Prime-Line S 4711 5-Pin Counter Clockwise Mailbox Lock, Steel, Nickel (2-Pack) Ensure secure and reliable access control for your mailbox with the Prime-Line S 4711 replacement lock cylinder. Designed specifically for use with Auth-Florence Vital Series 1570 exterior cluster box units, this high-quality mailbox lock features a 5-pin tumbler mechanism and counter-clockwise rotation for smooth, dependable operation. Built with durable nickel-plated steel, the lock offers excellent resistance to corrosion and wear, making it ideal for long-term outdoor use in various weather conditions. This replacement lock is engineered for convenience and security. The key can only be removed when the lock is in the locked position, preventing users from accidentally leaving the mailbox unlocked. This safety feature ensures consistent security and helps avoid lost or forgotten keys. The lock uses a National keyway (NA-14), providing compatibility with a widely used standard, and is designed to work seamlessly with multiple mailbox models, including C 9200 series units. It is an excellent choice for property managers, postal services, and homeowners looking for a reliable, easy-to-install solution for replacing damaged or lost locks. The Prime-Line S 4711 comes complete with all necessary installation components: 1 lock cylinder, 2 matching keys, 1 retaining clip, and 1 cam nut. Its compact size and round shape allow for easy integration into existing setups without requiring major modifications. Measuring 1.25 inches in length, 3.81 inches in width, and 4.94 inches in height, the lock fits neatly within standard cluster box configurations. The sleek nickel finish provides a clean, professional appearance while enhancing resistance to rust and tarnishing over time. Features - Replacement mailbox lock cylinder designed for Auth-Florence Vital Series 1570 cluster boxes - Counter-clockwise rotation for smooth unlocking action - 5-pin tumbler mechanism for improved security and durability - Key can only be removed in the locked position to prevent accidental unlocking - Includes 1 lock, 2 keys, 1 retaining clip, and 1 cam nut for complete installation - Constructed from nickel-plated steel for long-lasting, corrosion-resistant performance - Compatible with multiple mailbox models, including C 9200 series - Uses National keyway (NA-14) for broad key standard compatibility - No cams included ? ideal for users replacing internal components only - Compact design fits standard cluster mailbox configurations - Easy to install and replace without specialized tools - Ideal for securing residential and commercial mailboxes - Suitable for outdoor use with reliable performance in varying weather conditions Specifications - Brand Name: Prime-Line - Part Number: S 4711 - UPC: 049793247117 - Global Trade Identification Number: 00049793247117 - Product Type: Mailbox Lock Cylinder - Lock Type: Key Lock - Finish: Nickel - Material: Steel - Color: Nickel - Shape: Round - Style: Modern - Number of Keys Included: 2 - Included Components: 1 lock, 2 keys, 1 clip, 1 cam nut - Rotation Direction: Counter Clockwise - Keyway Type: National (NA-14) - Recommended Uses: Securing mailboxes - Product Dimensions: 1.25" x 3.81" x 4.94" - Item Weight: 2.24 oz (0.14 lbs) - Manufacturer: Prime-Line Products (Home Improvement) - Country of Origin: China - Item Model Number: S 4711 - Packaging: Boxed Product Application The Prime-Line S 4711 mailbox lock cylinder is a trusted replacement solution for postal and property management applications. It is especially suited for use in exterior cluster mailbox units where security, durability, and standardized keying are essential. Whether replacing a lost lock in a residential complex, updating aging hardware in a commercial building, or maintaining compliance with postal regulations, this lock delivers consistent, secure performance. Its simple design and included hardware make it easy to install and maintain, ensuring reliable access control for years to come.