Master Lock 3KALF-3755 Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK 3KALF-3755 is a laminated steel padlock designed for securing equipment, storage areas, and access points in commercial and industrial settings. Built with a laminated steel body finished in silver, this padlock measures 1-9/16 inches wide and features a 9/32-inch shackle diameter with 1-1/2 inches of shackle clearance. It ships keyed alike to key number 3755, making it a practical choice for coordinated locking systems where multiple padlocks must open with the same key. Tradespeople and facility managers typically specify keyed-alike padlocks to reduce key load across a job site or property.

This padlock is suited for use in HVAC, electrical, plumbing, and general trade environments where lockout/tagout procedures, equipment enclosures, tool storage, or site access control require reliable hardware. The keyed-alike configuration is particularly useful on multi-unit installs where a single key needs to operate all locks on a panel room, gate, or storage cabinet. The laminated steel construction resists prying and tampering in light- to medium-duty outdoor and indoor applications.

Key Features

• Laminated steel body provides resistance to cutting and prying in light- to medium-duty applications
• Keyed alike to key number 3755 for coordinated multi-lock systems
• 1-9/16 inches body width fits standard hasps and staples
• 9/32-inch shackle diameter with 1-1/2 inches of clearance accommodates most hasp and chain configurations
• Silver finish for easy visual identification in mixed-lock environments

Compatibility

Designed as an OEM-style replacement or direct addition to keyed-alike padlock sets using key number 3755. Fits standard hasps, door staples, and chain links sized for a 9/32-inch shackle.

Installation Notes

Installation requires no tools beyond the key. Confirm the hasp or staple opening is sized to accept a 9/32-inch shackle before installation. For lockout/tagout applications, verify compliance with OSHA 29 CFR 1910.147 and any site-specific energy control procedures. Do not use in applications requiring a higher-security rating than a laminated steel padlock is rated to provide.

Technical Specifications

• Body Style: Laminated steel
• Body Width: 1-9/16 inches
• Material: Steel
• Color: Silver
• Keying: Keyed Alike
• Key Number: 3755
• Shackle Diameter: 9/32 inches
• Shackle Clearance: 1-1/2 inches
• Weight: 0.49 pounds
• Sold As: Each

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 3KALF-3755