picking the back keyhole of combination MASTER lock

[undeadspacehippie]

I found them on the Master Co. website, I don't know if you can get them from anywhere or if you have to order them through an institution - I may ask my cousins who are still in high school (i'm 15 years older than them) if they can purchase a couple for me.

[Wolfman]

I found them on the Master Co. website, I don't know if you can get them from anywhere or if you have to order them through an institution

I'll ask my shop teacher tomarrow. We have a million of em in my school and the same key opens them all!

[illusion]

One key opens every one?

I wonder what should happen, were a student to 'obtain' one of these keys?

Possibly the same outcome as a student making a bundle of shims and running round school on a sugar high.

[UWSDWF]

I provide security in a Factory and (for security reasons) all of the personnel lockers have these on the ( I'll add a picture tonight of one in detail). For these lock we have a big ol' binder with serial listing and accompanied combo. On the lock itself, beside or under the serial, has the key number for the corresponding key. I have picked and shimmed these on numerous ocassion with great ease (do it in >10sec. raking). So beyond being a little small, not much smaller than a rinkydink padlock, its pretty easy. The Dudley ones are harder though.
Oh well I've rambled enough now
Cheers
Trevor

[Varjeal]

Since it hasn't been said yet I'll say it. School locker locks are not your property. The fee you pay for them is a rental fee only so unless you have permission you shouldn't be messing with them in the first place.

These padlocks are generally NOT masterkeyed at all. They are keyed alike in large groups. For that reason these locks are also generally not found in hardware stores and the like because they are considered "special purpose". In order to obtain these locks for your own private practicing or collection you would either have to find them at an auction site or purchase directly from a supplier or locksmith.

As mentioned earlier, they are a 4 pin lock without security features and shouldn't provide difficulty other than their minute size.

[NKT]

American school kids have no rights when in school. There's plenty of case law on it.

[Wolfman]

I found them on the Master Co. website, I don't know if you can get them from anywhere or if you have to order them through an institution

I'll ask my shop teacher tomarrow. We have a million of em in my school and the same key opens them all!

My teacher wouldent sell one too me.... He said he would like too but they belong to the school, not him.

American school kids have no rights when in school. There's plenty of case law on it.

WAIT... I DON'T have the right to bear arms while in school?

[What]

To answer the original poster’s question, yes, like any other lock, the keyway on the back can be picked. It is just an ordinary 4 pin lock, and I’m pretty sure it does not have any security pins. The only challenge it presents is that it is a very small keyway, and torqing it without the wrench getting in the way can be a bit tricky. It must be torqued clockwise, and it may be easiest to place the wrench in the keyway just above the pins.

i have one, i believe it is a 3 pin lock and no it doesnt have security pins.

i have had great sucess with using a thin wrench in the bottom of the keyway as it allows for more working room(all you need to do for these locks is to move the pick in an up and down rocking motion).

[searsman05]

I also had one of these locks back from when i was in high school. You would purchase the lock for like 5 bucks and keep it all four years you were at the school. After that it was yours. I had my friends give me all the locks after just to play with them. I believe the one i had was a three pin design and it was very easy to pick. I just pulled it out yesterday when i saw this thread and gave it a try it was almost so easy it was boring so i just threw it away because i could not remember the combo and have no key for it.

Back when i was in Jr high school one of my friends grabbed a teachers keys and well he never returned them. And yes schools mostly have these locks so the teachers or staff can do random locker searches easily. We had a lot of fun with those keys. If we knew someone we would open there locker take there backpack out then turn it inside out put all there books pens etc inside of it then zip tie it closed then zip tie it in the locker. Man it was really a kick back then. We had a lot of laughs from that.

But i just wanted to mention that what my friend and i did was wrong we did not own those locks or keys so we were wrong in what we did and no body should try this since it is against the law. I was young and stupid and really did not think about what would have happened if i was caught with those keys.

Anyway that was enough babbling on about my life stories. The whole point was that it is easy to pick mostly found in schools and usually are all keyed the same and that is about it.

-James

[keysman]

There are about 90 + different keys that go to the 'override" on master combination locks.

If I remember correctly they are 4 pin, no security pins but on the small master keyway.

The key blanks are 'semi" restricted so it is unlikely that any locksmith will sell them to you.

You can find the combination by several methods .. check the web or do a search on here.

A good place to find these locks is at yard sales or flea markets.. never pay more than 25 cents for a lock that doesn't have the combination.

[What]

well, i have pics!!!!

i was bored today(school is out) so i ground the back off the lock.


next the back plate removed.


and the back plate.


cylinder(sorry for the blur) is a 3 pin masterlock core.




locking mechanism, you can see the extra "lever" that the cylinder engages the hasp for the shackle with.

[what1sth1s]

just thought i test my new camera out. heres a better pic of the 4 pin cylinder lock inside a masterlock padlock.

[Shrub]

Thats definatley a 4 pin is it?

[unbreakable]

It is a 4 pin, and not a three pin.

I have picked this lock a few time, but got bored quick. I just used a small tension wrench, and a straight pick, which seemed to work quite well. Just insert the pick, jiggle around a little, and presto, it's open.


Although there are only three holes in the bottom, there is another pin right under where the large cut out bit is. Hope this makes sense



Unbreakable

[Shrub]

Ah ok fair enough, it was the number of holes that mixed me up but the chamber seemed longer,

Its a joke really i suppose, you may as well just put a 4 pin padlock on the locker, the only advantage is that you dont need to carry a key around with you.

I guess the key combo working all the locks is dangourus if reverse engineered and a master key made, seems silly to me.