Metallics JSNM8SS Nuts M8 x Hx Nut SS (Jar 100)

Yes. The JSNM8SS is an M8 metric hex nut, so it mates with M8 bolts, screws, and M8 threaded rod. It will not fit imperial sizes like 5/16-18 or 3/8-16, even though 5/16 is dimensionally close to M8. If your rod or anchor is imperial, order an inch-series nut instead.

They are 18-8 stainless steel, the austenitic grade commonly used for general outdoor and wet-interior work such as damp mechanical rooms, strut and channel assemblies, and exposed conduit supports. For salt spray or coastal exposure, 316 stainless is the better choice.

The JSNM8SS carries material standard Class A2.70, the stainless property class used for A2 (18-8) nuts. Match it with A2-70 stainless bolts or rod so the nut and fastener are in the same strength class. If a drawing calls out a steel grade like Class 8 or Grade 5, a stainless A2-70 nut is not a drop-in substitute.

You can, but it is not good practice on anything exposed to moisture. Pairing 18-8 stainless against zinc-plated steel sets up galvanic action that eats the zinc coating first, and you lose the corrosion protection you paid for. Keep the stainless nut with stainless bolts or rod for outdoor and wet locations; in a dry interior the mismatch is less of an issue.

Each jar holds 100 nuts, and 100 count is the order minimum. The jar packaging keeps them together on a service truck or in a shop bin rather than loose in a bag. Total weight is 1.1 lbs per jar.

The JSNM8SS is flagged compliant for both Buy American and ARRA in the product record, with country of origin listed as China. On federally funded work, verify which clause your contract actually invokes, since Buy American Act compliance and Build America Buy America domestic content rules are not the same test.

Yes. Beyond the 100-count jar of M8 stainless, other sizes and quantities in the Metallics JSNM hex metric nut series are available by request, so you are not locked into the single jar size if a job needs a larger run or a different metric thread.