Metallics JSHTB38D Bolts 1/2-13 x 1-3/8 Hx Tap Blt SS (Jar 50)

It's a 1/2-13 bolt, meaning a 1/2 inch nominal diameter with 13 threads per inch, which is the standard UNC coarse pitch for that diameter. Thread form is produced to IFI-199 (2014), so it mates with any standard 1/2-13 nut, tapped hole, or threaded channel insert. Length is 1-3/8 inches.

The JSHTB38D is 18-8 stainless steel, the standard austenitic grade used for exterior and damp-location fastening. It resists rust in rain, condensation, and washdown areas, which is why it gets specified for outdoor strut runs, rooftop equipment, and pump room anchoring instead of plain steel.

Rated at 95,000 psi minimum tensile and 60,000 psi minimum yield, with hardness from Rockwell B95 to C32. That puts it in the range of an SAE Grade 5 steel bolt for tensile, so it handles general structural and equipment mounting work. If your drawing calls out Grade 8 or ASTM A325 strength values, stainless 18-8 will not meet them and you need an alloy steel bolt instead.

Yes. Country of origin is the United States, and the bolts are flagged compliant for both Buy American and ARRA requirements, so they can go on federal, state, and transit-funded projects that carry domestic-content language.

Head width across flats measures 0.725 to 0.750 inch, so a 3/4 inch wrench or socket fits. Head type is a standard hex, no washer face flange and no drive recess.

The JSHTB38D ships as a jar of 50 bolts, and 50 pieces is the order minimum, so it is sold by the jar rather than loose by the piece. The jar packaging is the reason this one works well on a service truck or a shop shelf for MRO stock. Other sizes and quantities in the HTB, JHTB, and JSHTB series can be requested.