Long cylindrical rod with threads along its full length. Cut to specific lengths and paired with nuts, bolts or washers.
What the threaded rod does on a fire line, and how to specify it.
Nearly every hanger in this range hangs off a length of threaded rod. The rod carries the pipe load up to the anchor, and the nuts, washers and hanger body thread onto it to build the assembly. Get the rod right and the whole support is sound; get it wrong and the hanger above it is only as good as the rod it is threaded into.
The rod is cut to the length the assembly needs and threaded along its full length. Specify the length to the drawing and the thread to match the nuts and the anchor. Pair it with the matching hex nuts and washers from the same range so the threads and finish line up.
Carbon steel, electro-galvanized. The zinc layer protects the exposed thread, which is the part most likely to see damp air, so the rod does not seize or rust where it matters at the anchor.
Send the line with the rest of the assembly rather than as a single part. State the size against the pipe outside diameter it serves, the finish, and the count. Pair it with the matching threaded rod, nuts, washers and anchors from the same range, and flag whether the design needs the fire-rated, FM/UL marked version, so the support arrives with the pipe instead of chasing it later.
To the drawing. The rod is cut to the length the hanger assembly needs, with the thread running the full length.
The matching hex nuts, washers and bolts from the same range, and the anchor at the top of the run.
Carbon steel, electro-galvanized, to match the rest of the hanger line.
Selection guides and field notes on fire protection pipe, fittings and supports.
A fire sprinkler system can be perfect on the design paper and still fail in the field if the pipe is not held up properly. The pipe, the fittings, the valve, a…
Read →2026-09-30Pipe hanger spacing is the quiet part of a fire line spec. The hangers are there, the pipe is up, and nobody thinks about the interval again until the line star…
Read →2026-10-01An earthquake does not care about your sprinkler system. It shakes the building, the building moves, and the pipe moves with it. If the pipe swings far enough, …
Read →2026-10-03Nobody photographs the hangers on a fire line. Everybody inspects them. I have stood on site while an inspector ran a finger down the support schedule, then wal…
Read →2026-10-12An earthquake does not break a sprinkler pipe. It moves the building around the pipe. The joint that lets the pipe move a little, and the brace that stops it moving too much, are the two halves of the same system.
Read →Send your bill of materials or drawing — we confirm spec, cert and lead time, then ship the full package.
