B-Line B119SS4 Eaton series strut fittings and accessories, 2.06" Height, 3.5" Length, 1.62" Width, .71lbs, Steel, Four hole double corner wing fitting, 90 deg, Thickness 1/4 in, Stainless steel type 304

The B119SS4 is a four hole double corner wing fitting for 90 degree connections in a strut framing run. It ties two channel members together at a right angle, with two bolt holes on each wing so the joint is fixed in both planes rather than pivoting. Use it where a vertical strut meets a horizontal strut and the corner has to carry load without racking.

It is Type 304 stainless steel, so it suits exterior runs, damp mechanical rooms, food handling and other wash-down environments where plated or painted steel would rust at the bolt holes. Pair it with 304 stainless strut and stainless hardware; mixing in plain steel bolts reintroduces the corrosion point you bought the stainless fitting to avoid.

The B119SS4 is sold as the fitting alone. A four hole corner takes four bolt and channel nut sets to land both wings, so add those to the order along with the strut itself. In a stainless run, specify stainless channel nuts and bolts to match the 304 fitting.

Quarter inch (1/4 in) material. That is the heavy end of the strut fitting range, which is what lets a four hole corner bracket resist bending at the knee instead of deflecting under a cantilevered load. It also means the fitting adds 1/4 inch of stack at each face, so allow for that when you are setting clearances between the strut face and a pipe, tray or panel.

A flat angle plate bolts to one face of each strut and works for light framing. The double corner wing style wraps the corner with a wing on each member and four bolts total, which spreads the load and keeps the joint square under vibration or eccentric weight. For pipe racks, equipment stands and anything cantilevered, the four hole corner is the one to specify.

Order Eaton B-Line part number B119SS4. The SS4 suffix is the Type 304 stainless version of the fitting, so confirm the suffix when cross referencing against a plain or electro-galvanized B119 on a drawing.