Metallics TP130SFC Screws 10-32 x 1 FH Hx Pin TR MS 18-8 (100 pcs)

It takes a hex pin driver, not a plain hex key. The head is a hex socket with a pin in the center, so a standard Allen wrench won't seat. You need the matching pin-in-hex bit sized to the recess.

Yes. The TP130SFC has a flat head, which is designed to seat into an 82-degree countersink and finish flush with the surface, so it won't catch on a cover plate or trim. If your hole is not countersunk, the head will stand proud and you'd want a pan or truss head instead.

They're 18-8 stainless steel, the common 300-series austenitic grade used for general corrosion resistance. That makes them suitable for exterior and damp installs where plated carbon steel would rust. For chloride-heavy or coastal exposure, 316 is the step up.

A pin-in-hex head can't be backed out with a screwdriver or a common hex key, so it discourages casual removal of covers, plates, and enclosure doors in corridors, restrooms, transit areas, and school or detention spaces. Facilities buyers standardizing on one tamper head keep a single driver on the cart instead of a bit set. The TP130SFC covers that in a 10-32 x 1 inch flat head.

Yes, 10-32 is the thread used for grounding screws and device-box mounting holes in North American electrical work, so the TP130SFC threads into standard 10-32 tapped box and strap holes. The 1 inch length gives you reach through a thicker cover or spacer; for a flush plate on a bare box it will usually be longer than needed.

Each box holds 100 pieces of the 10-32 x 1 inch stainless tamper-resistant screw. That's a practical count for a multi-unit or facility-wide cover plate swap where you want one driver and one fastener for every opening.