Metallics JSBH5D Bolts 1/4-20 X 5/8 Hxbt SS (Jar 100)

They're 18-8 stainless, an austenitic alloy used where general atmospheric corrosion resistance is needed, including chemical and food-processing equipment. For aggressive chemical exposure or chloride-heavy service, step up to 316 stainless instead, since 18-8 is not rated for those environments.

No. The JSBH5D is flagged as not Buy American compliant and not ARRA compliant, even though country of origin is listed as the United States. If your spec carries a domestic-sourcing clause, don't submit these without getting the clause reconciled first.

The hex head measures 0.428 to 0.438 inch across, which is a 7/16 inch wrench or socket. That's the standard driver size for a 1/4-20 hex cap screw, so no odd tooling needed on the truck.

Tensile strength is 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 same general tensile range as a grade 5 steel bolt but with a lower yield, so for heavily loaded structural connections a plated alloy bolt is the better choice. Where corrosion is the controlling factor, the stainless is the right call.

They ship in a jar of 100 pieces, and 100 count is the order minimum. The jar format is meant for the bench or the van bin rather than bulk boxed quantities. Other sizes and quantities can be arranged by request.

Bolts only. The jar of 100 is hex cap screws, so any 1/4-20 nuts, flat washers, or lock washers for the job are a separate line. Match them in 18-8 stainless so you aren't mixing plated steel hardware against stainless and setting up galvanic corrosion.

That's the common use. A 1/4-20 by 5/8 inch stainless hex bolt is the standard size for enclosure mounting feet, channel nut connections, and ground lug hardware, and the 18-8 material holds up in damp or outdoor locations where plated steel rusts. The 5/8 inch length suits thin sheet and strut, not through-bolting thick material.

Hex head, driven with a wrench or socket, part of the Metallics SBHC and JSBHC hex cap screw series. There's no square shoulder and no drive recess in the top, so it needs a wrench on the head rather than a screwdriver or a hold-against-rotation shoulder.