Atkore Allied Tube & Conduit SC150-ICRKON 1-1/2" EMT Set Screw Connector With Insulated Throat

Yes. The SC150-ICRKON is sized specifically for 1-1/2 inch EMT (electrical metallic tubing) and attaches with a set screw rather than a compression ring. It will not fit rigid or IMC conduit, and it will not fit other EMT trade sizes, so order the matching size for each run.

It does. The SC150-ICRKON is built with an insulated throat, so conductors bear on a smooth insulating surface instead of a bare steel edge as they enter the box. That is what many inspectors and specs call for on larger EMT runs where conductor insulation can be nicked during a pull.

The SC150-ICRKON is concrete tight when taped. The fitting itself is not rain tight or raintight-rated, so for a wet location or a direct-burial style application you want a compression (gland ring) connector instead. For a slab pour with the joint taped, the set screw connector is the normal, lower-cost choice.

On this size the screw is a pre-set, staked tri-head screw. Allied uses tri-head screws across the 1/2 inch through 2 inch connectors and switches to hex head screws on the 2-1/2 inch through 4 inch sizes. A tri-head takes a flat blade, a Phillips, or a square driver, so no special tool is needed on the 1-1/2 inch.

Set screw, like the SC150-ICRKON, is the standard for dry indoor work: exposed runs in mechanical rooms, above accessible ceilings, and inside walls, and it goes together faster. Compression is what you move to for wet or damp locations. The one overlap is concrete: a set screw connector is acceptable in a pour when the joint is taped, which this one is rated for.

Steel. Allied builds the SC150-ICRKON with heavy steel walls, which is what contractors and institutional specs usually call out over a die cast body on larger trade sizes because it stands up better to a hard pull and to being struck during rough-in.

The connector is furnished with its locknut for securing it through the enclosure knockout. What you supply on the job is the 1-1/2 inch EMT itself and, if the run is being poured, the tape at the joint to make it concrete tight.

Order it as Allied Tube & Conduit SC150-ICRKON. The SC prefix is the set screw connector line, 150 is the 1-1/2 inch trade size, and the ICR suffix identifies the insulated throat version. Matching sizes in the same family follow the same pattern, which makes it straightforward to spec one screw type and one throat treatment building-wide.