Metallics JG8HC768 Bolts 7/16 X 3/4 G8 Hxbt Y-Zn (Jar 100)

Yes. The JG8HC768 is a 7/16 inch diameter hex cap screw with 14 threads per inch, which is the UNC coarse pitch for 7/16. Measured shank diameter runs 0.4305 to 0.4375 inch, so it mates with a standard 7/16-14 nut or tapped hole.

Strength. This Grade 8 cap screw is rated 150,000 psi minimum tensile and 130,000 psi minimum yield, with a hardness of Rockwell C33-39, which is above what a Grade 5 will hold. It is medium carbon steel, heat treated, and the usual choice in automotive and fleet work where the joint load exceeds Grade 5 capacity. For light-duty or non-structural assembly, a Grade 5 is the normal spec.

No. This Grade 8 hex cap screw is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your contract carries domestic sourcing requirements, you need a documented domestic fastener instead.

Across the flats the hex head measures 0.612 to 0.625 inch, so a 5/8 inch socket or wrench is the fit. Head height is 19/64 inch, which matters if you are working in a shallow counterbore or under a bracket.

It ships as a jar of 100, and 100 count is the order minimum, so the jar is the smallest unit. Metallics does offer other sizes and quantities in this G8HC and JG8HC family on request.

The finish is zinc over steel, which gives sacrificial corrosion protection for general indoor and sheltered outdoor use. It is not stainless. In standing water, road salt, or a washdown environment expect the coating to be consumed over time, so for continuously wet service look at a stainless or hot-dip galvanized fastener instead.

Material standard is AISI 1021 through 1045, a medium carbon steel, heat treated to reach Grade 8 properties at Rockwell C33-39. Note that heat treated Grade 8 should not be re-heated or welded, since that destroys the temper and the strength rating goes with it.