Metallics TP226SBC Screws 8-32 x 3/8 Btn Star Pin TR MS 18-8 (100 pcs)

Yes. The TP226SBC uses a star (Torx style) recess with a pin in the center, so a standard Torx bit will not seat. You need a pin-in-star driver of the matching size, which has a hole bored down the middle to clear the post. That is the whole point of the head: once it is installed, anyone without the pinned bit cannot back it out. Order the drivers at the same time as the screws if your crew does not already carry them.

18-8 is the common 300 series austenitic stainless (roughly 18 percent chromium, 8 percent nickel) and it is the usual choice for wet locations, exterior enclosures, and washdown areas because it resists general atmospheric corrosion and will not rust-stain a cover plate. It is not the grade for constant salt spray or chlorinated immersion, where 316 is the step up. For a damp basement, a rooftop junction box, or a parking garage device cover, the TP226SBC's 18-8 material is the right call.

Anywhere the public can reach a cover, a standard slotted or Phillips screw can be opened with a coin or a pocket multi-tool. Pin-in-star screws like the TP226SBC stop that, which is why they get specified for wall plates, blank covers, and enclosure doors in schools, correctional work, transit stations, restrooms, and multi-family common areas. Maintenance still gets in with the pinned bit, so you keep access without leaving it open to everyone. The button head also sits low and rounded, so there is no sharp corner on an exposed plate.

Each box of TP226SBC is 100 pieces, which is the practical quantity for an MRO shelf or a punch list run of cover plates. If you are standardizing a whole facility on tamper-resistant device screws, count two per single-gang plate when you work out how many boxes to carry.