B-Line Eaton series strut pipe clamps and accessories, .081" height, 3.189" length, 1.25" width, Aluminum, Include combination recess hex head machine

The screw is included. Each B2004AL ships with a combination recess hex head machine screw in 1/4-20 thread, so you are not buying strut nuts and fasteners as a separate line item to mount the clamp. If your strut channel needs a spring nut or channel nut to receive that 1/4-20 screw, that is the one piece you would add.

1/4-20. The clamp is supplied with a 1/4-20 combination recess hex head machine screw, so the channel nut, spring nut, or tapped hole you land it in has to be 1/4-20 as well. If your job is standardized on 3/8-16 strut hardware, this clamp will not share that fastener stock.

It's aluminum. That matters on two counts: aluminum won't rust the way a plain steel clamp will in a damp mechanical room or outdoors, but aluminum in direct contact with copper tube is a dissimilar-metal pairing, so in wet or exterior locations use an isolating wrap or cushion between the clamp and the pipe. On dry interior runs it is not a practical concern.

Plan on 3.189 in of length and 1.25 in of width per clamp, with a stated height of .081 in. On a continuous strut run that 1.25 in width is the figure that decides how tight you can gang parallel lines before the clamp bodies touch.

No third-party certification is carried on the B2004AL; it's supplied as a plain aluminum strut pipe clamp with its 1/4-20 screw. On projects where a spec section calls for listed or labeled supports, this clamp will not satisfy that line and you should specify a support the engineer has approved as listed.

Order it as Eaton B-Line B2004AL. That's the manufacturer part number for the aluminum strut pipe clamp supplied with the 1/4-20 combination recess hex head machine screw. Distributors should quote it under that number rather than the generic B2004 family, since the AL suffix is what calls out aluminum instead of a steel body.