Master Lock 379ATPY Trailer Coupler Lock Keyed Different

Common Questions

Can I order multiple padlocks that all open with the same key?
Yes. Padlocks that can be opened with the same key are called Keyed Alike (KA)

Can I order new padlocks keyed alike to match a padlock key code I already have?
Yes. We can supply Master Lock, American Lock, ABUS, PACLOCK, and Enforcer padlocks keyed to a specific key code. Some restrictions may apply.

What are keyed differently (KD) padlocks?
A group of Keyed Differently (KD) padlocks will have randomly selected key codes for each lock so that the key from one lock will not open other locks in the group. The number of key differs depends on the the number of pins in the cylinder. The only way to guarantee that there will be no duplicate keys in a group of padlocks is to request that the padlocks be registered (not available for all padlock models).

What are master keyed (MK) padlocks?
A master key (MK) is a unique key that will open all padlocks in a group of padlocks. A group of padlocks that open with a master key is called a master key system. Master keying is not the same as keyed alike. This is a common misconception. See keyed alike above. REQUEST A QUOTE for master keyed padlocks.

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Can padlocks be ordered with custom engraving?
Yes. Custom Engraving is available on most ABUS, Master Lock, American Lock and PACLOCK aluminum, brass, stainless steel and ProSeries® padlocks. Minimum order quantities may apply. REQUEST A QUOTE for custom engraved padlocks.

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Reviews

We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.

4.9

Out of 5.0

Overall Rating

98%

of customers that buy
from this merchant give
them a 4 or 5-Star rating.

Verified Buyer

October 29, 2025 by Jeralyn L. (United States)

“My shopping experience has been great. I was able to make a phone call spoke with a customer service and he guided me with no issues. Thank you.”

Verified Buyer

October 28, 2025 by Shane E. (United States)

“Pretty simple ordering process for multiple locks keyed-alike with my own code. I’ll definitely be back for more.”

Verified Buyer

October 27, 2025 by Shaun S. (United States)

“Communicates very well!”

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