Service & Support


Q: I have Master Lock door hardware that was purchased prior to 2004 that requires warranty services. What should I do?


The phone number for warranty claims on door hardware produced prior to 2004 is 1-800-308-9244.

Q: What is your Limited Warranty?


Please refer to Master Lock International Warranty document.

Would you have any further question regarding our guarantee, please do not hesitate to contact us.

Q: Is my product covered under any Master Lock warranty? How do I find that information?


 Please follow these instructions to find your product warranty:

    1. Go to the keyword and product search in the upper right on
    2. Enter your product number
    3. Go to the product detail page
    4. View the Product Warranty document in the Service & Support area

If you don’t know your product number, just search on your product type (such as "Door Hardware") and use the results to find your product.
If there is no "Product Warranty", then there is no warranty that applies to your product.

Q: We have combination locker locks and we have lost the chart booklet that lists all of the serial numbers and their respective combinations. How can we obtain a new chart booklet?


Master Lock combination locker locks have a limited lifetime warranty. If a product fails due to a defect in material or workmanship at any time during the life of the product, we will replace it free of charge. This warranty gives you specific legal rights, and you may also have other rights, which may vary, from state to state, province to province, country to country.

Master Lock is not liable for incidental or consequential damages. This warranty does not cover products which have been abused, altered, damaged, misused, cut or worn. Products over 10 years old will be evaluated and inspected for abuse, alteration, damage, misuse, and wear prior to warranty coverage.

To the extent permitted by law, MASTER LOCK COMPANY disclaims all other implied or express warranties including warranties of merchantability and/or fitness for a particular use.

Some governments do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

Please send a request to Master Lock for further information or to initiate a warranty replacement. You will need to provide the lock model number, serial number, lock combination (if applicable), lock key number (if applicable), how the lock is being used and a description of failure. We may request samples for analysis if deemed necessary.

Q: How can I fix a Master Lock padlock that only opens occasionally or is difficult to open?


Watch our lock maintenance video or view our Care & Service guide. If your lock still does not function properly, it may be defective. Refer to our Warranty Information to find out how to obtain a replacement lock.

Q: I bought some Master Lock door hardware a few years ago, and it's not functioning properly. How do I get it replaced?


In December 1997, Master Lock sold off an older division which made door hardware products. However, we are still honoring the warranty. Please call 1-800-308-9244 for information regarding warranty.

Note: We do not have any replacement parts available for door hardware products purchased prior to 1997.

If you purchased Master Lock door hardware products after March 2, 2006, you can find more information regarding these products at Master Lock door hardware products are also sold at select stores nationwide.

Q: How long does it take to receive a replacement lock once my warranty claim has been accepted?


The time will vary depending on the type of lock, and whether your replacement needs to be custom-built. Generally, you should receive your replacement within 2-4 weeks.

Q: My lock was difficult to open, and it had to be cut off. Will Master Lock replace my lock?


All Master Lock padlocks are warranted to be free from mechanical defects for the life of the product. If a mechanical defect occurs, we will replace it free of charge. See Master Lock product warranty.

Q: What is the product warranty?

Customer Experiences

"I have 7 Master Locks all 175DLH on the gates to our property. 2 failed and your company is extending the lifetime warranty to me. THANK YOU!!!"
— Edward @ Gilroy, CA   Full Story