deadbolt - double cylinder - unscrew prevention

[shoelace]

Hello,

I notice that on most double cylinder deadbolts there are two screws on one side that allow the deadbolt housing to be disassembled. I'm looking for a double cylinder deadbolt for my fence door that cannot be disassembled when the door is locked - ie. access from the side of the door is required for (easy) disassembly.

I'm worried that someone can climb over my fence and disassemble the double cylinder deadbolt from the inside.

Thanks

[Raymond]

Check with most locksmiths in your area. Arrow and Lori both make deadbolts that hide the screws. The Arrow screws can only be reached with a key, by picking, or by drilling the screw cover plates. Lori dead bolt screws can only be accessed when the door is opened.

[Squelchtone]

Medeco makes a deadbolt that includes some Allen bolts and includes ball bearings that just jam in the screw holes so that someone can't do what you're worried about. Easy to find a Medeco on ebay for a good price, much lower than retail.

Squelchtone

[Raymond]

Thanks for reminding me Squelchtone. Several brands, including Kwikset, can provide one-way screws to hold the deadbolts together. Also Schlage provides the little pins to hammer into the face of the screw. Both can be gotten out but really slow things down.

Also on several interchangeable core deadbolts, the screws cannot be accessed until the core is removed and the face plate turned. I nearly went out of my mind the first time I saw one of those and couldnt take it apart.

[exspook]

I have seen these fitted in the UK as the bolt throw is nice and long, on the ones seen several had the fixing screw heads filled in with car body filler making unscrewing very difficult and one actually had the screw heads partially drilled out like security screws so no way could you get a screwdriver to bite in and get purchase to undo.

If someone hops over the gate isnt it game over anyway??

[shoelace]

Thanks for all this info. Seemed pointless to me that someone would go to the trouble of specifying double barrel and not mind the fact that one could simply remove the lock with a phillips head screwdriver.

To answer exspooks question - if someone can open the door in the gate then it will make it easier for him to leave the scene with stolen property through that same door ... particularly large items. Also, I have a hidden catch for the gate that is accessible only when the door is open. If they can open the door then they can open the whole gate. Then they could drive in their vehicle and load it up. Not that I really have much of value to steal but for a few extra bucks I'd like the piece of mind that I don't make it too easy for the criminal.

Can any of these locks you mention take Weiser keys? The rest of my house uses Weiser deadbolt so I thought it might be good to set everything for one key. Or perhaps this might be an opportunity to upgrade my house deadbolts with something more secure? Do Weiser deadbolts have a good reputation on this site? I don't want to pay too much more - but maybe up to $80.

Thanks.

[Squelchtone]

Thanks for all this info. Seemed pointless to me that someone would go to the trouble of specifying double barrel and not mind the fact that one could simply remove the lock with a phillips head screwdriver.

To answer exspooks question - if someone can open the door in the gate then it will make it easier for him to leave the scene with stolen property through that same door ... particularly large items. Also, I have a hidden catch for the gate that is accessible only when the door is open. If they can open the door then they can open the whole gate. Then they could drive in their vehicle and load it up. Not that I really have much of value to steal but for a few extra bucks I'd like the piece of mind that I don't make it too easy for the criminal.

Can any of these locks you mention take Weiser keys? The rest of my house uses Weiser deadbolt so I thought it might be good to set everything for one key. Or perhaps this might be an opportunity to upgrade my house deadbolts with something more secure? Do Weiser deadbolts have a good reputation on this site? I don't want to pay too much more - but maybe up to $80.

Thanks.

Sounds like you're on a budget. I'd weld a plate over the side that has the screw holes, with a hole in the middle of the plate big enough only for the key to be inserted into the lock. Other then than, you have Weiser, not really hard to pick or drill, so before you go overboard protecting the screw holes, look at the bigger picture. Short of putting out razor wire on top of your fence and maybe some security cameras, .. wait.. for under $80 you cant do any of that. just use some JB Weld in the screw holes, or use a drill to destroy the Phillips head of the screws so they are stripped out.

problem solved.
Squelchtone

[Tyler J. Thomas]

Medeco makes a deadbolt that includes some Allen bolts and includes ball bearings that just jam in the screw holes so that someone can't do what you're worried about. Easy to find a Medeco on ebay for a good price, much lower than retail.

Squelchtone

The ball bearings are anti-drilling measures.

They do not go on top of the screw heads to prevent someone from screwing them out. They're meant to be placed towards the outside, or locked portion, of the cylinder in case anyone attempted to drill for the screws holding the deadbolt on the door. Like a balling bearing hardplate, if a bit hit them, they'd spin with it.

Or maybe I'm interpreting you wrong?

[shoelace]

Medeco makes a deadbolt that includes some Allen bolts and includes ball bearings that just jam in the screw holes so that someone can't do what you're worried about. Easy to find a Medeco on ebay for a good price, much lower than retail.

Squelchtone

Yes, my friend was talking about the little ball bearings in the Medeco deadlocks. Apparently they squeeze right inside the hex holes in the Allen bolt heads - then your Allen key no longer fits into the hex holes. So if you want to disassemble the deadbolt you first need to contend with having to somehow dig these little ball bearing out of the hex ... apparently a very annoying and time consuming operation.

[shoelace]

Sounds like you're on a budget. I'd weld a plate over the side that has the screw holes, with a hole in the middle of the plate big enough only for the key to be inserted into the lock. Other then than, you have Weiser, not really hard to pick or drill, so before you go overboard protecting the screw holes, look at the bigger picture. Short of putting out razor wire on top of your fence and maybe some security cameras, .. wait.. for under $80 you cant do any of that. just use some JB Weld in the screw holes, or use a drill to destroy the Phillips head of the screws so they are stripped out.

problem solved.
Squelchtone

Squelchtone,

Good idea ... some JB Weld or maybe just epoxy resin in the phillips head. A bit similar to the Medeco ball bearing blocking the hex socket. That fix sounds well suited to the application. I just don't want it to be too easy for any fellow to jump the fence and open the door using a simple multi-tool in his back pocket.

Still, I find it strange that so many of these double barrel deadbolts can be disassembled so easily. It really seems to defeat the purpose of them being double barreled?

Reading some posts on this site makes me think I should perhaps consider a higher grade deadbolt for the rest of the house. I'll have to start looking into this.

Regards,

shoelace

[Evan]

Medeco makes a deadbolt that includes some Allen bolts and includes ball bearings that just jam in the screw holes so that someone can't do what you're worried about. Easy to find a Medeco on ebay for a good price, much lower than retail.

Squelchtone

The ball bearings are anti-drilling measures.

They do not go on top of the screw heads to prevent someone from screwing them out. They're meant to be placed towards the outside, or locked portion, of the cylinder in case anyone attempted to drill for the screws holding the deadbolt on the door. Like a balling bearing hardplate, if a bit hit them, they'd spin with it.

Or maybe I'm interpreting you wrong?

Every Medeco deadbolt I have ever seen installed has come with TWO sets of ball bearings, the larger pair are meant to be drill protection in the manner you described protecting the end of the screws towards the exterior side of the door from being drilled...

The smaller set are intended to be driven into the sockets of the allen head cap machine screws that hold the two halves of the lock together through the crossbore hole... They would be concealed under the thin metal trim plate and most people aren't aware of what they are for or don't know how to remove them after installing (yes it is possible but it takes time) so they skip that step...

~~ Evan

[Evan]

Check with most locksmiths in your area. Arrow and Lori both make deadbolts that hide the screws. The Arrow screws can only be reached with a key, by picking, or by drilling the screw cover plates. Lori dead bolt screws can only be accessed when the door is opened.

+1 to the Kaba/Ilco "Lori" deadbolt...

Absolutely ZERO exposed screws once it its assembled, threading the mortise cylinders into the lock mechanism is what holds the lock in place... The Lori is even available with a "drive in" round bolt which doesn't have screws to hold it in place... Cylinders are retained by small allen retention screws which are visible from the side with the door opened...

Selection of keyways is UNLIMITED -- these locks will take any mortise cylinder, the length of which would be determined by the thickness of the door...

~~ Evan

[shoelace]

+1 to the Kaba/Ilco "Lori" deadbolt...

Absolutely ZERO exposed screws once it its assembled, threading the mortise cylinders into the lock mechanism is what holds the lock in place... The Lori is even available with a "drive in" round bolt which doesn't have screws to hold it in place... Cylinders are retained by small allen retention screws which are visible from the side with the door opened...

Selection of keyways is UNLIMITED -- these locks will take any mortise cylinder, the length of which would be determined by the thickness of the door...

~~ Evan[/quote]

This Kaba/Ilco "Lori" deadbolt - what is the model number? I'm searching online and not finding the one you describe.

Thanks

[MacGnG1]

You can buy one-way screws at home depot/lowes for very cheap (2 bucks or so). that may be the simplest route to take along with some epoxy to hold em in there.

[Raymond]

Please do not locktite-red or epoxy your screws in to the lock. Even you may need to rekey them some day.