Unlock Any 4-Digit Combo Lock: Step-by-Step Guide

If you own a combo lock, there may come a time when you forget the code and find yourself locked out. Instead of panicking or calling a locksmith, follow this step-by-step guide to unlock any 4-digit combo lock.

Unlock Any 4-Digit Combo Lock: Step-by-Step Guide

Materials Needed

  • A shim (can be made from an aluminum can)
  • Lube spray (WD-40 or similar)

Step 1: Insert Shim

Insert the shim into the bottom of the lock where it meets the shackle. Push it all the way in until you feel resistance.

Step 2: Turn Shim & Shackle

While holding tension on the shackle, turn both the shim and shackle at once until they click into place.

Step 3: Set Tension On Shackle

With tension set on the shim and shackle, rotate each dial slowly to determine which is hardest to turn. This is likely due to being in line with one of the notches requiring correct digits.

Step 4: Determine First Digit

Set that first difficult dial aside and repeat for remaining three dials until finding another difficult locker roller disc . That roller disc combination will reveal an appropriate digit.

Repeat With Other Digits

Repeat this process with each additional dial until all four digits are discovered by rearranging which rollers have been removed between iterations of finding difficult-to-move dials.

Note that if adding resistance makes no difference it means incorrect roller numbers are being used or trying different combinations altogether.

After following these steps, your combo lock should now be unlocked! However, keep in mind that while this technique works for many models of combo locks, some more advanced locks may require alternative methods or professional help.

Remember to always use these techniques carefully and responsibly; only do so when necessary such as forgotten codes—not for unlawful entry purposes.


Here are three popular FAQs and answers for “Unlock Any 4-Digit Combo Lock: Step-by-Step Guide” based on user comments and feedback:

1) Q: Can this method be used for any 4-digit combination lock?
A: This method works with most common 4-digit combo locks found on gym lockers, school lockers, and other similar types of locks. However, it may not work with all types of combo locks.

2) Q: Will this damage the lock or make it unusable afterward?
A: No, following these steps should not damage the lock or make it unusable afterward. The process does not involve using force or breaking any parts of the lock. Once you have successfully unlocked the device, you can continue to use it as normal.

3) Q: Is this legal? Can I get in trouble if I try to unlock someone else’s locker?
A: It is important only to use this technique on your own locker or one that you have permission to access. Attempting to unlock someone else’s locker without their consent is illegal and could result in fines, imprisonment or other legal consequences.