---
product_id: 231860873
title: "PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle"
brand: "prime-line"
price: "$87753"
currency: COP
in_stock: true
reviews_count: 5
category: "Prime Line"
url: https://www.desertcart.co/products/231860873-prime-line-s-4573-replace-damaged-or-missing-mailbox-locks
store_origin: CO
region: Colombia
---

# 90° counter-clockwise rotation 5/16 in. locking depth Diecast cylinder with brass pins PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle

**Brand:** prime-line
**Price:** $87753
**Availability:** ✅ In Stock

## Summary

> 🔐 Upgrade your mailbox security with style and ease — don’t get left locked out!

## Quick Answers

- **What is this?** PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle by prime-line
- **How much does it cost?** $87753 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/231860873-prime-line-s-4573-replace-damaged-or-missing-mailbox-locks)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Durable diecast cylinder and nickel-plated face ensure long-lasting corrosion resistance and premium finish.
- • **Compact & Sleek:** Modern round design with a slim 15/16 inch reach fits discreetly without bulk.
- • **Precision Security:** Brass pins and spring steel locking clip deliver reliable, tamper-resistant locking performance.
- • **Effortless Operation:** Smooth 90-degree counter-clockwise key rotation for quick, intuitive unlocking every time.
- • **Universal Fit, Zero Hassle:** Replaces multiple major mailbox lock brands with 5 interchangeable cams for seamless compatibility.

## Overview

The PRIME-LINE S 4573 mailbox lock offers a robust, nickel-plated diecast cylinder with brass pins and a 5/16 inch locking depth. Designed for universal replacement compatibility, it features a 90-degree counter-clockwise key rotation and includes 5 cams to fit various mailbox brands. Its durable construction and sleek modern design make it the go-to choice for secure, hassle-free mailbox lock replacement.

## Description

Quickly and easily, replace broken or missing mailbox locks with this mailbox lock. It can replace a variety of original manufacturer’s locks, including American, Florence, Miami- Carey, Bommer, and Auth. It is 9/32” long with 1-3/32” bolt throw, 5/16” locking depth and 15/16” reach. To unlock the small lock, the key must rotate 90 degrees in a counter clockwise direction. This mailbox lock comes with 5 cams that replace locks from any manufacturer, brass pins, a spring steel locking clip, threaded body and a nut for optional cam attachment. With a diecast cylinder construction and brass pins and nickel plated face, this mailbox lock is strong and built to last.

Review: Lost my mailbox key and I got this one, drilled the old one out and installed this, simple and easy
Review: Replaced our mailbox lock after we lost our keys perfectly

## Features

- 5/16 in. locking depth, 15/16 in. reach
- Nickel plated face
- Diecast cylinder with brass pins
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003OSRLDY |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Nickle |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,390) |
| Date First Available | 28 Aug. 2012 |
| Finish | Nickel |
| Included Components | Prime-Line S 4573 Mailbox Lock – Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish |
| Item Package Quantity | 1 |
| Item Weight | 109 g |
| Item model number | S 4573 |
| Manufacturer | Prime-Line Products |
| Material | Brass, Nickel |
| Number of Pieces | 1 |
| Part Number | S 4573 |
| Product Dimensions | 3.18 x 9.69 x 12.54 cm; 108.86 g |
| Shape | Round |
| Special Features | Key Unlock |
| Style | Modern |

## Product Details

- **Brand:** Prime-Line
- **Item dimensions L x W x H:** 32 x 97 x 125 millimetres
- **Lock type:** Key Lock
- **Material:** Brass, Nickel
- **Special feature:** Key Unlock

## Images

![PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle - Image 1](https://m.media-amazon.com/images/I/31c1VkwXGqL.jpg)
![PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle - Image 2](https://m.media-amazon.com/images/I/41EPJPsEznL.jpg)
![PRIME-LINE S 4573 Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish, Nickle - Image 3](https://m.media-amazon.com/images/I/51aGDpt4rOL.jpg)

## Questions & Answers

**Q: Will this replace usps-l-1172c?**
A: It is not an exact replace but is an alternative mailbox lock.

**Q: Are there blank keys available for this lock?**
A: The lock takes a National keyway blank NA-14.

**Q: What is the diameter of the lock cylinder? most other cylinders are 5/8" which are too big for the mailbox hole...?**
A: This item is 3/4".

**Q: how many keys are included?**
A: Two keys are included.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***S on 7 November 2025*

Lost my mailbox key and I got this one, drilled the old one out and installed this, simple and easy

### ⭐⭐⭐⭐⭐ Review
*by S***A on 8 June 2025*

Replaced our mailbox lock after we lost our keys perfectly

### ⭐⭐⭐⭐⭐ Review
*by A***R on 18 September 2019*

While opening my mailbox one day, I broke the key off in the lock. The lock was old and janky anyway; I ordered one of these to replace it with. I chose this lock because the key looks the same as the key from the old lock. For lock replacement, installation was simple: simply remove the old lock, match the locking arm on the old mailbox lock to one of the five included with the set, and fasten the lock to the mailbox using the two included nuts. (A screw was alluded to in the instructions, but the actual device uses a nut instead.) It took about five minutes, including the walk to the box from my apartment and back. As compared to the old, dirty lock that this one replaced, it opens much more smoothly and reliably yet still feels very securely fastened to the door of the box. That said, I am not terribly concerned about the absolute security of this lock: if someone wanted to steal my mail, they would be much more likely to jimmy open the postal lock that opens the whole box at once. This is an easy DIY solution to a common problem that locksmiths or the post office would have charged dozens of dollars to fix.

## Frequently Bought Together

- Prime-Line S 4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)
- Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)
- Prime-Line MP4945 Mail Box Lock, 5-Cam, 5-Pin, 13/16 In. Threaded, Counter-Clockwise (Single Pack)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-11*