Metallics TP123SBC Screws 6-32 x 1/4 Btn Hx Pin TR MS 18 (100 pcs)

These are pin-in-hex (tamper resistant) button head screws, so a standard hex key will not seat. You need a security hex bit or key with a hole bored down the center to clear the pin in the middle of the socket. A 6-32 button head of this style takes a small security hex driver, so size your bit set accordingly before the crew is on site.

It is a machine screw with a 6-32 thread, so it needs a pre-tapped hole or a nut. It will not form threads in sheet metal on its own. For a tapped hole, 6-32 is the standard coarse machine screw thread used on device plates, panel covers and enclosure hardware.

The pin in the center of the socket blocks a plain hex key, so a standard tool set will not open the cover. Contractors and facilities crews use them on enclosure covers, device plates and fixture housings in public or tenant areas where they do not want casual access. The button head also sits low and rounded, so there is no sharp screw head projecting from the plate. If tamper resistance is not a requirement, a plain 6-32 machine screw does the same clamping job for less trouble on the tool side.

They ship 100 pieces to a pack, all one part number, TP123SBC. That quantity suits a panel shop or an MRO crib standardizing on one security screw across a facility rather than a single-device repair.