Metallics JSHC812SS 8-32 x 1/2 in. Socket Head Hex Cap Screws - 18-8 Stainless - Each

Yes. The JSHC812SS is cut 32 threads per inch in UNC, which is the standard 8-32 machine thread, so it mates with any 8-32 tapped hole, nut, or threaded insert. Thread length is the full 1/2 inch of screw, so count your material stack plus washer thickness before ordering, since 1/2 inch leaves little room for a thick clamp-up.

These screws run 80,000 psi minimum tensile and 30,000 psi minimum yield at Rockwell B80 hardness. That is the normal property class for 18-8 stainless fasteners, and it is well below an alloy steel socket cap screw, which is typically heat treated to far higher tensile. For enclosure mounting, strut hardware, panel work, and general electrical assembly, 18-8 is the right call because it resists corrosion. For a genuinely structural, high-tension joint, specify an alloy steel socket cap screw instead.

The JSHC812SS is flagged compliant for both Buy American and ARRA, which is what a government, school district, or transit procurement file needs on a fastener line item. Country of origin is listed as multiple, so if your specification demands a single documented origin per lot, confirm the origin on the lot you receive.

It's a socket head with a hex drive, not a slotted or Phillips, so you need an Allen key rather than a screwdriver. The socket itself measures 0.262 to 0.27 inch across the head width with a head height of 0.159 to 0.164 inch, which is standard 8-32 socket cap geometry per ASME B18.3-2012. Bring a metric/SAE hex key set to the job and the small end of an SAE set will seat it.

18-8 stainless is the standard austenitic grade for general corrosion resistance, which is why it gets specified for outdoor enclosures, damp mechanical rooms, and wash-down areas where a plated steel screw would rust and seize. The description also notes these retain their mechanical and performance capability above ambient temperature. For salt spray or coastal exposure, 316 stainless is the step up.

They ship as a jar with a 100-count order minimum, so the smallest purchase is 100 pieces. That is normal for small machine-screw sizes and it works in your favor on a repeat MRO item, since 8-32 x 1/2 is a size you will burn through on panel and enclosure work. Other sizes and quantities are available by request.

That is exactly what the socket head is for. The head is 0.262 to 0.27 inch wide and only 0.159 to 0.164 inch tall, so it sits in a shallow counterbore and needs no wrench swing around the head, just an Allen key straight down the axis. A hex head of the same thread size needs clearance around all six flats for a wrench, which is why cap screws win inside enclosures and against adjacent components.

Dimensions follow ASME B18.3-2012, the standard for socket cap screws, so head and socket geometry interchanges with any other B18.3 8-32 socket cap from another maker. If your drawing calls out B18.3 on the fastener schedule, this satisfies it. Note also that cap screws of a length 3D or greater (3 times the nominal diameter) are subject to tensile, yield, elongation, and reduction of area testing, with elongation at 10% minimum and reduction of area at 33% minimum on machined specimens.