Metallics JG5HCF13 Bolts 5/16-24 X 1-1/2 G5 Hxbt St-zn (Jar 100)

Fine thread. The JG5HCF13 is a 5/16-24 bolt, 24 threads per inch, which is UNF rather than the more common 5/16-18 UNC. Nuts and tapped holes cut for 5/16-18 will not accept it, so match the mating thread before you order. Thread form follows ASME B18.2.1-2012.

It's a Grade 5 medium carbon steel cap screw, heat treated, with a minimum tensile strength of 105,000 psi and hardness of Rockwell C19-30. Steel is to AISI 1008-1026. That puts it well above a plain Grade 2 fastener for mounting motors and equipment under load.

Both the ARRA Compliant and Buy American Compliant flags on the JG5HCF13 are marked C, so it is carried as compliant for those procurement requirements. Country of origin is listed as multiple, so if your specification demands a single named origin on the submittal, confirm the origin on the lot you receive.

The bolts are steel with a zinc chromate plated finish. That gives ordinary indoor and sheltered corrosion protection, which is why they're standard for motor mounting, machinery, and automotive and truck repair. For sustained wet, coastal, or chemically aggressive exposure, specify hot dip galvanized or stainless instead.

They ship in a jar of 100 pieces, and 100 count is the order minimum. Total packed weight is 1783 g. The jar format suits a service van or shop bin where you're pulling a handful at a time rather than a full box. Other sizes and quantities are available by request.

It's a heat-treated medium carbon steel cap screw used to mount motors to machinery, and it's a common repair fastener in automotive and truck work. The fine 24 TPI thread holds better against vibration and gives finer torque control than a coarse thread, which is why equipment manufacturers spec it on motor feet and bracketry. At 1-1/2 inch length, leave enough grip for the clamped stack plus nut engagement.