Prime Line Products S 4648C Mailbox Lock 3 Cam 5 Pin

Product Description

The PRIME LINE PRODUCTS S 4648C is a 3-cam, 5-pin tumbler mailbox lock designed as a direct replacement for Bommer, Auth Electric, and United locks. The threaded body measures 7/8 inches in diameter and features a brass plated finish. Operation is 90-degree counter-clockwise rotation. Each unit includes one lock and two keys. This lock is installed by locksmiths, property maintenance technicians, and facility managers working on residential or commercial mailbox banks that require a standard cam-style cylinder replacement.

This lock fits mailbox applications where a 3-cam, 5-pin tumbler cylinder with a 7/8-inch threaded body is specified. It is a direct replacement for Bommer, Auth Electric, and United lock cylinders, making it well-suited for multi-unit residential buildings, postal installations, and commercial mailroom cabinetry. The brass plated finish provides a standard appearance consistent with most existing mailbox hardware.

Key Features

• 3-cam design supports standard mailbox latch and cam engagement configurations
• 5-pin tumbler cylinder provides reliable key security for mailbox applications
• 7/8-inch diameter threaded body for direct drop-in replacement fitment
• 90-degree counter-clockwise rotation operation
• Brass plated finish matches most standard mailbox hardware aesthetics
• Includes one lock and two keys per unit

Compatibility

Direct replacement for Bommer, Auth Electric, and United mailbox locks with a 7/8-inch diameter threaded body cylinder.

Installation Notes

Installation is typically performed by locksmiths or qualified maintenance technicians. Before replacing the cylinder, ensure the mailbox unit is accessible and any existing lock is fully disengaged. Use appropriate cam-alignment tools or a flat-blade screwdriver to seat and orient the cam correctly during installation. Verify counter-clockwise rotation engagement before closing the mailbox door.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.