---
product_id: 19128849
title: "(4) High Security Pro Series Keyed Alike Padlocks w/8 Keys, 6230NKA-4 w/BumpStop Technology"
brand: "master lock"
price: "NT$10342"
currency: TWD
in_stock: true
reviews_count: 9
url: https://www.desertcart.tw/products/19128849-4-high-security-pro-series-keyed-alike-padlocks-w-8
store_origin: TW
region: Taiwan
---

# 4 keyed-alike high-security padlocks Weather Tough cover for harsh conditions BumpStop tech blocks lock bumping (4) High Security Pro Series Keyed Alike Padlocks w/8 Keys, 6230NKA-4 w/BumpStop Technology

**Brand:** master lock
**Price:** NT$10342
**Availability:** ✅ In Stock

## Summary

> 🔒 Elevate your security game with Master Lock’s Pro Series—because your peace of mind deserves the best.

## Quick Answers

- **What is this?** (4) High Security Pro Series Keyed Alike Padlocks w/8 Keys, 6230NKA-4 w/BumpStop Technology by master lock
- **How much does it cost?** NT$10342 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/19128849-4-high-security-pro-series-keyed-alike-padlocks-w-8)

## Best For

- master lock enthusiasts

## Why This Product

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

## Key Features

- • **Unified Security, One Key:** Four pro-grade padlocks keyed alike with 8 keys—streamline access without compromising safety.
- • **Built for Brutal Conditions:** Exclusive Weather Tough cover and rustproof chrome finish ensure reliable protection rain or shine.
- • **Customizable & Future-Proof:** Removable, rekeyable 5-pin spool cylinder lets you upgrade or re-pin locks as your security needs grow.
- • **Next-Level BumpStop Technology:** Patented cylinder design stops bump key attacks dead in their tracks—security that evolves with threats.
- • **Fortified Against Physical Attacks:** Solid iron shackle shroud and dual ball bearing locking mechanism resist pulling, prying, and cutting.

## Overview

Master Lock’s 4-pack Pro Series keyed-alike padlocks combine advanced BumpStop technology with industrial-grade materials and weather-resistant design. Featuring a 5-pin spool tumbler cylinder, dual ball bearing locking, and a hardened boron alloy shackle, these locks deliver unmatched protection against bumping, picking, and physical attacks. Ideal for commercial and harsh outdoor environments, each lock is backed by a limited lifetime warranty and includes 8 keys for seamless access control.

## Description

FEATURING BumpStop TECHNOLOGY - Lock bumping a surprisingly simple method of breaking in through locked doors and padlocks - is undoubtedly the newest emerging threat to personal property security. And virtually all locks in use today are particularly vulnerable to bumping. Until now. BumpStop Advanced Cylinder Technology employs an innovative, patent pending design which utilizes a unique reverse rake tapered driver pin, high performance springs and tightly machined cylinder chambers. During a bump attempt, this design prevents the transfer of force from the bump key to the pins and therefore blocks rotation of the cylinder so that the lock remains locked.

## Features

- Four (4) High Security Locks Keyed Alike w/ 8 Keys. ProSeries Padlocks are designed for Commercial/Industrial applications. Limited Lifetime Warranty.
- These locks feature the BumpStop Advanced Cylinder Technology. (for explanation see product details below).
- ATTENTION: If you order two 4-packs they will NOT necessarily be keyed the same. To ensure you get two 4-packs keyed alike, you must order the 8-pack.
- Ideal for harsh outdoor conditions - exclusive Pro Series Weather Tough cover protects lock from water, ice, dirt and grime. Solid iron shackle shroud resists harsh physical attacks. The removable cylinder can be replaced or re-pinned. 5 spool pin tumbler cylinder for added pick resistance. Dual ball bearing locking mechanism resists pulling and prying.
- Chrome rustproofing provides longer life. These high security, rekeyable 5-pin cylinders with spool pins are virtually impossible to pick. And a dual ball bearing locking mechanism resists pulling and prying.
- Dimensions: 2-1/2 (64mm) wide round solid steel body, each weighing 1.48 lbs. A 7/16 (11mm) diameter hardened boron alloy shackle with 1-1/8 (29 mm) inside height clearance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Master Lock |
| Special Feature | Key Lock |
| Lock Type | Pin Tumbler |
| Item dimensions L x W x H | 4 x 6 x 3 inches |
| Material | Alloy Steel, Chrome |
| Recommended Uses For Product | Security |
| Style | Industrial |
| Color | Chrome |
| Number of Pieces | 4 |
| Finish Type | Chrome |
| Controller Type | Hand Control |
| Control Method | App |
| UPC | 071649108600 |
| Model Name | 6230NKA |
| Manufacturer | Master Lock |
| Item Weight | 6.16 pounds |
| Product Dimensions | 4 x 6 x 3 inches |
| Item model number | 6230NKA |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 6230NKA |
| Special Features | Key Lock |

## Product Details

- **Brand:** Master Lock
- **Special Feature:** Key Lock
- **Lock Type:** Pin Tumbler
- **Item dimensions L x W x H:** 4 x 6 x 3 inches
- **Material:** Alloy Steel, Chrome

## Images

![(4) High Security Pro Series Keyed Alike Padlocks w/8 Keys, 6230NKA-4 w/BumpStop Technology - Image 1](https://m.media-amazon.com/images/I/71v1X+SKcCL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    All locks worked as expected.
  

*by A***R on Reviewed in the United States on March 29, 2024*

All eight key alike locks worked as expected.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Very large and solid
  

*by T***  on Reviewed in the United States on August 28, 2023*

Measurements are accurate. Works perfectly for a large motorcycle style heavy security chain. Action is smooth, and keys are cut precisely.  Haven't used in the wild yet, but fit test was perfect.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    I am (pleasantly) surprised
  

*by J***. on Reviewed in the United States on February 29, 2016*

I ordered two packs for a total of eight of these locks.  I emailed seller to verify all locks would indeed be keyed alike.  I was surprised when my email was answered in a matter of minutes even though in my opinion the timing of the reply was outside normal business hours.  I was also surprised when after placing my order, my package arrived *before* the promised due date.  WOW!!All locks were keyed alike per the request and seller's promise.  Again, WOW!!As I complete my project, as I need more things this seller can provide, I will check with them first.  Thank you!!As for the product, it is a great item, tougher than nails or any other padlock I have used before.

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**Shop now:** [https://www.desertcart.tw/products/19128849-4-high-security-pro-series-keyed-alike-padlocks-w-8](https://www.desertcart.tw/products/19128849-4-high-security-pro-series-keyed-alike-padlocks-w-8)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-27*