---
product_id: 136595276
title: "Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant"
brand: "fjm"
price: "HK$519"
currency: HKD
in_stock: true
reviews_count: 5
category: "Fjm"
url: https://www.desertcart.hk/products/136595276-combi-cam-combinated-lock-7850r-medium-black-cam-lock-keyless
store_origin: HK
region: Hong Kong
---

# 3-digit pick-proof combo Fits 5/8" material thickness Rust-resistant zinc alloy Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant

**Brand:** fjm
**Price:** HK$519
**Availability:** ✅ In Stock

## Summary

> 🔐 Upgrade your security game with keyless ease and sleek durability!

## Quick Answers

- **What is this?** Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant by fjm
- **How much does it cost?** HK$519 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/136595276-combi-cam-combinated-lock-7850r-medium-black-cam-lock-keyless)

## Best For

- fjm enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Security Upgrade:** Proven pick-proof design slows down intruders, perfect for professionals who value peace of mind.
- • **Built to Last, Rain or Shine:** Durable zinc alloy construction with chrome-plated dials ensures rust resistance and long-term reliability.
- • **Keyless Convenience, Zero Hassle:** Say goodbye to lost keys and hello to instant access with a customizable 3-digit combo lock.
- • **Complete Installation Kit Included:** Comes with multiple cams and mounting hardware for versatile applications from lockers to cabinets.
- • **Universal Fit for Your Security Needs:** Designed to retrofit any standard cam lock, fitting material thicknesses up to 5/8" seamlessly.

## Overview

The Combi-Cam 7850R is a medium-sized, keyless 3-dial combination cam lock crafted from rust-resistant zinc alloy. It fits material thicknesses up to 5/8", includes multiple cams and mounting hardware, and offers 1,000 possible combinations for customizable, pick-proof security. Ideal for lockers, cabinets, drawers, and doors, it provides a hassle-free, durable upgrade to traditional keyed locks.

## Description

Combi-Cam Combination Cam Locks Peace of Mind Security with Keyless Convenience Who wants to hassle with keys? The Combi-Cam retrofits any standard cam lock and converts it into convenient, keyless, security. Set or change your own personal code at any time (must be on current opening code to change). Multiple sizes available Lock up your valuables safely and reliably The Combi-Cam comes with all the cams and hardware required for most applications and available in cylinder lengths from 5/8" up to 1-1/8" to accommodate material thickness from up to 3/8" through thicknesses up to 1-1/8". Download a brochure and spec sheet Key Features 1,000 combinations Retrofits any keyed cam lock Keyless convenience set your own code any time Weather resistant Available in Black or Chrome 5/8", 7/8", 1-1/8", and 1-3/8" cylinders available Mounting hardware included A wide range of Combi-Cam products to serve any need. View larger Easily Set Your Own Code First have the lock set at the current combination and easily set your code to a new one with pushing in the set button with a paperclip. How easy is that? Optionally, during installation, the cylinder can be rotated 180 degrees so that combination can not be changed after installation (change pin does not rotate into view). Applications The Combi-Cam retrofits any standard keyed cam lock application to provide keyless, secure convenience. Popular applications are cabinet doors and drawers, RV compartments, medical carts, kiosks, lockers are more. Tested Over Time The Combi-Cam was the first combination dial cabinet lock on the market with years of durability and reliability. The solid performing Combi-Cam is durable and constructed of a non-ferrous metal making it corrosion resistant in outdoor applications. Available sizes For Material Thickness: 5/8" cylinders fit up to 3/8" material 7/8" cylinders fit up to 5/8" material 1-1/8" cylinders fit up to 7/8" material 1-3/8" cylinders fit up to 1-1/8" material What's in the Box? Combi-Cam Combination Lock, 3/4" pronged washer, stop cam and 3/4" cylinder nut, Cam screw and lock washer, 3 Cams: 3/4" straight cam, 1-1/2" straight cam, 1-1/2 cam with 1/4" offset, instructions, warranty card.

Review: I found this brand recommended on a forum discussion about replacement lock options for their firearm security cabinet. This thing fits my Stack-on/Sentinel cabinet absolutely perfectly. When I ordered it, I was a little worried it wouldn't fit, as some of these, mine included, have the lock recessed slightly into the door. My worries were unnecessary. The thing couldn't fit better if it was custom made. The knob is solid machined aluminum, anodized black, and looks really good. It's reeded surface make it easy to turn against the weight of the 2"x5" steel plate cam on the other side. The only downside is that its tapered shape makes it difficult to use to pull open the door the way you could with the key it was replacing, so I had to install a handle above it as the door is flush fitting and there was nothing else to pull on. I probably could have used a nylon strap or something, but I had a black drawer pull lying around, so I used that, and it looks nice. Compared to having to go dig out the key every time I need to get in the cabinet, the combo lock is great. Some might say that a three digit combo isn't exactly secure, but given that it's replacing a wafer lock, I think its actually a step up. Yes, someone will eventually brute force the combination by trying them one by one, but the previous lock could be picked in about five seconds by someone who knows what they're doing too. The point isn't to keep someone nefarious completely out, it's to slow them down enough that they're less likely to risk taking the time. I don't have a family at home, so I don't need to worry about a bored and curious person with far more time than a burglar playing with it until it opens either. This is to keep casual visitors out more than anything. I wouldn't have bought a cheap steel cabinet if my security needs were greater. I highly recommend this to any other Stack-On/Sentinel owners who need to replace their lock due to a broken or lost key, or just don't want to deal with them anymore. I can get into my cabinet in seconds now as opposed to several minutes before, and locking up when I'm done is almost instantaneous.
Review: No more lost keys. These are great!

## Features

- SPECIFICATIONS - The cam lock has a 7/8” cylinder length and is designed to fit a material thickness of 5/8” . The default combination of the Combi-Cam is always set to all 0s.
- DURABLE AND RUST RESISTANT - These cabinet locks are outfitted with 3 pick-proof chrome plated dials and constructed out of sturdy zinc alloy – the lock won't rust or wear out over time.
- INCLUDED - Combi-Cam 3-dial cabinet lock hardware comes with a 3/4" straight cam, 1-1/2" straight cam, 90 deg (degree) stop cam, 1-1/2" offset cam, and 3/4" wood prong washer.
- 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 | B0048C8TCC |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (158) |
| Date First Available | 14 Aug. 2012 |
| Finish | Chrome Plated |
| Included Components | 3 Different Cams, Pronged Washer |
| Item Package Quantity | 1 |
| Item Weight | 113 g |
| Item model number | 7850R-M-Black |
| Manufacturer | MEI |
| Material | Metal Zinc |
| Number of Pieces | 1 |
| Part Number | 7850R-M-BLACK |
| Product Dimensions | 12.7 x 0.94 x 5.08 cm; 113.4 g |
| Shape | Round |
| Size | 7/8 Inch |
| Special Features | Keyless |
| Style | Metal |

## Product Details

- **Brand:** FJM
- **Item dimensions L x W x H:** 12.7 x 0.9 x 5.1 centimetres
- **Lock type:** Combination Lock
- **Material:** Metal Zinc
- **Special feature:** Keyless

## Images

![Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant - Image 1](https://m.media-amazon.com/images/I/31GQaETmdkL.jpg)
![Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant - Image 2](https://m.media-amazon.com/images/I/41lugd0313L.jpg)
![Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant - Image 3](https://m.media-amazon.com/images/I/61It-wnT7iL.jpg)
![Combi-Cam Combinated Lock 7850R - Medium Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant - Image 4](https://m.media-amazon.com/images/I/61bgx7iGOtL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***O on 8 June 2025*

I found this brand recommended on a forum discussion about replacement lock options for their firearm security cabinet. This thing fits my Stack-on/Sentinel cabinet absolutely perfectly. When I ordered it, I was a little worried it wouldn't fit, as some of these, mine included, have the lock recessed slightly into the door. My worries were unnecessary. The thing couldn't fit better if it was custom made. The knob is solid machined aluminum, anodized black, and looks really good. It's reeded surface make it easy to turn against the weight of the 2"x5" steel plate cam on the other side. The only downside is that its tapered shape makes it difficult to use to pull open the door the way you could with the key it was replacing, so I had to install a handle above it as the door is flush fitting and there was nothing else to pull on. I probably could have used a nylon strap or something, but I had a black drawer pull lying around, so I used that, and it looks nice. Compared to having to go dig out the key every time I need to get in the cabinet, the combo lock is great. Some might say that a three digit combo isn't exactly secure, but given that it's replacing a wafer lock, I think its actually a step up. Yes, someone will eventually brute force the combination by trying them one by one, but the previous lock could be picked in about five seconds by someone who knows what they're doing too. The point isn't to keep someone nefarious completely out, it's to slow them down enough that they're less likely to risk taking the time. I don't have a family at home, so I don't need to worry about a bored and curious person with far more time than a burglar playing with it until it opens either. This is to keep casual visitors out more than anything. I wouldn't have bought a cheap steel cabinet if my security needs were greater. I highly recommend this to any other Stack-On/Sentinel owners who need to replace their lock due to a broken or lost key, or just don't want to deal with them anymore. I can get into my cabinet in seconds now as opposed to several minutes before, and locking up when I'm done is almost instantaneous.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 18 November 2020*

No more lost keys. These are great!

### ⭐⭐⭐⭐⭐ Review
*by E***L on 5 November 2024*

Got this to replace the unlockable knob on my truck bed's storage bin (2021 Ford Maverick). Took a little shaving down of the truck box, but this went in perfect and I can now lock that box with a code. Great extra parts that come with it made it easy to install.

## Frequently Bought Together

- FJM Security Combi-Cam 7850R-M-Black Combination Cam Lock, 7/8" Black Finish
- Frank J. Martin 7850-DC Combi Cam Dust Cover , Black
- Combi-Cam Combinated Lock 7850R - Large Black Cam Lock | Keyless 3-Dial Pick-Proof Security Lock | Metal Locks for lockers, Doors, Drawers, Cabinets, & More | Versatile, Durable, & Rust Resistant

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-24*