OATEY 33989 3/4" x 10' Galvanized Interlocking Metal Hanger Strap – 28 Ga. – Bagged

For the strap itself, no. The interlocking design means the strap fastens back into itself, so you don't need nuts or bolts to close the loop around the pipe. You will still need your own fasteners, typically screws or nails, to attach the strap to the joist or framing member, since those are not part of the roll.

28 gauge is the light duty end of metal hanger strap. It suits residential and light commercial runs of copper, PEX, CPVC, and small diameter DWV, where the strap carries the pipe between structural attachment points. For large diameter cast iron, filled risers, or anything where you're carrying real weight, step up to a heavier gauge strap or a clevis hanger and rod instead. The galvanized coating on the 33989 is there for corrosion resistance in damp crawl spaces and basements.

Dissimilar metal contact between galvanized steel and copper can set up galvanic corrosion where moisture is present. The 33989 is galvanized steel strap, so on copper lines in damp locations the common trade practice is to isolate the pipe from the strap with tape or a plastic sleeve, or to use copper-coated or plastic strap instead. On dry interior runs it's routinely used directly.

One 10 foot roll yields multiple hangers. You cut off only the length each pipe needs, so how many you get depends on pipe diameter and how you're wrapping it. That's the practical advantage of roll strap over individual clamps for a property manager or maintenance crew doing scattered repairs, one part number covers a range of pipe sizes instead of stocking a clamp for each diameter.

Each bagged 10 foot roll runs about 0.567 lb, so it's a grab-and-go item. Stocking a case of them on a service van adds almost nothing to payload, which is why it's a common van stock item for plumbers doing repair and remodel work.