Master Lock M1KASTS Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK M1KASTS is a laminated steel padlock built for trade and industrial applications where security and key control matter. The body measures 1-3/4 inches wide and is constructed from layered laminated steel with a chrome finish for corrosion resistance. The shackle is made from boron carbide, a hardened material that resists cutting and sawing. With a 4-pin tumbler cylinder and a keyed-alike configuration, this lock is suited for service professionals who need multiple locks to operate on a single key. Licensed contractors, facility techs, and service crews commonly specify keyed-alike padlocks for equipment lockout, gate access, and toolbox security.

This padlock is used across HVAC, plumbing, electrical, and general mechanical service environments wherever controlled access and standardized keying are required. The compact body width of 1-3/4 inches fits standard hasps, toolboxes, utility enclosures, and access panels. The keyed-alike designation makes this lock practical for multi-lock setups on the same job site or service vehicle, reducing the number of keys a technician carries. It is sold individually but must be ordered in multiples of 8 to meet the minimum order quantity.

Key Features

• Laminated steel body resists physical abuse and corrosion in field conditions
• Boron carbide shackle provides high-security cut and saw resistance
• Keyed-alike configuration supports multi-lock single-key setups
• 4-pin tumbler cylinder for reliable key control
• Chrome finish adds surface protection against moisture and oxidation
• Compact 1-3/4 inch body width fits standard hasps and enclosure staples

Compatibility

Designed as an OEM-style keyed-alike padlock for use with standard hasps, utility enclosures, toolboxes, and access panels common in HVAC, plumbing, and electrical service applications.

Installation Notes

Installation requires no tools beyond confirming hasp or staple clearance against the shackle dimensions before use. Always verify the shackle clearance of 1 inch and shackle width of 13/16 inches are compatible with the intended hasp before deploying. For lockout-tagout applications, follow OSHA 29 CFR 1910.147 procedures and confirm all energy sources are isolated before applying the lock. Do not force the shackle closed if resistance is felt, as this may indicate a misaligned hasp or foreign obstruction.