---
product_id: 37536189
title: "Master Lock 410BLU Lockout Tagout Safety Padlock with Key"
brand: "master lock"
price: "$36.21"
currency: USD
in_stock: true
reviews_count: 13
category: "Master Lock"
url: https://www.desertcart.us/products/37536189-master-lock-410blu-lockout-tagout-safety-padlock-with-key
store_origin: US
region: United States of America
---

# Key retaining feature 6-pin tumbler security Works -70°F to 350°F Master Lock 410BLU Lockout Tagout Safety Padlock with Key

**Brand:** master lock
**Price:** $36.21
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in safety, unlock your peace of mind.

## Quick Answers

- **What is this?** Master Lock 410BLU Lockout Tagout Safety Padlock with Key by master lock
- **How much does it cost?** $36.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/37536189-master-lock-410blu-lockout-tagout-safety-padlock-with-key)

## 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

- • **Lifetime Guarantee:** Trusted Master Lock quality backed by a lifetime warranty for peace of mind on every job.
- • **Key Retaining Security:** Never leave your lock unsecured—key stays trapped until padlock is properly locked.
- • **OSHA-Ready Safety Lock:** Specifically engineered for lockout tagout compliance to keep your workplace incident-free.
- • **Precision 6-Pin Tumbler:** Advanced 6-pin core with spool and serrated pins for enhanced security and professional-grade lock control.
- • **Thermoplastic Durability:** Lightweight, non-conductive body that withstands extreme temps from -70°F to 350°F—built for any environment.

## Overview

The Master Lock 410BLU is a blue, thermoplastic safety padlock designed for OSHA-compliant lockout tagout applications. Featuring a durable, lightweight, and non-conductive body that operates reliably in extreme temperatures (-70°F to 350°F), it includes a high-security 6-pin tumbler cylinder with a key retaining feature to prevent accidental unlocking. With a 1-1/2 inch wide body and 1/4 inch diameter shackle, this lock offers professional-grade safety backed by a lifetime guarantee.

## Description

Master Lock 410BLU Lockout Tagout Safety Padlock with Key features a 1-1/2 in. (38 mm) wide plastic blue body and a 1-1/2 in. (38 mm) tall, 1/4 in. (6 mm) diameter metal shackle. Designed exclusively for Lockout Tagout applications as part of a comprehensive OSHA compliant safety program. The durable, lightweight, non-conductive lock body is easy to carry and padlock features high security, reserved-for-safety cylinder with key retaining, to ensure padlock is not left unlocked. The Lifetime Guarantee provides peace of mind from a brand you know and can trust.

Review: Sturdy - Well made.
Review: Excellent for Locksport / Picking - But Read The WARNING! - For those of us in the Locksport Community, we all know Master Lock is the butt of a great number of jokes because their products are truly horrible. However, this padlock is a rare exception. This lock is NOT designed to withstand physical attacks; the body is made of plastic. However, with a 6-pin core containing all security pin drivers, it's great practice for those looking to sharpen or maintain their skills with spool and serrated pins. My attached pictures give you a look inside the lock. The lock housing is not designed to be opened; the plastic body is sealed. I broke mine open along the seam line and then super-glued it back together. The plug has a standard Master Lock keyway but because the entire core is relatively small, maneuvering your pick can be a little tricky due to limited space. Also, this is a dead core meaning there is no spring tension on the plug. Precision tension therefore becomes very important which is more great practice. My lock (and I assume yours will too) contained 5 spool drivers, 1 serrated driver (having two spaced out serrations), and 6 standard key pins. For prices in the single digits, you just can't beat this lock. Now, if someone could only talk Master Lock into pinning ALL their locks this way... [***WARNING*** ] The opening in the plastic body through which the key is inserted is warded so that when turning the key to unlock it, the key (and therefore the plug) will only rotate 90 degrees before stopping. After successfully picking this lock, DO NOT rotate the plug anywhere near 180 degrees. Stop at 90 like the key does. The reason for this is because if you rotate the core 180 degrees, all of the key pins in the plug will fall out inside the body of the lock. You will then be forced to either throw it away or crack it open and re-pin it. You can see in one of my pictures what the lock will look like once you crack it open if you pick it and rotate the plug too far. All of the key pins are laying loose in a recess.

## Features

- Lockout tagout lock is best used for electrical lockout applications as part of a comprehensive OSHA compliant safety program
- Zenex thermoplastic safety lock body is durable, lightweight, and non-conductive; functions in temperatures from -70 to 350 degrees Fahrenheit
- Features a cylinder that is reserved for safety padlocks; key retaining feature ensures padlock is not left unlocked
- 1-1/2 in. (38 mm) Wide lock body with 1/4 in. (6 mm) diameter shackle, 1-1/2 in. (38 mm) shackle length and 25/32 in. (20 mm) width
- Includes one blue lockout tagout padlock, one key

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004J173D8 |
| Best Sellers Rank | #20,744 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #46 in Keyed Padlocks |
| Brand | Master Lock |
| Color | Blue |
| Control Method | App |
| Controller Type | Hand Control |
| Date First Available | December 3, 2010 |
| Department | Safety |
| Finish Type | Vinyl Coating;Painted |
| Global Trade Identification Number | 00071649078941 |
| Included Components | 1 Master Lock Manufactured Product |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.84 ounces |
| Item dimensions L x W x H | 4.1 x 3.9 x 3.6 inches |
| Item model number | 410BLU |
| Lock Type | Key |
| Manufacturer | Master Lock |
| Material | Metal |
| Model Name | 410BLU |
| Number of Pieces | 1 |
| Product Dimensions | 4.1 x 3.9 x 3.6 inches |
| Recommended Uses For Product | outdoor |
| Shape | Rectangular |
| Special Feature | Keyed different, 6-pin tumbler with over 40000 available key changes |
| Style | Safety Padlock |
| UPC | 071649078941 |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 4.1 x 3.9 x 3.6 inches
- **Lock Type:** Key
- **Material:** Metal
- **Special Feature:** Keyed different, 6-pin tumbler with over 40000 available key changes

## Images

![Master Lock 410BLU Lockout Tagout Safety Padlock with Key - Image 1](https://m.media-amazon.com/images/I/61MKFVyqnWL.jpg)
![Master Lock 410BLU Lockout Tagout Safety Padlock with Key - Image 2](https://m.media-amazon.com/images/I/61P8XkP3iSL.jpg)
![Master Lock 410BLU Lockout Tagout Safety Padlock with Key - Image 3](https://m.media-amazon.com/images/I/519bns+6OzL.jpg)
![Master Lock 410BLU Lockout Tagout Safety Padlock with Key - Image 4](https://m.media-amazon.com/images/I/71ZhaED6KUL.jpg)
![Master Lock 410BLU Lockout Tagout Safety Padlock with Key - Image 5](https://m.media-amazon.com/images/I/716yNGMiWCL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy
*by E***S on December 20, 2025*

Well made.

### ⭐⭐⭐⭐⭐ Excellent for Locksport / Picking - But Read The WARNING!
*by M***R on September 24, 2018*

For those of us in the Locksport Community, we all know Master Lock is the butt of a great number of jokes because their products are truly horrible. However, this padlock is a rare exception. This lock is NOT designed to withstand physical attacks; the body is made of plastic. However, with a 6-pin core containing all security pin drivers, it's great practice for those looking to sharpen or maintain their skills with spool and serrated pins. My attached pictures give you a look inside the lock. The lock housing is not designed to be opened; the plastic body is sealed. I broke mine open along the seam line and then super-glued it back together. The plug has a standard Master Lock keyway but because the entire core is relatively small, maneuvering your pick can be a little tricky due to limited space. Also, this is a dead core meaning there is no spring tension on the plug. Precision tension therefore becomes very important which is more great practice. My lock (and I assume yours will too) contained 5 spool drivers, 1 serrated driver (having two spaced out serrations), and 6 standard key pins. For prices in the single digits, you just can't beat this lock. Now, if someone could only talk Master Lock into pinning ALL their locks this way... [***WARNING*** ] The opening in the plastic body through which the key is inserted is warded so that when turning the key to unlock it, the key (and therefore the plug) will only rotate 90 degrees before stopping. After successfully picking this lock, DO NOT rotate the plug anywhere near 180 degrees. Stop at 90 like the key does. The reason for this is because if you rotate the core 180 degrees, all of the key pins in the plug will fall out inside the body of the lock. You will then be forced to either throw it away or crack it open and re-pin it. You can see in one of my pictures what the lock will look like once you crack it open if you pick it and rotate the plug too far. All of the key pins are laying loose in a recess.

### ⭐⭐⭐⭐⭐ Good lock
*by A***Z on November 29, 2025*

There isnt much to these. Easy to see and mechanism is easy to turn. Dropped it on concrete a few times and its fine.

## Frequently Bought Together

- Master Lock 410BLU Lockout Tagout Safety Padlock with Key,Blue
- Master Lock Safety Series 1' Jaw Steel Lockout Hasp

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*