Metallics JSPM17SS 10-24 x 3/4 in. Pan Head Slotted Machine Screws - 18-8 Stainless - Each

Yes. These screws are made from 18-8 stainless, which is the usual choice for wet, damp, and corrosive locations where a zinc-plated steel screw would rust. That makes them appropriate for exterior fixture mounting, wet-location boxes, coastal work, and food-service or wash-down areas.

The JSPM17SS is flagged both Buy American compliant and ARRA compliant, which is what a government, school district, or institutional procurement office needs for a funded job.

They ship in a jar of 100, which is also the order minimum (100 count). There is no smaller break pack, so a single screw is not an orderable quantity.

The pan head measures 0.357 to 0.373 in. across and 0.099 to 0.11 in. high, so it sits roughly a tenth of an inch proud of the surface. That low profile clears most cover plates and fixture canopies, but if you need a flush surface you want a flat head countersunk screw instead.

They are made to ASME B18.6.3-2010, the standard covering inch-series machine screw head and thread dimensions, with material called out to SAE. If your spec sheet calls for a B18.6.3 pan head, this meets it.

Minimum tensile strength on these is 80,000 psi, with hardness in the Rockwell B range. That is adequate for device, fixture, and strap mounting, but stainless is softer than a hardened grade 5 or grade 8 steel fastener, so for structural or high-torque load paths use a plated alloy screw and give up the corrosion resistance. Metallics also notes that tensile values for stainless screws are approximations, since there is no single performance standard for them.

Metallics builds the SPM machine screw series in other diameters, lengths, and pack quantities, and those are available by request. The JSPM17SS itself is fixed at 10-24 x 3/4 in. in a 100 count jar.