Archived from the Tools In Action forum (Accessories). This thread is read-only.
I did find out there are very strange screws and their bits which never thought a screw would be designed this way.
One is called Ultra-Lok and other one is called Key-Rex. there are even more strange screws, but these two caught my attension.
Interesting. I have never seen these before
Yea, me neither! There are a lot of these strange screw profiles.
Wow same concept as automotive lug / wheel locks.
RT29 wrote:
On 3/22/2025 at 4:05 PM, RT29 said:Wow same concept as automotive lug / wheel locks.
I don’t exactly remember what the use of these two profiles were, but I think one is used in banking sector!
Altan wrote:
20 hours ago, Altan said:
I don’t exactly remember what the use of these two profiles were, but I think one is used in banking sector!
That makes sense for security reasons
Yes it’s crazy how far the design of some screws goes! Ultra-Lok and Key-Rex, it is clearly done for maximum security. I’ve never seen one before either, super interesting.
maxtolso wrote:
On 6/30/2025 at 7:03 PM, maxtolso said:Yes it’s crazy how far the design of some screws goes! Ultra-Lok and Key-Rex, it is clearly done for maximum security. I’ve never seen one before either, super interesting.
The reason that I search these things is that I wanted to patent a screw profile myself, but it does not look like any possible profile is left unpatented. loool
Altan wrote:
On 3/18/2025 at 4:21 AM, Altan said:I did find out there are very strange screws and their bits which never thought a screw would be designed this way.
One is called Ultra-Lok and other one is called Key-Rex. there are even more strange screws, but these two caught my attension.
I recently came across Ultra-Lok and Key-Rex too had no idea screws like that existed. Really interesting how far screw design has come!
Darrener wrote:
On 7/10/2025 at 4:38 PM, Darrener said:I recently came across Ultra-Lok and Key-Rex too had no idea screws like that existed. Really interesting how far screw design has come!
Yeah, it is crazy!


