Master Lock M1KALFSTS Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK M1KALFSTS is a laminated steel padlock designed for securing gates, hasps, toolboxes, storage units, and other fixed hardware in trade and industrial environments. The body is constructed from layered laminated steel with a chrome-plated finish for corrosion resistance. The shackle is boron carbide, providing hardened cut resistance suited for higher-security applications. The lock ships keyed alike, making it practical for job sites or facilities where multiple locks must open with a single key. A 4-pin tumbler cylinder delivers reliable, consistent actuation under frequent use.

This padlock is well suited for commercial and light industrial settings where access control across multiple points is required. Electricians, HVAC technicians, plumbers, and facilities maintenance crews commonly use keyed-alike padlocks to enforce lockout/tagout (LOTO) procedures or to secure equipment enclosures and storage areas. The compact 1-3/4 inch wide body fits standard hasps and chain links used across trade applications.

Key Features

• Laminated steel body with chrome-plated finish for corrosion resistance
• Boron carbide shackle for enhanced cut resistance in high-security use
• Keyed alike — multiple locks operate with the same key
• 4-pin tumbler cylinder for reliable key operation
• Compact 1-3/4 inch wide body fits standard hasps and hardware
• 5/16 inch shackle diameter with 13/16 inch shackle width

Compatibility

Designed as an OEM-style replacement or direct-use padlock compatible with standard hasps, chains, and lockout hardware accepting a 5/16 inch shackle diameter and 1-3/4 inch body width.

Installation Notes

Installation requires no tools — the shackle inserts and locks into the body by hand. When used for lockout/tagout applications, follow OSHA 29 CFR 1910.147 procedures and ensure all energy sources are isolated before applying the lock. Inspect the shackle and body for wear or corrosion before each use in corrosive or outdoor environments. Do not force the shackle closed if the cylinder does not turn freely, as this may indicate a misaligned hasp or damaged lock mechanism.