Restore mailbox security with this replacement 5-pin mailbox lock designed for use with American Device, Auth-Florence, Bommer, Miami-Carey, and other compatible residential, cluster, and community mailbox systems. Featuring an ILCO 1003M keyway and 90°counterclockwise rotation, this lock provides a versatile solution for replacing lost, damaged, or worn mailbox locks. The complete set includes a lock cylinder, five interchangeable cams, two matching keys, a retaining clip, and a retaining hex nut to help accommodate a variety of mailbox configurations. Constructed from durable diecast, brass, steel, and stamped steel components, the lock features corrosion-resistant zinc-plated parts and a brass-finished cylinder face for long-lasting performance and an attractive appearance. A key-retaining feature prevents the key from being removed while the lock is unlocked, helping ensure the mailbox remains secured after use. Designed for easy installation with basic hand tools, this lock is ideal for DIY mailbox repairs. Before ordering, compare your existing lock dimensions, keyway, cam style, and rotation direction to ensure proper fit and operation.