Door Rack Bolts

[Iamcazzy]

I need to secure a solid wood internal door at home for a few days in my absence. I've been looking at rack bolts which I think will do the trick and I can fit them myself into the edge of the door and the frame. The link shows the sort of thing I mean:

http://www.toolstation.com/shop/Ironmongery/d170/Locks/sd2611/Rack+Bolt/p93001

My question is about the key, which looks like a splined rod. I'd like to know if a key of this type will open any rack bolt anywhere (ie it's not specifically made to go with the rack bolts bought) and is it possible to open a door fitted with a rackbolt using some twisting and turning with a screwdriver blade for example. I suppose I need to know how secure these bolts are in reality. I don't expect them to give me the security of Fort Knox but I'm reluctant to go down the road of fitting a mortice lock.

Thank you.

[melv16]

Fit a padlock or a lockable door bolt.

[bhg481]

One key fits all. They're meant to supplement the "real" lock, just providing strength.