Metallics JG5HCF23 Bolts 3/8-24 x 1-1/2 G5 HXBT St-zn (Jar 100)

Fine thread. The JG5HCF23 is a 3/8-24 hex bolt, 24 threads per inch, which is the UNF fine pitch rather than the 3/8-16 coarse pitch most 3/8 inch hardware uses. It will not thread into a 3/8-16 nut or tapped hole, so match the mating thread before you order. Thread dimensions follow ASME B18.2.1-2012.

It is a medium carbon steel cap screw, heat treated, with a minimum tensile strength of 105,000 psi and hardness of Rockwell C19-30. That is enough for motor mounting, machinery, and automotive or truck repair work. If your drawing calls for Grade 8, this is not a substitute.

It ships as a jar of 100, and 100 count is the order minimum, so partial jars are not sold. The jar weighs 2531 g. Other sizes and quantities are available by request if 3/8-24 x 1-1/2 is not the size you need.

It is flagged compliant for both ARRA and Buy American, which is what public and institutional procurement usually asks for. Country of origin is listed as multiple, so if your contract requires a single named origin, confirm the lot at order.

The shank outside diameter is 0.3690 to 0.3750 inch, so a 3/8 inch clearance hole is tight; drill 13/32 inch for easy pass-through, or 7/16 inch if you need slop for alignment on a motor base.

The finish is zinc with a zinc chromate coating over steel, which handles indoor, sheltered, and light outdoor exposure. For sustained wet, coastal, or chemical exposure, step up to hot dip galvanized or stainless instead.

Yes, that is the intended use for this series. Grade 5 medium carbon steel heat treated to 105,000 psi minimum gives you the clamp load a motor mount needs without the brittleness concerns of higher grades, and the 1-1/2 inch length suits a typical foot-plus-base stack. Pair it with a Grade 5 or better nut and washer so the nut is not the weak link.