Metallics JSBH38 Bolts 1/2-13 X 1/2 Hxbt SS (Jar 100)

They are 1/2-13, meaning a 1/2 inch diameter body with 13 threads per inch (UNC coarse thread). The measured body diameter runs 0.4930 to 0.5000 inch, so they take a standard 1/2-13 nut or a tapped 1/2-13 hole. Shank length is 1/2 inch, which makes these short bolts for thin stack-ups, clamped channel, or bolting a lug or strap flat to a plate.

18-8 stainless is the grade used where you want general atmospheric corrosion resistance, which covers outdoor exposure, damp mechanical rooms, and food-processing or chemical equipment. It is an austenitic alloy, so it will not rust the way a plated carbon steel bolt does. Aggressive chemical exposure or chloride-heavy environments (coastal salt spray, pool chemistry) is where you would step up to 316 instead.

Across the flats the hex head measures 0.736 to 0.750 inch, so a 3/4 inch wrench or socket is the fit. Across the corners the bolt measures 0.840 to 0.866 inch, which is what you need to clear if you are driving one down inside a recess or a tight channel.

The JSBH38 is flagged compliant for both Buy American and ARRA purposes. Country of origin is listed as multiple, so if your contract requires documented origin on the specific lot you receive, ask for the cert with the order rather than relying on the catalog flag alone.

Yes. The JSBH38 is one size in the Metallics SBHC and JSBHC hex bolt series, and other diameters, lengths, and pack quantities in the same 18-8 stainless hex bolt line are available by request. If your grip length needs more than 1/2 inch of shank, ask for the longer length in the series rather than stacking washers under this one.

They ship in a jar of 100 pieces, and 100 count is the order minimum. The jar is a practical format for a truck bin or a shop shelf where you are pulling a handful at a time instead of a bulk box. Packed weight of the jar is about 3,270 g.