Metallics JSBH336 Bolts 1/2-13 x 1-1/4 HXBT SS (Jar 100)

The JSBH336 is a 1/2-13 x 1-1/4 inch hex bolt, so it is 1/2 inch diameter with 13 threads per inch, the standard UNC coarse pitch for 1/2 inch. Any standard 1/2-13 nut or tapped 1/2-13 hole will accept it. Measured shank diameter runs 0.4930 to 0.5000 inch.

The JSBH336 is 316 stainless steel. Its molybdenum content gives greater corrosion resistance than 18-8 plus better strength at elevated temperature, which is why it gets specified for marine, coastal, wash-down, and chemically aggressive locations. For dry interior strut and panel work 18-8 is normally adequate; pay for 316 where chlorides or heat are in play.

No. These hex bolts are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. On a federally funded project with domestic material requirements you will need a domestically sourced fastener.

These ship in a jar of 100 bolts, and the jar is the order minimum, so 100 pieces is the smallest quantity. Metallics lists the SBHC and JSBHC series in other sizes and quantities by request.

Tensile strength is listed at 100,000 to 150,000 psi minimum with 65,000 psi minimum yield, and hardness runs Rockwell B95 to C32. That is in the range of a standard austenitic stainless cap screw, not a heat-treated SAE Grade 8 alloy bolt, so for high-tension structural connections specify an alloy steel fastener instead.

You can, but keep galvanic corrosion in mind: 316 stainless paired with zinc-coated steel in a wet or coastal location will sacrifice the zinc coating at the contact point. In dry indoor runs it is a non-issue. Where the connection stays wet, use stainless strut and stainless nuts and washers throughout rather than mixing.