B-Line Eaton series clevis hanger, Steel, Plain, 2" pipe size, 3/8"-16 rod size, Standard clevis hanger-felt lined for copper tubing

That is exactly what it is built for. The B3100F-2PLN is a standard clevis hanger with a felt lining, and the felt is there so copper tubing is not in direct contact with the steel hanger. It is sized for 2 inch pipe size.

It takes 3/8 inch-16 rod. If your trapeze or anchor layout is already run with 3/8-16 all-thread, this drops straight on; you will need two nuts to set the elevation at the clevis.

Two reasons. Bare steel against copper sets up galvanic corrosion at the support point, and rigid metal-to-metal contact transmits noise and lets the tube abrade as it expands and contracts. The felt liner in the B3100F sits between the steel hanger and the tube and handles both. On steel pipe you do not need the liner and a plain B-Line clevis hanger is the normal choice.

Yes, the B3100F series clevis hanger is UL/CUL listed, which is what inspectors look for when the hanger is supporting pipe in a listed assembly.

It is plain steel, meaning uncoated. That is fine for dry interior runs, but for exterior, damp, or corrosive areas you want a galvanized or electro-plated version of the same clevis hanger instead.

Allow for the hanger's 4.5 inch height plus the rod and nuts above it. The B3100F-2PLN measures 4.5 inches in both stated diameter and height, so in tight ceiling plenums check your clearance from the top of the pipe to the deck before you set anchor points.

No. The hanger ships as the clevis assembly with its cross bolt and nut only. The 3/8-16 threaded rod, the adjusting nuts at the hanger, and whatever anchor or beam attachment you are hanging from are all ordered separately.

Order it as B3100F-2PLN from Eaton B-Line. Each hanger weighs .53 lb, which matters when you are estimating a carton for a long run of hangers on a job.