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Master Lock Combination Lock, Set Your Own Combination Lock, Indoor and Outdoor Padlock, Weatherproof Code Lock,Black, 178D

4.6 4.6 out of 5 stars 14,670 ratings

$18.49
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Combination Lock, 1 Pack
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Purchase options and add-ons

Brand Master Lock
Special Feature Resettable Combination Lock
Lock Type Combination Lock
Item dimensions L x W x H 1 x 2 x 2.91 inches
Material Steel, Diecast

About this item

  • Indoor and outdoor padlock is best used as a school locker lock, gym lock, and gate lock, providing protection and security from theft.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
  • Set your own four-digit combination lock for easy combination recall; Combination change tool included
  • Combo lock is constructed with a solid body for strength and weatherability, hardened steel shackle for cut resistance
  • 2 inch (51 millimeter) wide lock body; 5/16 inch (8 millimeter) diameter shackle with 1 inch (25 millimeter) length, 1 inch (25 millimeter) width
  • Shackle is preset to open on 0-0-0-0. Some instructions may incorrectly state shackle opens on l-o-c-k. See user manual in technical specifications section of this page for correct combination reset instructions.
See more product details

Customer ratings by feature

Easy to use
4.5 4.5
Easy to lock
4.3 4.3
Lock Feature
4.2 4.2
Weatherproof
3.8 3.8

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From the manufacturer

combination lock, master lock, combo lock, padlock combination, master lock combination, gate lock

Master Lock 178D Set Your Own Combination Padlock

Cut Resistance

Weather Resistance

Combination Padlock

Heavy Duty

Hardened steel shackle for extra cut resistance.

Outdoor Use

Combination lock is best used as a gate lock, gym lock, or locker lock.

Easy To Set & Reset

The four-digit dial allows for thousands of possible numeric combinations.

Master Lock For Everything Worth Protecting

Product information

Technical Details

Additional Information

Warranty & Support

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Master Lock Combination Lock, Set Your Own Combination Lock, Indoor and Outdoor Padlock, Weatherproof Code Lock,Black, 178D

Master Lock Combination Lock, Set Your Own Combination Lock, Indoor and Outdoor Padlock, Weatherproof Code Lock,Black, 178D


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Product Description

The Master Lock 178D Set Your Own Combination Padlock features a 2in (51mm) wide solid body for strength and reliability. The 5/16in (8mm) diameter shackle is 1in (25mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 4-digit dialing allows for thousands of possible numeric combinations. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust.

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This Item
Master Lock Combination Lock, Set Your Own Combination Lock, Indoor and Outdoor Padlock, Weatherproof Code Lock,Black, 178D
Master Lock Combination Lock, Set Your Own Combination Lock, Indoor and Outdoor Padlock, Weatherproof Code Lock,Black, 178D
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Price$18.49$9.99$15.99$9.99$9.99$8.99
Delivery
Get it as soon as Monday, May 20
Get it as soon as Monday, May 20
Get it as soon as Monday, May 20
Get it as soon as Monday, May 20
Get it as soon as Monday, May 20
Get it as soon as Monday, May 20
Customer Ratings
Easy to use
4.5
4.5
4.1
3.9
3.9
4.0
Easy to lock
4.3
4.4
4.1
4.1
3.4
Lock Feature
4.2
4.6
4.7
3.4
3.3
Weatherproof
3.8
4.2
4.2
4.5
4.3
Sturdiness
4.3
3.5
4.0
4.0
Sold By
Amazon.com
WULALACK
Diyife-Direct
Delswin.LLC
DISECU
Amazon.com
lock type
Combination Lock
Combination Lock
Heavy Duty Outdoor Padlock
Combination Lock
Combination Lock
Combination Lock
number of items
1
1
1
1
1
material
Diecast, Steel
Steel
Stainless Steel, Alloy
Zinc
Metal
Alloy Steel, Metal, Vinyl
shape
Square
Rectangular
Square
Rectangular
Rectangular
Rectangular
finish type
Polished
Painted
Plated
Polished
weight
0.3 pounds
0.45 pounds
8.2 ounces

Customer reviews

4.6 out of 5 stars
4.6 out of 5
14,670 global ratings

Customers say

Customers like the quality, performance, and ease of use of the lock. They mention that it's well built, works well, and is easy to program. They are also satisfied with the value. However, some customers have reported issues with the readability and ease-of-opening. They say that the numbers are hard to turn and the edges look like they have a bit of rust.

AI-generated from the text of customer reviews

1,603 customers mention1,150 positive453 negative

Customers like the quality of the lock. They mention that it's well built, solid, and holds up well. Some say that the lock is secure enough to protect a locker and is easy to set combination. Overall, most are happy with their purchase and recommend the lock for indoor use.

"...High-quality, easy to set combination, and easy to lock and unlock. Happy with this purchase." Read more

"Master locks are the best, my other locks were old and even a couple had been hit with a hammer, also had to remember different combinations...." Read more

"Very easy to customize the combination for these locks. Very pleased with purchase." Read more

"...shed door duty and I just recently replaced it after the locking mechanism began acting up on a consistent basis — issue was occurring after..." Read more

657 customers mention579 positive78 negative

Customers find the lock easy to use. They mention that the combination is easy to set, program, and change. Some appreciate the set your own combination feature. Overall, most are happy with the ease of use of the lock.

"Typical for master locks. High-quality, easy to set combination, and easy to lock and unlock. Happy with this purchase." Read more

"...Easy to set your own combination!" Read more

"Setting my own combination was easy and a great option, I don't need another key for a lock that is rarely opened." Read more

"These are descent good locks that lock securely. Has combination dial things on the base. Dials like briefcase locks...." Read more

639 customers mention484 positive155 negative

Customers like the performance of the lock. For example, they say it's easy to program, works well, and is secure. Some mention that the lock is weatherproof and works reliably indoors. That said, most are happy with the performance and quality of the product.

"Typical for master locks. High-quality, easy to set combination, and easy to lock and unlock. Happy with this purchase." Read more

"...They work great and I like not having to keep track of keys...." Read more

"...The lock works fine a year later. I didn't hesitate to buy the exact same ones again for another trailer. Easy to set your own combination!" Read more

"...Yesterday I dropped it on a hard floor, and now the detents on the code wheels no longer work...." Read more

127 customers mention127 positive0 negative

Customers are satisfied with the value of the lock. They mention that it's a great lock for the price, and worth buying. Some appreciate the hefty and intimidating-looking locks.

"...Definitely recommend, it’s a solid lock at a good price point." Read more

"...So overall, a really nice product for its price. Manufacturing quality can be a bit nicer but for its price point, no an issue...." Read more

"...But this is part of the reason that this lock set is cheaper. Just don't lose the key...." Read more

"...No. But that is exactly what I expect from a simple, cheap, straight forward lock...." Read more

143 customers mention36 positive107 negative

Customers find the lock's combination numbers difficult to read and turn. They also say the metal tarnishes, making it hard to read the combination numbers. Some say the numbers slides are getting harder to manipulate. Overall, some customers recommend the lock for its sturdy construction.

"...These locks feel more "substantial" but they are also more difficult to use. The dial for the combination code is relatively difficult to turn...." Read more

"...After several months of use the numbers were tight to turn and then at just about a year of use it completely stopped working where the lock will..." Read more

"...Has combination dial things on the base. Dials like briefcase locks. Easy to set/change the combination using the tool (included)...." Read more

"...barely fits in the locker door mechanism at my gym and is very difficult to get in and out." Read more

128 customers mention0 positive128 negative

Customers have negative opinions about the ease of opening the lock. For example, they mention that it's difficult to open and close, and it'll still pop open. Some say that it won't latch itself closed and that it takes too long to open.

"Takes a minute to get open because of how small the numbers are but good lock" Read more

"...just about a year of use it completely stopped working where the lock will pop open no matter if the combination is correct or not...." Read more

"...One of the six was a little fussy at the beginning, did not want to open easily, but after messing with it for 5 minutes, it worked perfectly well...." Read more

"...No matter what we tried, it didn't open. We had to cut it off. Which wasn't too hard with bolt cutters. So keep that in mind...." Read more

Great gym locker lock.
5 Stars
Great gym locker lock.
I needed a lock to secure a locker in my local YMCA. This very simple lock does exactly that. Do I expect it to hold up to bolt cutters or serious manipulation? No. But that is exactly what I expect from a simple, cheap, straight forward lock. It is enough to secure my belongings in a locker room--that is all I was looking for.The lock comes with a key object that allows you to set the combo for the lock. I like how simple it all is. Also when it comes to opening the lock it is a lot more straight forward to open than the turning locks. It is easy-to-use for day-to-day gym activities.Dimensions can be seen in the photos I have uploaded.Pros:*Secure enough to protect a locker in a locker room*Easy to use*Quick to useCons:*NoneAdditional Considerations:If you are looking to secure something more valuable that is not in a high traffic area like a locker room--thus being exposed to more manipulation or bolt cutters--this is not the lock you want. This lock is very simple and used purely to secure stuff in a locker room setting where you will not have someone coming in with bolt cutters getting into your stuff. If you need something more secure, look elsewhere.Overall: 5/5 stars (&#62;=.5 rounds up, &#60;.5 rounds down) =&#62; 5 starsIf you have any further questions regarding the product in my review please leave a comment below and I will get back to you as soon as possible.
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Top reviews from the United States

Reviewed in the United States on April 16, 2024
Style: Combination Lock, 2 PackVerified Purchase
Typical for master locks. High-quality, easy to set combination, and easy to lock and unlock. Happy with this purchase.
Reviewed in the United States on April 26, 2024
Style: Combination Lock, 4 PackVerified Purchase
Master locks are the best, my other locks were old and even a couple had been hit with a hammer, also had to remember different combinations. Now I just have to remember one combination and don't have to spin right, left, right.
Reviewed in the United States on July 15, 2021
Style: Combination Lock, 1 PackVerified Purchase
Have a few of these outdoors (in Phoenix heat) on various things and most importantly my tool shed. They work great and I like not having to keep track of keys. My oldest of the locks saw roughly 5 years of shed door duty and I just recently replaced it after the locking mechanism began acting up on a consistent basis — issue was occurring after scrambling the combo it should lock closed with a simple press but it was no longer catching the mechanism without holding the shackle into lock body and then would have to proceed to scramble the combo at the same time for it to catch, still worked but got tired of it and finally just replaced. Haven't noticed signs of rust on any of them at any point. Maybe once a year I spurt some silicone lubricating spray into the mechanism to keep the action smooth. Definitely recommend, it’s a solid lock at a good price point.
2 people found this helpful
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Reviewed in the United States on March 23, 2024
Style: Combination Lock, 2 PackVerified Purchase
Very easy to customize the combination for these locks. Very pleased with purchase.
Reviewed in the United States on February 8, 2024
Style: Combination Lock, 1 PackVerified Purchase
Update: I called Master Lock. They took responsibility and promptly replaced the lock at no expense to me. Upgrading from 1 to 4 stars on faith that this replacement will perform up to Master Lock's usual high standards. Will return to update this review if that proves not to be the case.

---

Old review:
This lock didn't make it through a single Ohio winter.

I needed to get into the shed in January and couldn't get the lock open. Eventually a lot of pushing and pulling worked. Then it wouldn't lock again, even after I brought it inside for a week to warm up.

Unreliable. Avoid.
Reviewed in the United States on March 5, 2024
Style: Combination Lock, 4 PackVerified Purchase
I purchased one of these in the past and keep it on a trailer that is stored outdoors. The lock works fine a year later. I didn't hesitate to buy the exact same ones again for another trailer. Easy to set your own combination!
Reviewed in the United States on February 29, 2024
Style: Combination Lock, 1 PackVerified Purchase
Perfect lock, perfect size, set your own lock code, no key to have to hang onto.
Reviewed in the United States on March 1, 2024
Style: Combination Lock, 1 PackVerified Purchase
Setting my own combination was easy and a great option, I don't need another key for a lock that is rarely opened.

Top reviews from other countries

Translate all reviews to English
AntMan
5.0 out of 5 stars Good solid lock
Reviewed in Canada on April 9, 2024
Style: Combination Lock, 2 PackVerified Purchase
After 25 years using a traditional school locker master lock, I decided to upgrade to this outdoor version as a replacement. I like programmable code which makes it much easier to remember, and the lock itself is built more solid that the older one that it replaces. I actually can't believe my original master lock lasted as long as it did, considering it wasn't designed for the snow and ice that it was living with. I expect this will be the last lock I need for the shed it protects.
Eduardo G.
5.0 out of 5 stars Excelente, de calidad y seguro.
Reviewed in Mexico on March 19, 2024
Style: Combination Lock, 1 PackVerified Purchase
Necesitaba un candado confiable para el locker del gimnasio ya que los que uno compra en cualquier ferretería o supermercado a veces son fáciles de romper o abrir, en este caso ya había usado candados de la marca Master por lo que sé que son de calidad, este me gustó porque es de combinación así que no tengo que preocuparme por si pierdo la llave, además de que le puedes personalizar la combinación que tú quieras con una especie de llave que viene incluida, eso sí, es algo pesado y de grosor, pueden ver el tamaño con relación a una moneda de 5 pesos, pero por lo mismo se nota la calidad del metal, definitivamente satisfecho con la compra, y como tiene superficie plana al frente y por detrás le puedes poner algún sticker como lo hice yo para ubicarlo más fácilmente entre los casilleros del gimnasio. Lo compraría de nuevo y además me salió en oferta.
Customer image
Eduardo G.
5.0 out of 5 stars Excelente, de calidad y seguro.
Reviewed in Mexico on March 19, 2024
Necesitaba un candado confiable para el locker del gimnasio ya que los que uno compra en cualquier ferretería o supermercado a veces son fáciles de romper o abrir, en este caso ya había usado candados de la marca Master por lo que sé que son de calidad, este me gustó porque es de combinación así que no tengo que preocuparme por si pierdo la llave, además de que le puedes personalizar la combinación que tú quieras con una especie de llave que viene incluida, eso sí, es algo pesado y de grosor, pueden ver el tamaño con relación a una moneda de 5 pesos, pero por lo mismo se nota la calidad del metal, definitivamente satisfecho con la compra, y como tiene superficie plana al frente y por detrás le puedes poner algún sticker como lo hice yo para ubicarlo más fácilmente entre los casilleros del gimnasio. Lo compraría de nuevo y además me salió en oferta.
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Arvind Bamhi
5.0 out of 5 stars Excellent Quality Lock
Reviewed in India on February 26, 2024
Style: Combination Lock, 1 PackVerified Purchase
The Lock is of Very Good Quality...Heavy and Strong....This is the first time I ever purchased such a good lock...
One person found this helpful
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Truthful Reviewer
5.0 out of 5 stars Best Anti-Theft Gym Locker
Reviewed in Canada on February 21, 2019
Style: Combination Lock, 1 PackVerified Purchase
I frequent the gym 5 days a week and in doing so, you become more exposed to potential theft. Unfortunately, our gym discovered that someone was using bolt cutters to cut locks and steal belongings from customers whilst they worked out. All the lockers that were targeted had a cheap lock made out of inferior material and thin shackle, so I decided to purchase a superior lock just in-case I would become the next target.

I have been using the Master Lock 178D for 3 days so far and I am very impressed with the quality of the lock. The material/durability is exception for the price you pay and programming the lock is a breeze - it took me 2 minutes. In addition, the shackle is thick enough to discourage a thief, as it would take a significant amount of effort to cut this lock. Overall, I am very satisfied with the security and experiencing using this lock and would highly recommend it.

You can't go wrong for $20 and prime 2 day shipping!
Jabba
1.0 out of 5 stars Poor product
Reviewed in the United Kingdom on September 16, 2018
Style: Combination Lock, 1 PackVerified Purchase
Poor product, stopped working inside 3 months, not of saleable quality