briancaos on May 5th, 2017 at 22:31 UTC »
The one-way screw (or bolt, as this is) is commonly used for installing alarm and security products. If mounting safety hinges on your window, you want to make sure that they cannot be removed from the outside simply by unscrewing the screws.
axloo7 on May 5th, 2017 at 23:15 UTC »
Yes it can.
MechaNickzilla on May 5th, 2017 at 23:40 UTC »
All my screws end up looking like this anyway.
![image showing Screw can't be removed after use [640x640]](5814892d-41d3-51eb-ad3a-656ae95687b4.jpg)
briancaos on May 5th, 2017 at 22:31 UTC »
The one-way screw (or bolt, as this is) is commonly used for installing alarm and security products. If mounting safety hinges on your window, you want to make sure that they cannot be removed from the outside simply by unscrewing the screws.
axloo7 on May 5th, 2017 at 23:15 UTC »
Yes it can.
MechaNickzilla on May 5th, 2017 at 23:40 UTC »
All my screws end up looking like this anyway.