Master Lock 6121KALJ-10G010 Keyed Alike Padlock

Product Description

The MASTER LOCK 6121KALJ-10G010 is a keyed-alike padlock designed for use with chains in commercial, industrial, and trade service applications. The lock body measures 2-1/8 inches wide and is finished in black. The hardened shackle measures 5/16 inches in diameter with a 7/8 inch shackle width and 2-1/2 inches of shackle clearance. The keyed-alike configuration allows multiple locks in a set to be operated by the same key, which is a practical requirement when managing access across multiple entry points or securing multiple chain-based anchors on a single job site.

This padlock is suited for securing equipment, gates, storage enclosures, and chain-secured assets in commercial and light industrial environments. The keyed-alike feature makes it a common choice for facilities managers, contractors, and service technicians who need consistent key control across several locks. It is particularly noted for use with chains, as indicated by the product specifications, making it appropriate for securing chain barriers, tow chains, and similar rigging or access-control setups.

Key Features

• Keyed-alike configuration allows one key to operate multiple locks in the same set
• 2-1/8 inch wide lock body provides solid coverage for chain links and hasp applications
• 5/16 inch shackle diameter offers resistance to cutting attempts
• 2-1/2 inches of shackle clearance accommodates a range of chain sizes and hasp thicknesses
• Black finish for low-visibility or color-coded key control applications
• Specified for use with chains per manufacturer application notes

Compatibility

Designed for use with chains as noted in manufacturer specifications. Suitable as a keyed-alike padlock for chain-securing applications in commercial and industrial settings.

Installation Notes

Installation requires no tools beyond verifying the shackle clears the chain link or hasp before closing. Confirm all locks in a keyed-alike set are matched to the same key code before deploying across multiple access points. Inspect shackle and body for damage before placing the lock in service. Do not force the shackle if resistance is felt, as this may indicate a misaligned or obstructed locking mechanism.