Metallics JSBH48 Bolts 3/8-16 X 7/8 Hxbt SS (Jar 100)

It's 18-8 austenitic stainless steel, which is the grade used where you need general atmospheric corrosion resistance, including chemical and food-processing equipment. That covers outdoor runs, damp mechanical rooms, and washdown areas. Aggressive chemical exposure (strong chlorides, marine splash) is where 18-8 stops being enough and 316 stainless is the call instead.

No. The JSBH48 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If you are on a federally funded project with domestic sourcing requirements, this bolt will not satisfy them and you need a domestic-certified hex bolt instead.

Head width across the flats measures 0.551 to 0.562 inch, so a 9/16 inch wrench or socket is the right fit. Head height is 15/64 inch, which matters if you're working in a tight channel or under a clamp where head clearance is limited.

Tensile strength is rated 100,000 to 150,000 psi minimum with a 65,000 psi minimum yield, and hardness runs Rockwell B95 to C32. That puts it in the range of a general-purpose structural fastener for electrical and mechanical support work, but it is not a graded high-strength bolt. If a drawing calls out a specific bolt grade for a structural connection, match the grade the engineer specified.

These ship in a jar of 100 bolts, and the jar is the order minimum, so one unit is 100 pieces. That's the format MRO stockrooms and service vans usually want for a fast-moving size like 3/8-16, since the jar keeps the count contained on a shelf rather than loose in a bin.

The intended field application is the electrical, plumbing, heating and air conditioning industries. In practice that's strut and channel assembly, hanger and clamp hardware, equipment mounting, and panel or enclosure bolting where a corrosion-resistant fastener is wanted over plated steel.