Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation

Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation

List Price: $7.99
Price: $6.56
Easily replace a broken or lost mailbox lock with our multipurpose replacement mailbox lock. Installation is quick and easy and the lock works on a variety of brands, including: American Device, Auth-Florence, Bommer, and Miami Carey. Additionally, this replacement mailbox lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key in the lock, ensuring the mailbox is locked every time it is used.

The replacement lock includes a total of 5 zinc plated steel cams, brass pins, a spring steel locking clip and 2 keys. It is made of diecast with a nickel plate finish and a counter-clockwise rotation to open.

Be sure to view the manufacturer’s How-To Installation Video also linked on this page.
Architectural Mailboxes 5143 Key Blank for High Security Lock 

Architectural Mailboxes 5143 Key Blank for High Security Lock 

List Price: $12.78
Price: $12.40
Architectural Mailboxes no. 5143 key Blank for high security mailbox lock is used for additional key duplicates. Existing key required to duplicate the key Blank. These specialty key blanks must be duplicated at a locksmith.
Gibraltar Mailboxes MLM16KB1 Marshall Locking Mailbox, Large, Black

Gibraltar Mailboxes MLM16KB1 Marshall Locking Mailbox, Large, Black

List Price: $50.65
Price: $50.64
The Marshall mailbox keeps your mail secure behind durable, galvanized steel constructed walls. This large, locking mailbox restricts access to delivered mail within a concealed locking compartment. The Marshall assists in preventing theft and vandalism by featuring a sturdy cam lock with two keys for access to mail. The delivery mail slot measures at 1.75 inches tall and 10 inches wide to allow deposits of letters, magazines and newspapers. A mail clip is fastened to the interior door and is designed for placing outgoing mail deliveries. In addition, a magnetic closure keeps the door securely in place when not in use. The Marshall comes fully assembled and is compatible with most mailbox posts. Match with any Gibraltar Mailboxes post with the designation letter code C to ensure compatibility. Mounting hardware and post are sold separately.
Compx National Pin Tumbler Lock, Bright Nickel

Compx National Pin Tumbler Lock, Bright Nickel

List Price: $15.80
Price: $12.99
Stainless Steel plug Accommodates up to 3/16 cam (C7120 cam sold separately) Includes spring clip, mounting nut and (3) keys C9100 operates clockwise; Does not include cam for replacement of locks
CompX National C9100 USPS-L-1172C Mailbox Lock (Clockwise) (10 Pack)

CompX National C9100 USPS-L-1172C Mailbox Lock (Clockwise) (10 Pack)

List Price: $115.02
Price: $110.00
New style C9100 USPS postal mailbox lock manufactured by Compx/National. Lock rotation is 90 degrees clockwise. Supplied without locking cam - supplied with parts shown. Each lock supplied with 3 working keys. Each lock includes 3 keys
Salsbury Industries 3590 Standard Replacement Salsbury Lock for Vertical Mailbox Door with Two Keys

Salsbury Industries 3590 Standard Replacement Salsbury Lock for Vertical Mailbox Door with Two Keys

List Price: $10.99
Price: $10.99
Salsbury Standard Replacement Lock - for Vertical Mailbox Tennant Door - with Two (2) Keyed Alike Keys Per Lock.
Salsbury Industries 3690 Standard Replacement Salsbury Lock for 4B+ Horizontal Mailbox Door with Two Keys

Salsbury Industries 3690 Standard Replacement Salsbury Lock for 4B+ Horizontal Mailbox Door with Two Keys

List Price: $10.00
Price: $11.59
Salsbury Standard Replacement Lock - for 4B+ Horizontal Mailbox Tennant Door - With Two (2) Keyed Alike Keys Per Lock.
Defender Security U 9943 (Keyed Different) Drawer and Cabinet Lock – Secure Important Files and Drawers, 7/8”, Diecast Stainless Steel, Fits on 9/16” Max Panel Thickness

Defender Security U 9943 (Keyed Different) Drawer and Cabinet Lock – Secure Important Files and Drawers, 7/8”, Diecast Stainless Steel, Fits on 9/16” Max Panel Thickness

List Price: $4.92
Price: $4.92
This drawer and cabinet lock makes it easy to secure your drawers, important files and small items. It is constructed of diecast and steel components with a stainless steel finish, and features a ¾” outside cylinder diameter with a 7/8” length that will accommodate up to 9/16” thick panels. It’s durable, strong and installation is simple and easy. This drawer and cabinet lock can be mounted to metal or wood, door and/or drawer panels. It comes complete with 3 cams, a trim collar, 2 reversible rotation washers, 2 keys and fasteners. The lock is keyed different with a Yale Y-11 keyway.
Prime-Line Products S 4531 National Keyway Mail Box Lock with 9 Cams and 5 Pin

Prime-Line Products S 4531 National Keyway Mail Box Lock with 9 Cams and 5 Pin

List Price: $9.15
Price: $9.15
This mailbox lock is constructed from die-cast. It features a nickel plated face, brass pins and a spring steel locking clip. These multi-cam assortments can eliminate stocking of individual locks.