B-Line B104SHHDG Eaton series strut fittings and accessories, 4.12" Height, 4.12" Length, 1.62" Width, .78lbs, Steel, Pre-assembled fitting, Three hole adjustable corner angle, 90 deg, Hot-dipped galvanized

The B104SHHDG is hot-dipped galvanized steel, which is the finish specified for outdoor, damp, and corrosive-environment strut runs. That makes it suitable for rooftop mechanical supports, parking structures, exterior conduit racks, and wash-down areas where a plain or electro-galvanized fitting would rust at the cut edges.

It ships as a pre-assembled fitting made of two legs joined at a pivot, so the angle between the strut runs can be set rather than being fixed at a single value. The catalog designation is a three hole adjustable corner angle, 90 deg, so 90 degrees is the nominal setting, with the joint allowing you to swing it to match an out-of-square corner or a sloped run.

The B104SHHDG is supplied as a pre-assembled fitting, meaning the two legs and their pivot fastener come together out of the box. The hardware that attaches it to the strut itself, the channel nuts and hex head bolts, is ordered separately, so add those to the same order in a matching hot-dipped galvanized finish to avoid dissimilar-finish corrosion at the connection.

Order it as B104SHHDG from Eaton's B-Line series. The HDG suffix is the hot-dipped galvanized finish, so if you are matching an existing interior run in a plain or zinc finish, that is a different suffix and a visibly different part.

An adjustable corner angle pivots, so it handles corners that are not truly square, sloped roof or ceiling conditions, and braces set at an odd angle, then locks at the setting you want. A fixed 90 degree angle bracket is the simpler choice when the intersection is genuinely square and you want no chance of the joint shifting. The B104SHHDG is the adjustable type, pre-assembled with three holes, so it gives you two bolt points on one leg and one on the other for the strut connections.