Steel City RC 1 1/2 Beam Clamp

The Steel City RC clamp is the 1-1/2 inch size, so it is sized for a 1-1/2 inch flange or edge thickness capacity. If your structural steel flange is thicker or thinner than that, you need a different size in the RC family rather than this one.

Two finishes are offered: standard, ordered as RC 1 1/2, and hot-dip galvanized, ordered as RC-1 1/2HDG. For exterior steel, parking structures, tunnels, or damp industrial spaces, specify the HDG version. Indoor dry locations can take the standard finish.

The galvanized version is Steel City part number RC-1 1/2HDG. The plain, standard-finish version is RC 1 1/2. Those two part numbers are the only variations of the 1-1/2 inch RC clamp, so the finish is the single ordering decision.

No. The RC 1-1/2 is a non-rotatable clamp, so the hanger it carries is fixed in orientation rather than free to swing. If your run needs the attachment point to pivot, look for a swivel-type beam attachment instead.

That is exactly what a beam clamp is for. The RC 1-1/2 clamps onto an existing steel flange so you hang conduit, strut, or pipe without drilling or welding the structure, which is usually what the structural engineer and the building owner prefer. Match the clamp size to the flange you are gripping, here 1-1/2 inch.

Both are beam clamps for hanging loads from structural steel. The Steel City RC 1 1/2 is sized at 1-1/2 inch and is offered in a standard finish as RC 1 1/2 and in hot-dip galvanized as RC-1 1/2HDG. The Appleton IS-500 is a malleable iron clamp with a screw-type hexagonal head and a 1/4-20 tapped hole, so it accepts 1/4-20 threaded rod directly. If your hanger rod is 1/4-20, the IS-500 states that thread; the RC 1 1/2 is specified by its 1-1/2 inch size.

Not on finish. The Steel City RC-1 1/2HDG is the hot-dip galvanized version of the RC 1 1/2 beam clamp, which is the finish normally specified for exterior, damp, or corrosive steel. The Appleton IS-500 is described as a malleable iron screw-type clamp with a 1/4-20 tapped head, so it matches on clamp type rather than on a galvanized coating. For a job where the spec calls for hot-dip galvanized hardware, order the RC-1 1/2HDG.

The RC 1-1/2 beam clamp ships in an outer quantity of 50. For a large hanger layout that is useful to know when you are counting drops: one carton covers 50 support points.

The Steel City RC 1 1/2 beam clamp ships with an outer quantity of 50. If you want a larger single carton for a long run of hangers, the Kindorf FBC1 structural beam clamp is packaged 100 per pack. Both are beam clamps that attach hangers to structural steel; the difference here is carton quantity, not clamp function.