Metallics JG8HC766 Bolts 7/16-14 x 3-1/2 G8 HXBT St-zn (Jar 25)

Yes, the JG8HC766 is a Grade 8 hex bolt. Grade 8 is a heat treated medium carbon alloy fastener, the higher strength option above Grade 5, and it is what gets specified for structural brackets, strut supports and equipment anchoring where a Grade 2 or Grade 5 bolt is not rated for the load.

The JG8HC766 ships as bolts only, with no nuts or washers included. Match it with a 7/16-14 Grade 8 (or Grade C) hex nut and 7/16 hardened washers. Using a lower grade nut on a Grade 8 bolt limits the joint to the nut's strength, which defeats the reason for specifying Grade 8 in the first place.

Steel with a zinc plating, not stainless. The zinc finish gives light corrosion resistance for dry interior and protected work; for direct weather exposure or wet locations, a hot dip galvanized or stainless fastener is the better call. Note that Grade 8 is only produced in plated steel, so there is no stainless equivalent at the same strength grade.

25 bolts, supplied in a jar rather than loose or boxed. The jar packaging is what electrical and MRO stockrooms use for shop and van inventory, since it keeps the count visible and the bolts separated from other sizes on the shelf.

Yes, that is the intended use. Metallics catalogs the JG8HC766 as an electrical trade fastener, and a 7/16-14 x 3-1/2 Grade 8 hex bolt is a common choice for strut channel hardware, transformer and panel mounting brackets, and heavier conduit support assemblies where a Grade 5 bolt is under-rated.

A 7/16-14 hex head bolt takes a 5/8 inch wrench or socket across the flats. That is the head size, not the thread diameter, which is a common mix-up when ordering tooling for a job.