Search  for anything...
Master Lock

Master Lock Combination Padlock Weather Resistant Lock Black 4-Pack 178EC4

Based on 14,608 reviews
Condition: New
Product info up-to-date
$59.10

Buy Now, Pay Later

As low as $9.85 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Nov 14
Order within 7 hours and 15 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

Recently Viewed

At a glance

Condition
New
Number of Items
4
Model
178EC4
Dimensions
0.96 x 2 x 2.91 in
Weight
1.38 kg
Color
Black
Material
Alloy Steel
In the box
Combination Padlock 4 pk

Features 6

  • Indoor and outdoor padlock is best used as a school locker lock, gym lock, and gate lock, providing protection and security from theft
  • 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

Description

The Master Lock 178EC4 Set Your Own Combination Padlocks feature 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. Includes four set your own combination locks. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust.

Specs 28

Brand Master Lock
Special Feature Padlock
Lock Type Combination Lock
Item dimensions L x W x H 0.96 x 2 x 2.91 inches
Material Alloy Steel
Brand Name Master Lock
Recommended Uses For Product Security
Number of Pieces 4

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 14

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

It's a good lock for the gym!
Number of Items: 1
I bought this to use at Planet Fitness, works without issue. It was easy to set up my new code. Feels durable!
Reviewed in the United States on September 25, 2026 by Michael
Decent combination lock.
Number of Items: 1
Seems like a good quality padlock. I like the fact that you can set your own combination. No more remembering some abscure random numbers. Time will tell on the durability.
Reviewed in the United States on May 22, 2026 by Stephen R. Hardison
I bought two to replace old versions of the same product
Number of Items: 1
We lock our front and back gates with these locks. They are in the elements, unprotected from sun/rain. The last ones (same model) were in service since 1994(!), and were good reliable easy to use locks. They were 'used' (unlocked/locked) several times a week. I decided to replace them because the numbers on the combination wheels were becomming a bit corroded and difficult to read, they were getting more difficult to turn (not that bad though), and the lock mecahnism wasn't working as well as it used to. Sometimes the lock didn't latch when locking, and you had to bang it on the gate to get it to latch. I tried lubricating the locks with triflow, which helped for a couple weeks, but then became stingy again. I thought that after 19 years, I could afford to buy a couple more. So I've been using the two replacements for a month now, and they're great. The numbers are easier to read, the wheels are easy to turn, and the lock mechanism works perfectly. I assume these will last ~20 years like the last set. By the way, it's a bit counter-intuitive, but to open the lock, set the dials to the combination, then push the shackle *IN* to disengage the lock. Some people set the number, then pull, but that's not it works. ... show more
Reviewed in the United States on January 15, 2013 by Gadget Fanatic
It locks
Number of Items: 1
Easy to set your own lock combination. Seems like the construction is good
Reviewed in the United States on September 29, 2026 by Danny
Almost 7 years later still going strong
Number of Items: 1
Review Image by Rico
I beams out in my yard and noticed the two padlocks on my gates. I open them about 4 or 5 times a year and don’t oil the padlock or do any maintenance. They’re just left out in the weather year round and they always work. When I saw them today I realized it had been a long time since I bought them and thought how nice it is that a product actually lasts and I don’t have to think about it ever, much less replace it. So I looked it up and I bought both in August 2018 and here it is almost 7 years later and they still work great and don’t show any signs of wear besides some minor fading. That is what I call a fine product and there aren’t too many out there nowadays since everything became disposable, so I wanted to write this long overdue review since it’s so remarkable to me. Now I will say, they cost $9.49 back in 2018 so the price has doubled, which isn’t great, but that’s the way of things too nowadays so there’s no sense complaining I’m just really happy there are a few solid products still being made out there, and this lock is definitely one of them. ... show more
Reviewed in the United States on February 10, 2025 by Rico
Good quality
Number of Items: 4
Love them, I used them for my Milwaukee boxes and the color looks pretty cool
Reviewed in the United States on July 24, 2026 by Ivan Castillo Flores
Simple To Use, Surviving Phoenix Heat
Number of Items: 1
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. ... show more
Reviewed in the United States on July 15, 2021 by festivusfortherestofus
Works well for pre-teens
Number of Items: 1
I bought this because my 12 year old was struggling with the one bought locally- this one was recommended online and it has worked very well
Reviewed in the United States on May 28, 2026 by sharon forquer bonnett
How it works