Abus 83/55-300 S2 Maximum Security Padlock, Schlage C Keyway

The ABUS 83/55-300 S2 is a maximum security padlock rated at ABUS Security Level 9, fitted with a Schlage C keyway cylinder and a hardened steel body. Unlike the brass-body 83/45 and 83/50 models in the 83 Series, the 83/55 body and shackle are both made from hardened steel, placing it at a higher level of physical attack resistance. The body width is 2-11/64 inches, the shackle diameter is 7/16 inch, and the vertical clearance is 1-7/16 inches. Two keys are included. SKU: 83-55-300 S2.

What separates the ABUS 83/55 from the rest of the 83 Series at Security Level 9

The 83 Series covers three body sizes: the 83/45 and 83/50 use solid brass bodies, while the 83/55 uses a hardened steel body throughout. Hardened steel resists drilling, sawing, and impact attacks more effectively than brass at equivalent dimensions, which is why the 83/55 carries a Security Level 9 rating against Level 8 for the brass-body models in the same series.

The 7/16-inch shackle diameter is the largest in the standard 83 Series range, providing greater resistance to bolt cutter attack than the 5/16-inch shackle on the 83/45 or the 3/8-inch shackle on the 83/50. The wider 2-11/64-inch body also means the shackle is more deeply housed when closed, reducing the exposed shackle area that a cutting tool can engage. For the full ABUS 83 Series range including the brass-body configurations, the ABUS padlocks catalog covers all available models.

How the Schlage C keyway and Z-Bar cylinder work on the 83/55-300 S2

The Schlage C keyway is one of the most widely specified commercial key profiles in the United States, found in offices, schools, healthcare facilities, government buildings, and institutional properties. Fitting the 83/55-300 S2 with a Schlage C cylinder allows this padlock to be keyed into an existing Schlage C system, giving facility managers a single key that covers both door hardware and high-security padlock installations.

The cylinder uses the patented Z-Bar mechanism, which converts the padlock between key-retaining and non-key-retaining operation within seconds and without tools. In key-retaining mode, the key stays in the cylinder until the shackle is fully closed. In non-key-retaining mode, the key can be withdrawn at any point regardless of shackle position. The same padlock handles both operational requirements. For Schlage C-compatible key blanks and cylinder components, the cylinders, cores, and keys section covers the available options.

Where to use the ABUS 83/55-300 S2 maximum security padlock

The 83/55-300 S2 is suited to high-value asset protection where both the body and shackle need to resist determined physical attack. Typical applications include securing perimeter gates on industrial sites, heavy-duty storage unit doors, equipment yards, vehicle fleet parking areas, warehouse access points, construction site containers, and switchboard enclosures where the padlock is the primary barrier and replacing it after a failed attack is not an acceptable outcome.

The 4-inch overall height and 1-inch body depth give the 83/55 a larger profile than the brass-body models, which suits oversized hasps and heavy-gauge chain links. Confirm the hasp staple opening accepts a 7/16-inch shackle diameter before ordering. For replacement shackles and accessories compatible with the 83 Series, the padlock parts and accessories catalog covers the available options. For the 83/50-300 S2 with a brass body and Schlage C keyway at Security Level 8, the ABUS 83/50-300 S2 is also stocked. For commercial locks and security hardware across all categories, browse the commercial locks catalog.

Confirm the Schlage C keyway is compatible with the existing key system and that the 7/16-inch shackle diameter fits the hasp or chain hardware before ordering. Two keys are included.