Metallics JBHC57 Bolts 5/16-18 x 2-3/4 HXBT St-zn (Jar 100)

The JBHC57 ships as a jar of 100 bolts, and 100 count is the order minimum, so it is sold by the full jar rather than loose by the piece. The jar pack is the reason for the JBHC prefix in the BHC and JBHC series. Other sizes and quantities are available by request.

Yes. The JBHC57 hex bolt is flagged both Buy American compliant and ARRA compliant, which is what a government, school, or municipal procurement file usually needs on a fastener line item. Country of origin is listed as multiple, so if your spec requires a single named origin on the submittal, confirm the origin on the lot you receive.

These are steel bolts with a zinc finish. Zinc plating handles indoor and protected-exterior use and resists general corrosion in dry or occasionally damp conditions, but it is a plated coating rather than hot-dip galvanizing or stainless, so for constant wet exposure, coastal air, or direct ground contact you want a hot-dip galvanized or stainless fastener instead.

A standard 5/16 inch hex bolt head takes a 1/2 inch wrench or socket. The JBHC57 has a hex head, so it drives with an open-end, box, or impact socket rather than a screwdriver or driver bit, which is why these are the usual pick for hanger and channel work where you need real torque.

A full jar of 100 of the 5/16-18 x 2-3/4 bolts weighs 6.1 lbs. Handy to know if you are loading several sizes onto a service truck or figuring freight on a bulk MRO order.

It is catalogued by Metallics within electrical supplies because that is where hex bolts get consumed most, on strut, hangers, trapeze supports, and enclosure mounting. Mechanically it is a plain zinc plated steel hex bolt to ASME B18.2.1-1996, so it works anywhere a 5/16-18 x 2-3/4 bolt is called for, including plumbing hangers, light structural bracketing, and general building maintenance.