Metallics TP102SBC Screws 6-32 x 1 Btn Hx Pin TR MS 18-8 (100 pcs)

It takes a pin-in-hex (hex pin) driver, not a plain Allen key. The socket has a pin standing in the center, so a standard hex bit will not seat. You need the matching pin-in-hex bit for a 6-32 screw. That is the whole point of the fastener: no one with a common bit set can back it out.

It is 18-8 stainless steel, the common 300-series austenitic grade used for general corrosion resistance. That makes it suitable for damp and exterior enclosures, covers, and fixtures where a plated steel screw would rust. For salt spray or coastal exposure, 316 is the grade buyers normally step up to.

A tamper-resistant pin-in-hex screw like the TP102SBC is used where you want to keep the public out of a device, cover, or enclosure, in transit shelters, schools, restrooms, detention areas, and exposed electrical boxes. Mechanically it is still just a 6-32 x 1 machine screw, so it drops into the same tapped hole as the original. The only difference is the drive. If access control is not a concern, a standard slotted or Phillips 6-32 machine screw does the same holding job and costs less to service.

At 1 inch it is longer than most cover-plate screws, so on thin sheet metal into a shallow tapped boss the screw will bottom out or protrude behind the hole. The 1 inch length suits stacked material, spacers, gasketed covers, or blind holes deep enough to take the full thread. For a single cover plate on a shallow boss, order a shorter 6-32 in the same pin-in-hex button head style.

The TP102SBC is packed 100 pieces per box, which is the usual quantity a contractor buys for a run of covers or enclosures rather than a single repair. Count the fixings per opening and multiply before ordering.