Master Lock 1KA-3357 Keyed Alike Steel Padlock

Product Description

The MASTER LOCK 1KA-3357 is a keyed-alike steel padlock designed for applications where multiple locks must operate on a single key. The lock body measures 1-3/4 inches and features dual bumpers to protect the surfaces it secures against marring. The shackle is 5/16 inches in diameter with 15/16 inches of clearance, providing a solid fit for hasps, chains, and tool storage latches. Each unit ships with 2 keys. At 0.56 pounds, it is compact enough for everyday carry applications while maintaining steel construction throughout. Electricians, contractors, and facilities techs commonly deploy this lock for lockout/tagout staging, equipment enclosures, and job-site storage.

The 1KA-3357 is suited for both residential and light commercial applications where keyed-alike sets are required across multiple access points. The keyed-alike designation means every lock in this series sharing the 3357 key code operates on the same key cut, simplifying key management across a crew or facility. Dual bumpers reduce wear on painted or finished surfaces, making this a practical choice for toolboxes, storage units, gates, and panel enclosures in trade environments.

Key Features

• Keyed alike to key code 3357 for simplified multi-lock key management
• Steel body construction for durability in trade and job-site use
• Dual bumper design protects finished surfaces from scuffing
• 5/16-inch shackle diameter with 15/16-inch clearance fits standard hasps and chains
• Includes 2 keys per lock
• Compact 1-3/4-inch body size for versatile fitment

Compatibility

Designed as a keyed-alike replacement or addition to padlock sets using key code 3357, suitable for standard hasps, chains, and latch hardware in residential and light commercial applications.

Installation Notes

No tools are required for standard padlock installation. Ensure the hasp or latch hardware is compatible with a 5/16-inch shackle diameter before installing. For lockout/tagout use, verify the lock meets your site-specific OSHA or facility lockout program requirements. Store keys separately from the lock when not in use to maintain security.

Technical Specifications

• Body Size: 1-3/4 inches
• Material: Steel
• Color: Silver
• Shackle Diameter: 5/16 inches
• Shackle Clearance: 15/16 inches
• Key Type: Keyed Alike
• Key Code: 3357
• Keys Included: 2
• Style: Dual Bumpers
• Weight: 0.56 pounds

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 1KA-3357