Metallics TP201SBC Screws 6-32 x 3/4 Btn Star Pin TR MS 18-8 (100 pcs)

They are 6-32 x 3/4 inch machine screws, so a unified #6 diameter with 32 threads per inch and a 3/4 inch length. Machine screw thread means they go into a tapped hole or a nut, not raw wood.

These are tamper resistant pin-in-star (pin-in-Torx) drive screws, so a standard Torx bit will not seat. You need a pin-in-star security bit of the matching size, which has a hole bored down the center to clear the pin in the recess.

They are 18-8 stainless steel, the austenitic 300 series grade used for general corrosion resistance. That handles damp and outdoor exposure well; for salt spray or coastal work, 316 stainless is the step up.

The pin in the drive recess blocks a standard Torx or Phillips bit, so a passerby with a pocket screwdriver cannot open the plate. That is the reason to spec the TP201SBC on public-area device plates, panels, and enclosures where ordinary fasteners get removed. If the fastener is inside a locked room, a plain 6-32 machine screw does the same mechanical job for less work at install.

At 3/4 inch, these are longer than the short screws that ship with most wall plates, which suits thicker plates, spacers, stacked gaskets, or screwing through an extension ring into a tapped strap. On a thin plate straight to a device yoke you may bottom out or run out of tapped thread, so measure your stack before ordering.

Each pack is 100 pieces of the 6-32 x 3/4 button head pin-in-star screw, all one size, so plan quantity per opening or per device accordingly.

Button head sits proud of the surface with a low domed profile rather than sinking flush, so no countersink is needed in the plate. If your plate or cover is counterbored for a flat head, a button head will not sit flush in it.