Metallics JBSC103234 10-32 x 3/4 in. Socket Button Head Hex Cap Screws - Alloy Steel Black - Each

It takes a hex (Allen) key, not a screwdriver. The head measures 0.347 to 0.361 in. across and 0.091 to 0.101 in. high, with a 0.07 in. socket depth, so a short-arm hex key seats fully even in a tight counterbore. Keep the key square in the socket, since a shallow socket like this one is the first thing to strip if you drive it on an angle.

They are supplied plain, in a black alloy steel finish with no protective plating. That makes them an indoor or dry-location fastener. For exterior enclosures, wet locations, or anywhere subject to washdown, use a zinc-plated or stainless cap screw instead, because a plain alloy screw will start showing rust.

These ship as a jar of 100 pieces, with 100 count as the order minimum. There is no loose or by-the-piece option. Metallics does note that other sizes and quantities are available by request if your job needs a different length or pack.

It is flagged Buy American compliant and ARRA compliant in the Metallics data, with country of origin China. On federally funded work, those two flags are what your submittal reviewer will look at, so carry the compliance designation through on the paperwork rather than the origin alone.

Button head is the low-profile choice. Head height on the JBSC103234 runs 0.091 to 0.101 in. with a 0.347 to 0.361 in. diameter, so it sits nearly flush and spans a wider bearing area, which suits sheet metal covers, panel faces, and anywhere a tall head would catch a hand or a conduit run. A standard socket head cap screw has a deeper socket and a taller head, which gives more wrench purchase and better torque capacity, so pick that when the joint needs to be pulled up hard. These button heads are not rated for critical, high-strength applications.

Head and body dimensions are built to ASME B18.3-2012, with threads to ANSI/ASME B1.1. That means the head will drop into a counterbore machined to standard 10-32 button head dimensions, and the screw interchanges with any other B18.3 button head of the same size on your drawing.

The jar comes in at 0.69 lbs, in a container measuring 3 in. length by 3 in. width by 2.7 in. height. Light and small enough to keep several sizes on a van shelf or in a service cart drawer.