Padlocks FAQs

You can securely store your combination or key number with us so that you never lose it. If you lose your key, the number can be used at a locksmith or a hardware store for a new one.

If you still have a physical key, you should be able to get it duplicated from a local hardware store or locksmith. If you don’t have a key to reference, then another option is knowing your key number to place a special order via a authorized distributor.

If both are not an option, then contacting a locksmith to open or remove your lock would be your resolution.

The instruction sheet is located inside the packaging.

The security scale of our padlocks is based on several tests carried out in our Master Lock laboratory. The levels can help our consumers choose from the wide range of padlocks we offer. Depending on the value of the assets that need to be secured and the exposure to possible attacks, our consumers can choose between a high, medium or low security level product. Each security manufacturer have there own security scales which may not be like for like.

If you recorded the key number, you may be able to get replacement keys from a hardware store or locksmith. If you didn't record the number, contact a locksmith to remove your lock.

Please note there will likely be a fee for this service.

Unfortunately no. You cannot reset this lock without knowing the current combination. You'll likely need to purchase a new lock.

You can store your combination and/or key numbers at masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Lubricate your locks with Master Lock recommended lock lubricant 2300D. Master Lock’s lock lubricant 2300D is specially formulated to not only prevent your locks from corroding, but the formula also prevents moisture from condensing inside the lock, which greatly reduces the likelihood your lock will freeze due to cold weather. View proper care and service of Master Lock Products.

To set your own combination: (REMEMBER: Combination can only be set when lock is open.)

1. INSERT ‘reset’ tool (A) (enclosed in package) in hole on side of lock.
2. PUSH key in and TURN key 90° in either direction (key automatically stays in this position). Failure to exert force while pushing key in will result in a failed attempt to set or reset combination.
3. SET wheels (B) to desired combination.
4. TURN and remove reset tool. Lock is now set to new combination. BE SURE TO RECORD YOUR SECRET COMBINATION.

To Lock: SCRAMBLE the wheels and CLOSE the shackle.
To Reopen: DIAL your secret number and DEPRESS shackle.

Instructions are available on our website www.masterlock.eu on the product page.

No. Without the key number, there is no way for Master Lock to know which key will open your lock. There is not a master key that will open all Master Lock products.

Unfortunately, you cannot reset this lock without knowing the current combination. You'll likely need to purchase a new lock.

A) My lock does not have a serial number:

To provide enhanced long–term security, Master Lock has discontinued imprinting a serial number on the lock body on combination locks sold through retail locations. For greater convenience, we encourage consumers to store their combination at our secure website, Masterlockvault.com, which is easy to use and offers 24/7 access. Unfortunately, we are unable to provide combinations for non–serialized locks. Please see examples of a serial number if you are unsure if your lock features one.

B) My lock has a serial number:

Please send your request to aftersalesmle@master-lock.fr and provide model and serial numbers.

Store your combination at Masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

For wheels that are hard to turn, we recommend using a WD40 solution for cleaning or washing the moisture out of a padlock but a good lubricant needs to be applied afterwards.

To set your own combination:

1. Open and withdraw shackle. Note: For first time use, position wheels so that the numbers 0-0-0-0 aligns with the Master logo.
2. Pull spring-loaded metal end cap off.
3. Remove all four combination wheels.
4. IMPORTANT: Make sure the red clutchplate marks remain aligned with pointer.
5. Install wheels so desired combination aligns with pointer.
6. Snap metal end cap back into place (NOTE: If end cap will not mount properly, check wheels to make sure they are right side up).
7. To lock: Dial your new combination; close shackle, scramble wheels “to lock”. Be sure to record your secret combination.

Please complete our contact us form and include your name, address, phone number, the model number of the lock you are interested in, the key number if you have an existing system, and the quantity. Your note will be forwarded to the Master Lock Sales Representative in your area.

Most lock models have an option to match an existing key when ordering new locks. With a wide variety of locks Master Lock offers, we recommend contacting a distributor or our call center for confirmation.

No. Master Lock does not reimburse for locksmith charges.

The 1500iEURD lock is sensitive and reads all movements; certain types of touch seem to work better for some users to help ensure the correct combination is entered.
Please try these suggestions:

1. Give the shackle two quick squeezes to "clear" it rather than two slow, deliberate squeezes.
2. In a quick manner, allow the button to move back to center mostly on its own, without over-guiding it.
3. Don’t allow the button to bounce past the center position or it will read the adjacent position as part of the entry.

To set your own combination:

1. With dials at 0-0-0-0, pull out the shackle.
2. Turn shackle 90° (1/4 turn) and press it down.
3. Continue pressing shackle and set the dials to your own combination.
4. Lift and turn shackle to the initial position.
5. To lock, turn dials to scramble combination.

We do not supply replacement keys directly to customers. Instead, you may try another hardware store in your area or contacting a locksmith to see if they can produce a replacement key.

It may be possible that the lock is set to "no" combination. Please try resetting the lock again by following the instructions below:

1. Place lock in the open position.
2. On the back of the lock, slide the reset lever into the “up” position.
3. Insert the shackle into the lock and squeeze firmly twice to “clear” it.
4. Pull up on the shackle to open the lock.
5. Enter your new combination.
6. On the back of the lock, slide the reset lever into the “down” position.
7. Insert the shackle into the lock and squeeze firmly.
8. The lock will now open with the new combination.

To set your own combination:

1. With dials at 0-0-0-0, pull out shackle.
2. Turn shackle counterclockwise 90° and press it down.
3. Continue pressing shackle and turn another 90°.
4. Set the dials to your own combination.
5. Turn shackle clockwise back to the original 90° position.
6. Lift and return shackle to closed position.

Check with a local locksmith to see if they can duplicate a replacement key. Sometimes, replacement keys are not available for every model of lock. If this is the case, you may need to purchase a new lock.

To open a standard Master Lock combination lock (1500D):

1. Turn the dial 3 times to the right and stop on the first number of the sequence.
2. Turn the dial to the left, past the first number of the sequence, and stop on the second number.
3. Turn the dial to the right and stop on the third number of the sequence.
4. Pull up on the shackle.

Watch the instructional video.

Print or view the installation instructions for our built-in locker locks.

View the instructions on how to change the combinations on your built-in locker locks.

As a courtesy, Master Lock customer solutions group can issue you a replacement tool free of charge. You will need to supply the model number or an image of your lock. Please contact us to submit your request.

We will not provide lost combinations if the lock is attached to anything.

Generally, you should receive the replacement product in 2-4 weeks. This time may vary depending on the product.

99% of the time the lock is working perfectly, but consumers have forgotten their combination. If you believe your lock is defective please visit our Contact Us Page and fill out the contact form. A customer service representative will contact you within 48 hours.

The 1590EURD dial is sometimes more difficult to turn upon first use and loosens up after several full rotations. If it continues to prove difficult to turn after several rotations, please contact us.

These locks are registered to a particular business or school and the keys are reserved for their use only. Yes, it is possible to purchase up to 12 additional keys if you are the registered end user (i.e. a school or institution). Send a request to aftersalesmle@master-lock.fr and be sure to include the exact key numbers and any information that will help us find your user registration.

You can review the use of your padlock that Master Lock recommends through the product page. Unfortunately, Master Lock will not replace the product due to an incorrect use.

To set your own combination:

1. With dials at 0-0-0, pull out shackle.
2. Turn shackle counterclockwise 90° and press it down.
3. Continue pressing shackle and turn another 90°.
4. Set the dials to your own combination.
5. Turn shackle clockwise back to the original 90° position.
6. Lift and return shackle to closed position.

Resettable combination locks have a combination that is assigned by the owner of the lock. Therefore, Master Lock does not have record of the combination that the owner set. The lock cannot be reset unless it is in the open position. If your lock is attached to something, you will need to call a locksmith for removal. Please note that Master Lock does not reimburse for Locksmith services and/or fees.

To locate the lock's Activation Code on the instruction sheet included in the lock packaging:

1. Remove the instruction sheet from the box packaging.
2. The Activation Code is located on the upper left side of the instructions.

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.

These locks are registered to a particular business or school and the keys are reserved for their use only.

Yes, it is possible to purchase up to 12 additional keys if you are the registered end user. Call our sales assistant at +33 1 77 69 02 42. Be sure to provide the exact key numbers and any information that will help us find your user registration. 

The preset combination will be a series of four arrows which will look like the example code below (the preset combination is different for each lock):
←
↑
→
↓
The preset combination is in the plastic drawer at the back of the packaging.
 

Lubricate your locks with Master Lock recommended lock lubricant 2300D. Master Lock’s lock lubricant 2300D is specially formulated to not only prevent your locks from corroding, but the formula also prevents moisture from condensing inside the lock, which greatly reduces the likelihood your lock will freeze due to cold weather. View proper care and service of Master Lock Products.

To set your own combination:

1. OPEN lock and TURN shackle 90° to position I.
2. PUSH shackle in to lock until it “clicks.”
3. TURN shackle another 90° to position II.
4. SET dials at black indicator line to desired combination.
5. PULL shackle UP. VERIFY dials remained set to your combination before locking.

Lock is now set to new combination.
TO LOCK: Close the shackle and SCRAMBLE THE DIALS.
TO REOPEN: DIAL your combination and PULL shackle.

For security purposes, the only way to open the lock is to use the combination. Resettable combination locks have a combination that is assigned by the owner of the lock. Therefore, Master Lock does not have record of the combination that the owner set.

To obtain a new combination chart booklet, send a request to safetyeucs@mlock.com.

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.

To set your own combination:

1. The combination is pre-set at the factory to 0-0-0.
2. While holding down the Cable Trigger Button, push down the Cable Head until you hear a "click".
3. Rotate dials to your desired combination.
4. Pull out Cable Head while holding down the Cable Trigger Button. Your personal combination is now set.

    Note: Cable should be fully retracted for Step 1.

To set your own combination:

1. Locate ‘reset’ tool on back of package. Insert tool in side of lock. Lock must be OPEN to reset.
2. Push tool in and turn 90° clockwise. Must PUSH IN AND TURN to reset combination.
3. Set to desired combination. Turn tool counter-clockwise and remove.
4. Be sure to record your new combination at www.masterlockvault.com.
5. Close lock and scramble dials to close.

We appreciate your feedback and apologize for your inconvenient experience with this product. Indeed, your padlock is a TSA-accepted model so it is likely that the TSA screener may not have been adequately trained to recognize the red and white diamond logo on the lock.
We can submit a notice to the TSA and we would like the following information to complete the claims process.
These infomation will be sent to our licensor, Travel Sentry, and they will address the incident with the screener authority at the airport where the lock was cut.
• Date of travel:
• Name of departure airport:
• Airline, flight #, time of flight:
• Did the TSA place a "Notification of Baggage inspection" inside the bag (Y/N):
We would also like to replace the lock for you, so please confirm the model by number or photo.

To set or reset the combination on your Master Lock 1550 backpack lock:

1. Align the dials to the previous combination. The factory-set combination is 0-0-0. 
2. Push in the button at the bottom of the lock. While holding in the button, turn the dials to your new combination. 
3. Once the dials are set to your new combination, release the button. The lock now has a new combination. 
4. Record your combination in a safe place.

For further guidance on how to set or reset the combination on your lock, please see the instruction sheet.

To set your own combination:

1. With dials at 0-0-0 push in the shackle.
2. With shackle pushed in, set your new combination.
3. Release shackle and scramble wheels to lock.
4. Make sure to record your secret combination.

Yes, it is possible to obtain a chart on CD or via e-mail. To obtain a new combination chart booklet, send a request to safetyeucs@mlock.com. Please allow 2-4 weeks from the receipt of the request to process your chart.

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.

Contact our sales assistant at +33 1 77 69 02 42 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.

The instruction sheet is located inside the packaging, in a drawer behind the plastic card. Use a pair of scissors to cut through the packaging and access the leaflet. The preset combination code is located on the upper right side of the instruction sheet.

To set your own combination:

1. You can set your combination to any pattern of any length. For extra security, it is best to create a longer combination
2. using several of the up, down, left and right positions. FOLLOW INSTRUCTIONS EXACTLY!
3. Dial the combination to open the lock. Keep the lock open.
4. On the back of the lock, use a pointed object to slide the reset lever into the "up" position (toward the "R").
5. SQUEEZE THE SHACKLE FIRMLY TWICE TO CLOSE THE LOCK AND "CLEAR" IT.
6. Pull up the shackle to open the lock.
7. Enter your new combination. Write your new code down in a safe place.
8. SLIDE THE RESET LEVER DOWN.
9. Insert the shackle into the lock and squeeze firmly.
10. Your lock will now open with the new combination.

To reset the combination again, repeat steps 1 - 8.
Remember to squeeze the shackle firmly toward the lock twice and release to "clear" the lock each time before opening it.

Please follow the steps outlined below: 
This lock is preset to operate at 0-0-0-0.

1. To set your own combination, dial the combination wheels to 0-0-0-0 and withdraw the lock.
2. Turn the knob 90 degrees in a clockwise direction to the designated position.
3. Now set your own combination, make sure the numbers are lined up with the marks.
4. Once you have selected your combination numbers, turn the knob back to the original position in a counterclockwise direction.
5. The reset operation is now complete.

Click on the PDF below that matches your lock model number for instructions on how to change/reset the combination:

• Model # 1500iD Speed Dial Combination Padlock
• Model # 1590 Precision Dial Combination Padlock

Note: Once the lock is set, there is no way to open it without the combination. Please make sure you record your new combination in a safe place.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!