B-Line B374SS6

The B374SS6 is a Type 316 stainless steel fitting, which is the grade specified for coastal, wastewater, and chemically aggressive locations where plain or electro-galvanized fittings pit. If your strut run is outdoors, in a wash-down area, or near salt air, this is the material you want. Indoors in a dry mechanical room, a plain steel fitting would do the same structural job.

The B374SS6 is the corner angle fitting only. Strut fasteners, channel nuts, and bolts are ordered separately, and in a 316 stainless application you should match the hardware to the fitting rather than mixing in plated steel bolts, which corrode first and can seize in the joint.

It ties two pieces of strut channel together at a 90 degree corner, with three bolt holes splitting across the two legs so the joint carries load in both directions instead of relying on a single fastener. Typical uses are bracing a trapeze hanger, turning a conduit rack at a wall, or squaring up a equipment support frame. If you only need to join two straight lengths in line, a splice plate is the right part instead.

Order it as B-Line B374SS6. The SS6 suffix is the Type 316 stainless version of the B374 corner angle, so if a submittal just says B374 you are looking at a different finish and should confirm which the drawing calls for.

The part is steel, finished in Type 316 stainless. For a buyer standardizing corrosion-resistant supports across a facility, the thing to confirm on your spec is that the grade called out is 316 rather than 304, since 316 is what handles chlorides.