Self Tapping Screw

These pan head screws can be installed on sheet metal using phillips driver.

These pan head screws can be installed on sheet metal using square driver.

These pan head screws can be installed on sheet metal using Flat or Phillips driver.

Compared to Phillips, slotted, and square drives, a Torx drive has more points of contact, so you can exert greater power with less chance of slippage or recess damage. 

In order to disperse holding pressure and lower the possibility of shattering thin metal, they have a broader head than conventional rounded head screws. 

A finished look is provided by a thick, ornamental head. 

These pan head screws can be installed on sheet metal using Flat driver.

These screws, also referred to as pin-in-Torx, let you use more force without causing slippage or recess damage. 

Use a tamper-resistant hex driver to insert and remove these screws, also referred to as pin-in-hex. 

Use a spanner driver that is resistant to tampering to install and remove these screws. 

A conventional slotted driver can be used to install the S-shaped drive, but a specialized tool is needed to remove it. 

Thin metal is less likely to be crushed because to a flange beneath the head that distributes holding pressure. 

For use in countersunk holes, they have a beveled underside. 

An ornamental rounded top gives it a polished look. For use in countersunk holes, they have a beveled underside. 

They all require less driving torque and are less likely to break mating plastic because they have round shanks and more sharply angled threads than those with tri-lobe shanks. Additionally, they have a tight hold thanks to their recessed thread root. 

In fragile materials like glass-filled plastic and phenolic, alternating high and low threads reduces splitting and cracking. 

Compared to thread-forming screws, these screws require less driving torque and put less stress on the material since they cut threads into drilled holes as they are rotated. They have coarse threads that hold soft plastic and are also referred to as Type BT and Type 25 screws.