Metallics TP204SFC Screws 6-32 x 1-1/2 FH Star Pin TR MS 18- (100 pcs)

You need a pin-in star (pin-in-Torx) security bit, not a standard Torx. The TP204SFC is a star pin tamper-resistant screw, meaning there is a post in the center of the star recess that blocks a solid Torx driver. A standard Torx bit will not seat.

That is what they are for. The TP204SFC is a 6-32 machine screw, which is the standard thread for electrical device and wall plate mounting, and the pin-in-star head means it cannot be backed out with common drivers found on a keyring or in a pocket multi-tool. At 1-1/2 inches it is longer than a typical plate screw, so it suits deep boxes, mud rings, or stacked plate and spacer assemblies rather than a flush plate on a standard box.

Yes. It is a flat head (FH) screw, so it is made to seat flush in an 82 degree countersunk hole or a countersunk cover plate. If your plate or enclosure has a raised or straight-wall hole, an oval or pan head is the better pick.

For a flush plate on a standard device, yes, it usually is. Most device and plate screws run well under an inch. The TP204SFC's 1-1/2 inch length is intended where you have to reach through added depth, such as a thick plate, a spacer, a deep mud ring, or a device set back in the box. If your device sits flush, specify a shorter 6-32 tamper-resistant screw instead.

100 pieces per pack, ordered under part number TP204SFC. That quantity suits a facility standardizing on one tamper-resistant fastener across a run of devices, so the same security bit covers every plate on the job.