Metallics JG8HC76112 Bolts 7/16-14 x 1-1/2 G8 HXBT St-zn (Jar 25)

Yes, it's 7/16-14, meaning 14 threads per inch, which is the coarse (UNC) pitch for 7/16 diameter. Shank outside diameter runs 0.4305 to 0.4375 in. It will thread into any 7/16-14 tapped hole or nut; a 7/16-20 fine thread nut will not run on it.

This is a Grade 8 cap screw with 150,000 psi minimum tensile and 130,000 psi minimum yield, hardness Rockwell C33-39. Grade 5 tops out well below that, which is why Grade 8 gets specified in automotive and fleet work where the joint load exceeds what Grade 5 can carry. The tradeoff is ductility: Grade 8 is harder and less forgiving of shock and bending, so for structural steel connections use the proper structural bolt instead.

No. The JG8HC76112 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. For federally funded work carrying domestic sourcing requirements you will need a domestically produced fastener instead.

The hex head measures 0.612 to 0.625 in across the flats, so a 5/8 in socket or wrench is the fit. Head height is 19/64 in., which matters if you are working in a shallow counterbore or tight overhead space.

The bolt is medium carbon steel with a zinc finish, which handles indoor and sheltered conditions and incidental moisture. Zinc plating is a sacrificial coating, not a corrosion-proof one, so for sustained outdoor exposure, washdown areas, or coastal air you want hot dip galvanized or stainless. Note also that stainless is not available in Grade 8 strength, so a corrosive high-load joint is a real tradeoff.

These ship 25 bolts to a jar. The order minimum is 50 each, so plan on two jars as the smallest buy. The jar pack is what makes this practical for a service truck or an MRO crib, as opposed to loose bulk.

No. The jar contains the hex cap screws only, 25 of them. You will need to order matching 7/16-14 nuts separately, and for a Grade 8 joint pair them with a Grade 8 or hardened nut and hardened flat washers so the nut is not the weak link and the washer does not dish under clamp load.

Metallics lists field application as the electrical, plumbing, heating and air conditioning industries, and the Grade 8 strength class also sees heavy use in automotive and fleet repair. Typical jobs are anchoring equipment feet, mounting rooftop units, hanging heavy trapeze or strut assemblies, and any bolted joint where the load would overwork a Grade 5.

The material standard is AISI 1021 to 1045, a medium carbon steel, and the bolt is heat treated to reach Grade 8 properties. Measured hardness is Rockwell C33-39. Do not weld, torch cut, or re-heat these bolts; heating past the temper destroys the heat treatment and the 150,000 psi tensile rating goes with it.