B-Line Eaton series strut pipe clamps and accessories, .059" height, 2.117" length, 1.25" width, 400 lbs, Steel, Safety factor of 5, Include combinati

The B2026SS4 is a type 304 stainless steel O.D. pipe conduit clamp, which is what you want for wet, washdown, or corrosive areas where a plain electro-galvanized clamp would rust out. The spec table also carries a general steel material designation for the family, so if your job specifies 304 stainless for all strut hardware, order by the B2026SS4 part number rather than the base catalog number.

It uses 1/4-20 hardware. That is the smaller of the common strut clamp bolt sizes, so if your existing clamps are running 3/8-16 strut nuts and bolts you will need matching 1/4-20 strut nuts, not the ones already in the channel. Order the strut nut and bolt separately unless you already have 1/4-20 hardware on hand.

It is an O.D. pipe conduit clamp, so it is sized to the measured outside diameter of the tube, not to a nominal pipe size. Measure the actual O.D. of your copper, tubing, or conduit with calipers before matching a clamp. Mixing up O.D. and nominal sizing is the usual reason a clamp arrives and will not close on the run.

The combination recess lets one clamp seat either of two adjacent pipe or conduit outside diameters instead of being cut for a single O.D. Practically, that means fewer part numbers to stock on a job where you are hanging mixed sizes, and a spare clamp in the truck that fits more than one run.

You can, but be deliberate about it. A 304 stainless clamp bolted to galvanized strut in a wet location sets up dissimilar metal contact, and the zinc coating is the sacrificial side. Indoors and dry it is a non-issue. Outdoors, on a roof, or in a washdown area, match the strut and the 1/4-20 hardware to the stainless clamp so the whole assembly is the same family.

The clamp measures .059 in height, 2.117 in length/depth, and 1.25 in width, and weighs .1 lb. The 1.25 in width is the figure to check against your strut channel and against the spacing of neighboring clamps if you are ganging several along one length of strut.