Master Lock A40KA-65478 Steel Keyed Alike Padlock

Product Description

The MASTER LOCK A40KA-65478 is a steel-bodied padlock designed for keyed-alike applications where multiple locks must operate on the same key. The rectangular body measures 1.5 inches wide and 0.75 inches thick, built around a tubular 5-pin cylinder for reliable, tamper-resistant operation. The shackle is constructed from boron alloy, offering hardened cut resistance. With a shackle diameter of 0.25 inches, shackle width of 0.75 inches, and shackle height of 1 inch, this lock fits standard hasp and staple hardware commonly found in industrial, commercial, and trade service environments. Installation requires no tools beyond the keying setup arranged at point of purchase or through the manufacturer.

This padlock is suited for securing equipment enclosures, tool storage, gate hasps, and lockout/tagout (LOTO) stations in commercial and light industrial settings. The keyed-alike configuration is particularly useful for facilities managers, service contractors, and tradespeople who need to standardize key control across multiple lock points without carrying multiple keys. It is a practical choice for HVAC, electrical, and plumbing service vans, job site storage boxes, and panel room access points.

Key Features

• Keyed-alike configuration allows one key to operate multiple locks of the same keying lot
• Steel body construction for durable, corrosion-resistant performance
• Boron alloy shackle provides hardened resistance to cutting and sawing
• Tubular 5-pin cylinder for pick-resistant locking action
• Rectangular body profile fits standard hasps and staple hardware
• Compact 1.5-inch body width suits space-limited applications

Compatibility

Designed as an OEM-style replacement or direct-use padlock compatible with standard hasp, staple, and lockout/tagout hardware accepting a 0.25-inch shackle diameter.

Installation Notes

This padlock is installed by tradespeople, facilities personnel, and service technicians without special tools. Before securing any electrical enclosure or panel, confirm all circuits are de-energized per NFPA 70E lockout/tagout procedures. Ensure the hasp or staple opening is compatible with the 0.25-inch shackle diameter and 0.75-inch shackle width before installation. Do not force the shackle into undersized hardware, as this can damage the locking mechanism.