Metallics TP606SFC Screws 8 x 1 FH Star Pin TR SMS 18-8 (100 pcs)

The TP606SFC uses a star drive with a center pin, so a standard Torx bit will not seat. You need a pin-in-star (Torx-with-hole) security bit in the matching size for a #8 screw. That pin is the whole point of the fastener: it blocks common T-bits and ordinary screwdrivers, which is why these get used on public-facing cover plates, enclosures and fixtures where you do not want the screw backed out.

It is a sheet metal screw (SMS), #8 x 1 inch. SMS threading runs the full length with a sharper, closer thread for biting into sheet steel, enclosure walls, device covers and metal straps. For framing lumber or a wood substrate you want a wood or deck screw instead, not this one.

They are 18-8 stainless steel, which is the common 300-series austenitic grade used for general corrosion resistance, so exterior covers, damp rooms and washdown areas are reasonable duty. 18-8 is not the grade to pick for direct coastal salt spray or chloride-heavy chemical exposure, where 316 is the usual step up.

That is the application they are built for. The combination of a pin-in-star drive and a flush flat head means no common bit or coin edge will remove them, and the 18-8 stainless body resists rust in corridors, restrooms and exterior locations. Keep a matching pin-in-star bit in the truck, because maintenance cannot open them without one either.

The TP606SFC is a flat head (FH), so it sits flush when driven into a countersunk or chamfered hole. That is what you want on a cover plate, escutcheon or trim where a raised head would catch clothing, hands or a mounted panel. If the hole is not countersunk, a pan or truss head gives a better bearing surface against the sheet.

One hundred pieces per box of the #8 x 1 inch pin-in-star stainless screw. For an MRO stockroom standardizing tamper-resistant hardware across a building, that is a single part number covering a lot of cover plates, so ordering is by box rather than by the piece.