Master Lock 1KALJ-0303 Padlock Keyed Alike 0303

Product Description

The MASTER LOCK 1KALJ-0303 is a keyed-alike padlock sized at 1.75 inches, designed for securing equipment, panels, disconnect boxes, and service access points in trade environments. Keyed-alike designation 0303 means multiple locks in a set operate with the same key, reducing the number of keys a technician needs to carry on the job. At 0.65 pounds, the lock is compact enough for everyday carry in a tool bag while providing solid physical security. This padlock is appropriate for HVAC, electrical, plumbing, and pool service professionals who need consistent key control across multiple lock points.

This padlock suits residential and light commercial applications where lockout/tagout procedures, equipment enclosures, or access control are required. The keyed-alike 0303 series is practical for service fleets or crews where multiple technicians need access to the same secured points without carrying separate keys. Typical installation scenarios include securing electrical disconnect panels, HVAC unit enclosures, gate hasps, and storage cabinets at job sites.

Key Features

• Keyed-alike designation 0303 allows multiple locks to operate with a single shared key
• 1.75-inch body size fits standard hasps, staples, and padlock-compatible hardware
• Compact and lightweight at 0.65 pounds for easy portability
• Sold individually, suitable for expanding an existing keyed-alike set

Compatibility

Designed as an OEM-style keyed-alike padlock compatible with standard hasps and padlock-ready hardware commonly used in HVAC, electrical, and plumbing lockout/tagout applications.

Installation Notes

Installation requires no tools beyond verifying hasp or staple clearance matches the shackle dimensions of this lock. Before servicing any equipment, follow applicable OSHA lockout/tagout (LOTO) procedures and confirm power, gas, or water supply is isolated at the source. Do not force the shackle into an undersized hasp, as this can damage the locking mechanism. Inspect the lock periodically for corrosion or debris that may affect operation.

Technical Specifications

• Body Size: 1.75 inches
• Keyed Configuration: Keyed Alike 0303
• Weight: 0.65 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 1

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 1KALJ-0303