Steel City PC 1 1/4 Beam Clamp

Same beam clamp, different finish. The PC 1 1/4 is the standard finish version and the PC-1 1/4HDG is hot-dip galvanized. Use the HDG for outdoor, damp, or corrosive locations; the standard finish is for dry interior work.

The Appleton IS-500 is a malleable iron beam clamp with a screw-type hexagonal head, tapped 1/4-20, so it accepts 1/4-20 threaded rod off a beam flange the same way a PC-series beam clamp does. The Kindorf FBC1 is also a structural beam clamp built for 1/4-20 threaded rod. The Steel City PC 1 1/4 is offered in a standard finish and a hot-dip galvanized version, PC-1 1/4HDG, which is the one to specify for damp or exterior runs.

The PC 1 1/4 beam clamp carries an outer quantity of 25, so full-box buys come in 25-piece increments. That is a convenient count for a panel or lighting rough-in where you are hanging a run off structural steel.

For exposed steel outdoors, in parking structures, or in wash-down areas, order the PC-1 1/4HDG hot-dip galvanized version. The standard-finish PC 1 1/4 is for protected dry interior locations where corrosion is not a factor.

Two alternatives worth knowing: the Appleton IS-500 malleable iron beam clamp, a screw-type with a hexagonal head tapped 1/4-20, and the Kindorf FBC1 structural beam clamp, also for 1/4 inch-20 threaded rod and sold 100 to a pack. Both are tapped specifically for 1/4-20 rod, so if your hanger rod is 1/4 inch they drop straight in; the Kindorf pack of 100 suits larger repetitive runs.

A beam clamp is the no-drill option. It grips the flange of existing structural steel so you can hang conduit, strut, or fixtures without welding or drilling the member, which is usually what the structural engineer and the inspector prefer on existing steel. If you are supporting from concrete deck or masonry instead, a beam clamp has nothing to bite and you need an anchor or insert.

The Steel City PC 1 1/4 beam clamp ships in an outer quantity of 25. If you want a larger single pack, the Kindorf FBC1 structural beam clamp for 1/4-20 threaded rod is sold in a pack of 100. Both attach to a beam flange for threaded rod drops, so the choice comes down to pack size and the clamp body you want on the steel.

If the beam flange thickness is within the clamp's range and you are hanging 1/4-20 rod, the Appleton IS-500 screw-type hexagonal head clamp covers the same duty, tightened down with a wrench on the hex head rather than the PC-series clamp body. Confirm flange thickness against the PC 1 1/4 spec sheet before swapping, since clamp jaw opening is what decides the fit on a given beam.