Prime-line Products S 4648 Mailbox Lock

Product Description

The PRIME-LINE PRODUCTS S 4648 is a threaded barrel mailbox lock designed as a direct replacement for several common OEM mailbox lock brands. It uses a 5-pin tumbler cylinder for reliable key security, and the key removes only in the locked position, preventing accidental unlocked removal. The lock ships complete with two keys, a jam nut, a large nut, and three cams, making it ready to install without sourcing additional hardware. Licensed locksmiths, maintenance technicians, and property managers install this type of hardware in residential and commercial mailbox applications.

This lock is suited for residential cluster mailboxes, apartment mailbox banks, and freestanding pedestal mailboxes that use a threaded barrel mounting configuration. It is specified as a replacement for locks originally supplied by Bommer, Florence, Cutler, American Device, and Miami Carey. The included cam set covers multiple door configurations, reducing the need for separate cam orders on most standard installations.

Key Features

• 5-pin tumbler cylinder for improved key security over lower pin-count alternatives
• Key removes only in the locked position, preventing unintended open-position key withdrawal
• Threaded barrel design allows direct installation into standard mailbox lock holes without additional adapters
• Includes two keys, jam nut, large nut, and three cams for a complete installation kit
• Direct replacement for Bommer, Florence, Cutler, American Device, and Miami Carey mailbox locks

Compatibility

Designed as a direct OEM-style replacement for mailbox locks originally manufactured by Bommer, Florence, Cutler, American Device, and Miami Carey, using a standard threaded barrel mounting configuration.

Installation Notes

Installation is typically performed by a locksmith, maintenance technician, or qualified property manager. Remove the existing lock cylinder before installation and ensure the mailbox door is accessible and unlocked. Use the included jam nut and large nut to secure the barrel firmly in the door panel, and select the appropriate cam from the included set to match the existing door latch geometry. Do not overtighten the mounting nuts, as this can distort the barrel and impair cylinder rotation.

Technical Specifications

• Pin Tumbler Count: 5-pin
• Mounting Style: Threaded barrel
• Keys Included: 2
• Hardware Included: Jam nut, large nut, 3 cams
• Weight: 0.15 pounds
• Sold As: Each

Standard Information

• Brand: PRIME-LINE PRODUCTS
• Manufacturer Part Number: S 4648