All partition security screws and fasteners are in stock for fast delivery. We offer partition security screws that are one way screws used with a flat head screw driver. Partition security screws must be used with toilet partitions. We only offer the one way screw type, the torq 27 t-bit is another version that we do not offer at this time. The through bolts are also called sex bolts which are male and female bolts for extra strength. Notice we have put the gripping range to make things easier. If you have a 1" panel and are attaching a bracket to it, you should use the 1-1/16"-1-5/16" range. We also offer the un do it tools, This tool will help undo the one way screws and remove them. This process involves lining the tool up to the screw head and hitting the tool with a hammer lightly to create divots in the head of the screw so you can un do it. The screws are threaded so once you start it they should just unscrew with fingers.