American Lock A5200 Solid Steel Padlocks offer the highest protection and are the strongest padlocks available. A5200 Rectangular Padlocks from American Lock are suggested for securing gates, sheds, truck and van doors, industrial machinery and construction equipment. These American Lock security padlocks have hardened, triple-plated steel bodies to resist break-in attempts, corrosion, rust and debris. The stainless steel double ball locking mechanism provides more assurance in the padlock's strength and performance. American Lock A5200 Solid Steel Locks are also rekeyable, which allows you to replace the cylinder and shackle, making them easy to service.