Metallics TP203SBC Screws 6-32 x 1-1/4 Btn Star Pin TR MS 18 (100 pcs)

They are 6-32 x 1-1/4 inch machine screws. The 6-32 thread means a #6 diameter with 32 threads per inch, so they thread into a tapped #6-32 hole or a matching nut, not into raw wood or drywall. The 1-1/4 inch length is measured on the shank below the button head.

A pin-in Torx (star) security bit. The TP203SBC has a star recess with a pin in the center, so a standard Torx bit will not seat, it bottoms out on the pin. You need the tamper-resistant version of the bit with a hole bored down the middle. Order the bits at the same time if your crew does not already carry a security bit set.

Deterrence. The pin-in-star drive stops anyone with a common screwdriver or a standard bit from opening the cover, so it is the fastener used on device plates, enclosures, panel covers and fixtures in public corridors, schools, transit areas, detention and multi-family common space. Mechanically it does the same job as any 6-32 machine screw of the same length, the difference is entirely in who can back it out.

No. The TP203SBC has a button head, which is a low domed head that seats on top of the surface, so it will not pull down flush into an 82 degree countersink. If the cover or plate is countersunk, you need a flat head screw instead. For a plain drilled clearance hole in a device plate or enclosure cover, the button head is the correct profile.

100 pieces per box, sold under part number TP203SBC. That quantity is aimed at a fixture or device-plate changeout across a floor or a building rather than a single repair, and standardizing the whole run on one tamper-resistant head means one security bit covers the facility.