Metallics TP516SBC Screws 14 x 1 Btn Hx Pin TR SMS 18-8 (100 pcs)

The TP516SBC is a #14 x 1 inch sheet metal screw with a button head. It is a self-tapping SMS thread, so it drives into sheet metal, enclosure flanges, and strut without a nut on the back side.

It takes a pin-in-hex (hex pin) tamper-resistant bit, not a plain hex key. The center pin in the recess blocks a standard Allen wrench, so you need the matching pin hex security bit to install or remove these.

They are 18-8 stainless steel, which is the 300-series austenitic grade commonly used for corrosion resistance in damp and exterior locations. That makes them a reasonable choice for outdoor enclosures, pool and locker room areas, and washdown spaces where a plated carbon steel screw would rust.

One pack is 100 pieces of the #14 x 1 inch button hex pin stainless screw, so it covers a full run of covers or plates rather than a single device.

The point is deterrence in public or shared space. A #14 x 1 inch SMS with a pin hex head cannot be backed out with the hex keys or screwdrivers someone is likely to be carrying, so it suits exposed panel covers, trim plates, and enclosure doors in schools, transit areas, multi-family common areas, and detention-adjacent spaces. For back-of-house work where only staff have access, a plain hex or Phillips SMS is faster to service.

A 1 inch shank gives you plenty of thread engagement for sheet metal and light gauge strut, but it will protrude behind thin material. On a cover that sits over wiring or a flush surface, confirm you have the clearance behind the hole, or the point will stick through. Button head means it sits low and rounded on the face rather than countersinking, so no tapered hole prep is needed.

Order by Metallics part number TP516SBC. That is the #14 x 1 inch button hex pin tamper-resistant sheet metal screw in 18-8 stainless, 100 per pack.