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American Locks master keying

Information about locks themselves. Questions, tips and lock diagram information should be posted here.

American Locks master keying

Postby dosman » 13 Dec 2006 3:38

Is it common to find locks with master key bits on every pin? I opened an 1105 and to my surprise there where master key bits on each pin. No spools however which surprised me from what I've heard about these locks. However despite all the additional chances to 'win' I still have not opened this one. My day is coming soon though :).

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Postby Isakill » 13 Dec 2006 14:51

I have a red anodized american that a friend gave me "I don't have a key so if you open it you can have it" :lol:
I eventually opened it and promptly took it apart to see what made it tick, bothe the top and bottem pins had security features but I saw no master keying process in place. I've since put it away but when I find it i'll re-pick it and take pics of the pins if the moderators wouldn't mind. regardless I have a blank for it now so i'm going to key it for use :wink:
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Postby Isakill » 13 Dec 2006 14:56

I just realized I can't edit my posts:

quick tip, the spring has EXTREMELY heavy tension so it takes quite a bit of force to move the plug when the pins are on the shearline.

and my lock is a 1105 as well.
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Postby Gordon Airporte » 13 Dec 2006 22:56

I can see masterkeying for vending machines, but I can't see how you'd need that many levels of access.
Perhaps the security drivers were lost (or never purchased in the first place) when it was rekeyed.
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Postby dosman » 13 Dec 2006 23:04

This was a pair of locks I got off ebay, the reverse side of the body is engraved with "Marathon" :). The other one smells like fuel oil so I'm sure these where used to lock up gas pumps or the caps to their storage tanks.
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Postby zeke79 » 13 Dec 2006 23:13

Well there are advantages and disadvantages to putting master pins in more than a couple chambers. The main reason being, if you had a small master system with only one chamber needing mastered, anyone could take only one lock apart and easily determine a master key with some minimal trial. Even with two chambers it is easy enough to decode quickly by just taking the lock apart. Even better if you can get two locks though.
For the best book out there on high security locks and their operation, take a look at amazon.com for High-Security Mechanical Locks An Encyclopedic Reference. Written by our very own site member Greyman! A true 5 Star read!!
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Postby HeadHunterCEO » 13 Dec 2006 23:18

or they were used to safety "lock out" valves and such
being they are red and MK this is a strong possibility
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Postby UWSDWF » 13 Dec 2006 23:20

yeah i tend to see american pads as wit lockout tags attached
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DISCLAIMER:repeating anything written in the above post may result in dismemberment,arrest,drug and/or alcohol use,scars,injury,death, and midget obsession.
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Postby dosman » 13 Dec 2006 23:39

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Postby zeke79 » 13 Dec 2006 23:47

OOOOoooh, ya wanna trade or sale that lock? I work for MPC, MAP, MOC, and other names they have transisitoned to. I'd love to see what MK system has been compromised and report it :D .
For the best book out there on high security locks and their operation, take a look at amazon.com for High-Security Mechanical Locks An Encyclopedic Reference. Written by our very own site member Greyman! A true 5 Star read!!
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Postby dosman » 14 Dec 2006 9:57

I'd be up for a trade, PM me and we can talk.
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Postby I Pik U » 14 Dec 2006 13:40

I don't think you will find many American padlocks mastered. It all depends on the end users requirements. If Marathon is a chain of gas stations, I can see they'd want a master key with individual keys for each location.

I doubt a safety lockout padlock would be mastered, but anythings possable. A lot of safety padlocks we sell, the customer requests only ONE key with each lock. The whole idea of a safety padlock is to safely shut down some thing for maintenance, where only the person who put the lock on can unlock it. If the padlock were mastered, that could defeat the purpose and be dangerous.
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Postby zeke79 » 14 Dec 2006 13:56

Marathon is also a chain of refineries :wink: .
For the best book out there on high security locks and their operation, take a look at amazon.com for High-Security Mechanical Locks An Encyclopedic Reference. Written by our very own site member Greyman! A true 5 Star read!!
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Postby HeadHunterCEO » 14 Dec 2006 18:14

actually they are almost always mastered

can learn about some technique here

http://www.westernsafety.com/northlocko ... ckpg2.html
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Postby BazookaMedic » 19 Dec 2006 19:39

About how much does an american run for?
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