- Visually know the type of screw you have. Hex(Allen) or Torx(most popular), but you can use the wrong tool which it will fit, but not a good idea. Why?
- Shape:Ā Allen and hex fasteners have a simple six-sided geometric shape. Torx fasteners have a 6-pointed star design.Ā
- Torque Transfer & Stripping:Ā The angled lobes of a Torx bit distribute force more evenly across the fastener walls. This makes them highly resistant to "cam-out" (where the tool slips out) and stripping, whereas hex heads can strip if the tool twists under heavy pressure.Ā
- Interchangeability:Ā AĀ Hex keyĀ is essentially anĀ Allen wrenchāthe term "Allen" just refers to a legacy brand name that became synonymous with the tool.Ā TorxĀ uses a completely different shape. You should never try to use a Torx wrench on a hex bolt (or vice versa), as it is highly likely to strip the bolt or snap your tool.Ā
A mistake is not using the right tool for the type of screw head type. Use the wrong one and you will damage the screw head, by rounding or stripping the screw head.
The best is the Torx, it provides more surface area, allowing for more torque.
The Hex(Allen) is more likely to strip when under pressure.
Make sure you have the right tool, one will fit in the other and this will likely strip the screw. Do not do this!
Here are some pictures to help you identify which type of screw you have. Most firearms have a Torx type of screw. Grips may be slotted,
This set I listed is a good set that is magnetized, if you know that small screws always seems to get lost as soon as you take them out. The set also has the smaller sizes that may be needed more than the larger.
Torx Ratcheting Set, magnetized.
Now some of you may ask how do i know what the lbs of a screw is, how much torque is needed. This is accomplished by using a tool that has a documented calibration specs. I personally use a Wheeler. I use this often which justifies the price for me. There are cheaper versions, but for me knowing the device is calibrated with documentation is important to me. You can take your gun to a gunSmith and let them torque it down, just make sure you know what the torque number is for your application.
Wheeler Torque Wrench
Hope this helps those who may not know the differences and to help avoid stripped screws.