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Master Lock 646D Luggage Lock, Set Your Own Combination, Black Finish, 1-Pack

4.0 out of 5 stars 724 customer reviews
| 28 answered questions

Price: $4.59 & FREE Shipping on orders over $49. Details
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1 Pack
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  • Suggested uses, luggage, backpacks, bags, small cabinets, briefcases, computer bags, for indoor use only
  • 13/16-inch (20mm) wide durable metal body with upscale black finish
  • Set-your-own combination convenience
  • Bronze-plated steel shackle for cut resistance
  • Easy to set and reset
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$4.59 Add-on Item & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Master Lock 646D Luggage Lock, Set Your Own Combination, Black Finish, 1-Pack
  • +
  • Master Lock 1500iD Speed Dial Combination Lock, Assorted Colors
  • +
  • Master Lock 140D Solid Brass Keyed Different Padlock with 1-9/16-Inch Wide Body, 1/4-Inch Shackle
Total price: $17.04
Buy the selected items together

Special Offers and Product Promotions

Size Name: 1 Pack

Product Description

Size Name: 1 Pack

Product Description

13/16-inch (20mm) Set your own combination luggage lock. Corrosion resistant, brass plated, steel shackle and black zinc alloy body, 7/8-inch Shackle, 1/8-inch shackle diameter.

From the Manufacturer

13/16" (20mm) Set your own combination luggage lock. Corrosion resistant, brass plated, steel shackle and black zinc alloy body, 7/8" Shackle, 1/8 -Inch Shackle diameter.

Product Information

Size Name:1 Pack

Technical Details

Part Number 646D
Item Weight 2.2 ounces
Product Dimensions 5.4 x 2.6 x 0.8 inches
Item model number 646D
Size 1 Pack
Color Black
Item Package Quantity 1
Number Of Pieces 1
Batteries Required? No
Warranty Description Limited Warranty

Additional Information

ASIN B000FKEZ3S
Customer Reviews
4.0 out of 5 stars 724 customer reviews

4.0 out of 5 stars
Best Sellers Rank #14,517 in Home Improvements (See top 100)
#60 in Home Improvement > Hardware > Padlocks & Hasps > Keyed Padlocks
#2,869 in Home Improvement > Safety & Security
Shipping Weight 2.4 ounces (View shipping rates and policies)
Date First Available May 19, 2006

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From the Manufacturer

4689TSLV TSA Accepted Luggage Locks with Keys 4681TBLK TSA-Accepted Keyed Luggage Lock 646D Luggage Lock, Set Your Own Combination 4688DRED TSA Accepted Cable Luggage Lock 4687DNKL Instant Alert TSA Accepted Luggage Lock
4689T 4681TBLK Model in this Listing 4688D 4687DNKL
Lock Type Keyed Keyed Set Your Own Combo Set Your Own Combo Set Your Own Combo
TSA Accepted -
Pack Size 2-Pack 2-Pack 1 or 2-Pack 1-Pack 1-Pack
Color Choice of Colors Black Black Choice of Colors Nickel
Special Features 2 Locks, Keyed Alike 2 Locks, Keyed Alike - Flexible Cable Shackle Instant Alert indicates when opened by TSA

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 2 Pack Verified Purchase
These are excellent locks. Several people have noted not TSA approved, but every good hotel their has learned how to open the TSA approved locks. Yes that's what you need for checked luggage at the airport, but that's not what you want in your hotel room or if you've left your luggage with the porter. Outside of checking your bag with the airline you want one that is not TSA approved. That's why I bought these.
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Size: 2 Pack Verified Purchase
These locks are fairly small, but seem to be very strong. Setting your own code is easy and only takes moments. The only negative is that the numbers on the dials can be hard to read in indoor light as others have pointed out. Also, they are not TSA approved, meaning if you put these on the outside of your luggage TSA will not be able to open them to inspect them. This is a plus to me as I don't care to lock my luggage for transport on the plane. It's the need to put items in my luggage and lock it while it's stowed at the hotel that I'm concerned with. Dishonest staff all know the TSA codes and having locks like these keep them out of your bags.

All in all, these are an excellent choice for luggage locks. They're strong and sturdy (in the Master Lock tradition) and you get to set your own code to unlock them. I deducted only for the readability problem of the letters in indoor light. 4.5 stars.
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Size: 2 Pack Verified Purchase
Didn't have any problems with it locking up or the combo changing by itself. Used these on my backpack when I traveled to Europe to make sure Pick-pocketers didn't take stuff from my backpack.
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Size: 2 Pack Verified Purchase
Only wish they came in two colors so it was easier to distinguish the two.

If you're not sure how to change the code, it's very simple. With the combination set to "0 0 0", pull the "U" portion of the lock up and turn it 90 degrees. There is a small notch where the "U" piece is connected so line it up and push it down firmly. While in this position, you will find that you can now turn the dials to set a new combination. Just be sure that you are pressing down firmly the entire time.

When you are done, take the pressure off and use the lock as you normally would with your own combination now! Just repeat those steps anytime you want to change the code.

If you're worried or unsure about resetting the combination, I would suggest doing one number at a time just so you don't reset the code accidentally.

PS - If you found this review helpful, would appreciate if you'd take one second to give it a helpful vote below. These opinions are my own and not influenced by the manufacturer or the supplier. I use reviews from other customers when making my purchase decisions and hope this was helpful to you.
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Size: 2 Pack Verified Purchase
I used these locks to lock my suitcase and valuables away during my recent trip to Europe. They were easy to set up and worked perfectly fine. Even though they weren't TSA approved I didn't have an issue since I just placed them on once we were settled in our bed and breakfast.
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Size: 2 Pack
We have many of these at the university that we use to seal computers instead of luggage. These are super easy to break into. If you lift the metal hook until it stops, you can literally "feel" the lock unlock when you switch to the right number (Starting from the bottom to the top). Bottom line is, these are fine when you have sight of your luggage or don't have anything too valuable in them. I wouldn't trust them for anything else. Also, with 10 minutes of free time, you can physically bend them until they break.
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Size: 2 Pack Verified Purchase
These combination locks were super affordable and came with two locks, which I was very happy about! I started going back to the gym recently but I was out of a lock, and I was afraid I would have to purchase one of those master locks with a large dial on it (which I have a hard time opening sometimes) or the ones with a key, and I'd lose the key somewhere at the gym. These locks are super compact and you can set your own combination. Although these are less secure because of how small they are, and there are only 3* 0-9 digit combinations that you can set it as, I highly doubt anyone at the gym would sit there and try all the combinations. Anyway, I'm really glad that comes with two so I can give one to my co worker who also goes to the gym with me. It was also very easy to set up the combination the first time. One thing I do not like is that it is difficult to turn the dial sometimes.
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Size: 2 Pack Verified Purchase
Oh, did you want to lock up something valuable in a tiny locker? Then this is the lock for you! Safely store your valuables in places like the gym and your very own apartment when you have a sketchy roommate who keeps making things disappear like your cottage cheese. I mean who eats cottage cheese anyway and why are you eating mine?
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