*Bump Keys are ON SALE*
What is a bump key?
Posted 20 October 2000 - 06:01 PM
Since these keys are cut to the deepest level they are often reffered to as '999 keys'.
Bump keys can be made by hand. One problem that many have while making bump keys is that there is a lot of inconsistency between each key that is made. The best, and most effective way to obtain a bump key is to order one online.
You would think a locksmith would cut a key for you... guess again! Most probably won't cut you a bump key if you ask for it by name, and if you give him the "code" for a bump key (debatably, "10,10,10,10,10" for most key types or "7,7,7,7,7" for a Kwikset, though some would say 9s or 6s), you're definitely going to raise his eyebrows. Not only that, but locksmiths are now aware what people are doing with these "999" keys.
A bump key is a key in which all the cuts are at maximum depth. Bump keys are sometimes called '999' keys because all cuts are at maximum depth. (Dimple locks are 777 keys).
By The Way... the reason why they say a 10-10-10 key is better is because if you have a pin that requires a 9 cut depth then when you pump it you are more likely to knock the bottom pin past the sheer line. So, the easy solution is to just go a little bit deeper.
The reason you have heard so much more about the depth cuts is because the pins rest in those depths and if one of the pins being bumped has to stay low so that it doesnt shoot up and block the shear line, the maximum depth cut would allow the longest pin to rest all the way down so that wouldnt happen.
As a bump key is made, there is a relationship with the peaks and valleys. As you cut deeper into the key, let's say depth 9 on a Schlage SC1 key, a peak which is surrounded by two 9 cut valleys shaped like this \_/ will automatically be a certain height.
When you actually 'bump' the key here's what's going on: think of the row of metal balls that when you swing the right most ball at the row of balls, the balls transfer the energy to the left most ball and since it has an equal mass as the right most ball, only it swings up.
Basically all the sides of the cuts touch the buttom of all the pins and when the key is struck, energy is transfered to the top pin causing it to bounce up - leaving the buttom pin in place.
Posted 30 August 2006 - 12:13 PM
Posted 30 August 2006 - 01:17 PM
the "regular" house key code here in the US would be a Kwikset cut to 77777. If you were to ask a guy operating a coded key machine, he would most likely just wonder why you're asking for that, and probably not put 2 and 2 together. BUT- if you DO run across someone who knows what is going on in the world around him(rare in hardware stores, unfortunately), you'll get either a guy who won't do it, or a guy who gives you 20 questions about WHY, and possibly asking you for ID or something to record your identity...
I have ran into the problem of places not having coded key machines. I have only ran into key duplication
Posted 28 October 2006 - 04:53 AM
So what depth are Bumpkey US Kwikset keys set to? 7 or 9
KW1 (and KW10) are cut to 7.
999 is a misnomer. Or, better, an easy way to say 'the deepest cut on this particular key.'
SC1 is actually a 99999 cut at the deepest cut. PZ1 would be a 77777. etc.
Also, the spacing between cuts and the length of the cut are different for these 3 examples. Also, the difference between the depth of a 1 and 2 cut is different for each. Lots of keys, lots of variables.
Posted 09 December 2015 - 01:16 PM
Therefore it would be best to have a 999 key right? Or is it possible that there will be door locks that are designed not be bypassed by a 999 key but can be bypassed by a 777 key? Thanks in advance.
Well generally 999 key works good with majority of door locks but nowadays we have different companies offering unique models so yes, there might be a chance that we need to think out of the box