Metallics JSS3214SS Screw 10-32 x 1/4 SKT S-Scr Cup 18-8 (Jar 100)

The screw is 18-8 stainless steel, the common austenitic grade (roughly 18 percent chromium, 8 percent nickel) used for general corrosion resistance. That makes it suitable for damp interior work, wet locations, and most exterior use where plated carbon steel would rust. It is not the choice for chloride-heavy marine exposure, where a 316 stainless fastener is the better call.

Cup point is a hollowed, ring-edged tip that bites into the mating surface and resists loosening under vibration. It's the general purpose choice for clamping a collar, pulley, or conductor against a shaft or bus and it does leave a mark. If you need to seat into a pre-drilled or spotted hole, a cone point is the right style; if the part has to be repositioned without marring the surface, use a flat or nylon-tipped screw instead.

Order Metallics part number JSS3214SS. That number covers the 10-32 x 1/4 inch socket set screw, cup point, 18-8 stainless, in the 100 count jar.

It's a socket set screw, so it drives with a hex key (Allen wrench) in the internal socket, not a screwdriver. There is no external head, so the screw seats flush or below the surface of the part you are threading it into.

They're packed 100 to a jar, which is how Metallics ships this size for bench and truck stock. The jar keeps a loose count of small set screws together rather than on a card or in a bag, so it's practical for a shop drawer or a service van bin.