• Unit of Measure: EA
• Weight: 2.52 pounds

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 3UP