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Actually, they do.

Look at the packages for "Key Numbers"

Every lock package will have a prominent 3-5 digit "Key Number" somewhere on the outside of the package, typically the back. All packages with the same key number use the same key.

So if you have 3 knobs and 2 deadbolts you all want keyed alike, buy 3 knob+deadbolt sets of the same number.

Generally there are 3-8 lock packages in a box. Every package in the box will have the same key number. If the packages on the shelf are a jumble, see if they have a new unopened box. This doesn't work across dissimilar items, so if you find 2 knob+deadbolt sets numbered 11455, don't turn the store upside down looking for a separate knob numbered 11455; you won't find it, it'll be at the Casper Wyoming location if it even exists, and they're not tracked for security reasons.

Speaking of security... Buy your lock-sets far away, at places you don't normally shop. Once we demoted someone in a club and changed the knob/lock to his office. He drilled out ours and fit his own knob-lock. I noted the model, went to the local hardware store and bought one of each key number. Voilà. He could never figure out how I did it!

Some brands of locks are self-rekeyable. But they're cheap.

Certain low-midline brands of lock allow you to "re-key" the lock to any arbitrary key. You unlock it, insert a special tool, and then insert the new desired key. These are compatible with certain keyways. I'm not a fan, honestly; the mechanism seems flimsy given the price point.

Your friendly neighborhood locksmith can do anything

They can make anything you want. But the price will be nosebleed compared to the other options. They can cheerfully build any lock-set (even a padlock!) to match your key.

First, there are 3 kinds of locksmiths:

• Scammers who flood Google. They collect your contact info and sell it to shady "outbound only" locksmiths who come to you, overcharge you, and/or case your house for a later break-in.


• Outbound-only. They have a truck, not a shop, and their business is the urgent call and collecting that service charge for coming to you.


• Shop-based locksmiths (it need not be neat). They are happy for you to come to them, and can make anything since they have a well-equipped shop. They cheerfully handle routine requirements at sensible cost (for locksmiths).

So when calling around, if they pressure you to come to you, hang up the phone: that's a fly-by-night with a truck. Going to their well-worn location assures they're the real deal. You can also find them in 10-year-old phone books.

You say "they don't need to be high security our anything", so perhaps you could consider SmartKey - Re-Key Technology & Key Control - Weiser.

You can rekey them yourself in literally 10 seconds each. The first time you do it, it will take you longer, simply because you've never done it before, but it really is trivially simple to do.

Any time you want, you can rekey them again, with no expense other than the cost of cutting new keys.

It's also handy if you need to temporarily give a key to a handyman. Rekey it for that purpose and then change it back afterwards.

(I know this sounds like an ad, but it isn't. I've personally found this to be a handy and useful system. But it's definitely not as secure or well made as some other products.)

I bought two deadbolts (at the blue big box store if it matters) and had one re-keyed to match the other. I believe this is an option, though it costs a bit to have them re-keyed (~$5 per lock).

Just so you are aware of all your options it seems they (big box stores) as sell re-keying kits, though I have no experience with them. Blue box store link Orange big box store

The key codes are on the packages go through their inventory and pick out 3 with the same key code, this is how I do it without any extra charge.

You could hire a locksmith to change them all to have matching cylinders, but I've found that many packages at big retail stores have a code written somewhere on the packaging which identifies the lock pinout.

If you buy multiple packages having the same code the keys will match. This will take some time looking at all the boxes in the store but it works. The bigger the store the better because you're more likely to have access to more retail packages to inspect.

In case you're unable to find sufficient quantity of locksets you like with matching key codes, and if your DIY drive is moderately strong, consider re-keying the locks yourself. Re-key kits for the common Schlage SC1 and Kwikset keyways with enough parts to do all six locks are available through online marketplaces for around US$25.

I've used kits that consisted of no more than a set of zipper bags filled with pins and a plastic follower tool. For your six locks a kit that includes at least 12 pieces of every numbered pin should suffice.

The hardest part is figuring out how to access the lock cylinder. Second hardest is remembering to hold the follower snug against plug so that the upper pins don't jump out. If you can do that, it's a simple thing to dump out the old pins and install a new set to match the chosen key.

If the new locks use the same keyway as the existing locks you could practice the technique on the old locks before starting on the new.

We went to a supplier (sells lots of hardware) and asked for the set of 5 locks with a series of keys - master key to open all and sub keys that would only open combinations. So front entry and room A and front entry and room B.

So it is possible, but you need a good shop, not one of the common DIY cheap & cheerful stores.

Buy a two-pack and then one additional set. If the store you bought them at doesn't do rekeying then take them to a locksmith, or have them come out to you, and have them rekey the third set to match the two.

Amazon has large sets of knobs/deadbolts (5-6) that are keyed the same.