Metallics JSPM13SS 8-32 x 1/2 in. Pan Head Slotted Machine Screws - 18-8 Stainless - Each

Yes. The JSPM13SS is an 8-32 UNC machine screw with 32 threads per inch, which is the standard device and box mounting thread used on receptacles, switches, and plaster ears. At 1/2 inch long it engages a tapped hole without bottoming out the way a longer screw can.

The pan head measures 0.306 to 0.322 inch across and 0.085 to 0.096 inch high. That low profile clears most cover plates and flat brackets, but it is a raised head, not flush, so it will not sit down in a countersunk hole. Use a flat head screw if you need a flush surface.

They are made to ASME B18.6.3-2010, the dimensional standard for inch-series slotted and recessed head machine screws, with SAE material standard. Any other 8-32 x 1/2 pan head screw built to that same standard will drop into the same tapped holes and present the same head footprint.

They are 18-8 stainless, the common 300-series austenitic grade used where plated steel would rust. That makes them a reasonable choice for wet locations, exterior enclosures, and coastal or washdown areas where a zinc-plated screw would streak or seize.

Slotted drive, not Phillips. The slot runs 0.045 to 0.054 inch wide and 0.045 to 0.058 inch deep, so a flat blade tip sized to that slot seats properly. A #2 driver size is specified for this screw.

It ships in a jar, with a minimum order of 100 count. That jar weighs 0.44 lbs, so it is a shop or truck-stock quantity rather than a single fastener.

Tensile strength is listed at 80,000 psi minimum with a Rockwell BBS-B9S hardness, which suits device mounting, enclosure assembly, and bracket work. Stainless machine screw strength values are approximations, since there is no single performance standard for stainless machine screws, so do not spec them against a graded steel bolt requirement on a structural joint.

Both Buy American and ARRA compliance are flagged as compliant for the JSPM13SS, which matters on federally funded work. Country of origin is listed as multiple, so if your submittal requires a single named origin, confirm that against the shipped lot.

Yes, and 18-8 stainless is the usual pick there because it will not rust-stain the aluminum the way a plated steel screw does once the plating wears. Stainless and aluminum do sit apart on the galvanic scale, so in constantly wet exterior service an anti-seize or sealing washer is worth adding.