A hollow threaded rod has a bore along its length. A cable, a wire, an air line, or fluid passes through the bore. A nut or a fitting sits on the thread. The part is also sold as a hollow rod, a threaded hollow rod, or a hollow threaded stud.
A thread on the outside makes a hollow threaded stud. A thread inside the bore makes a hollow female threaded rod. A double-end rod has a thread at each end and a plain center. Profab Machine makes each rod to your drawing in metric or inch sizes, with left-hand thread when you need it. Rods come in 304, 316L, or 17-4PH stainless steel. Other grades are available on request.
Applications: Lamps and light fittings, machinery mounts that carry wires or air and fluid lines, and marine, chemical, and food equipment.
Because sizes differ from maker to maker, give the thread, the outside diameter, the bore, and the length on the order.
| Form | Thread and Bore | Typical Use |
|---|---|---|
| Externally threaded hollow rod | Thread on the outside, bore through the center | Fixing a fitting or a lamp while a cable or a line runs through |
| Hollow female threaded rod | Thread inside the bore | Connecting parts end to end, or fixing a fitting with a stud or bolt |
| Double-end hollow rod | Thread at both ends, plain center | Rods that take a nut or a fitting at each end |
| Custom hollow rod | Thread, outside diameter, bore, and length to drawing | Parts that a standard form does not cover |
Send a drawing, a DXF file, or a sample. Our engineers review the dimensions and the tolerance before cutting metal. We CNC machine the part ourselves, so you deal directly with the factory.
You set the bore, the outside diameter, the thread, and the length. We CNC machine the part to that drawing. The rod then arrives ready for your cable or line and your nut or fitting.
Salt, moisture, washdown chemicals, and load drive the choice between 304, 316L, and 17-4PH. We confirm the grade against your drawing before production. Tiered pricing is available on larger orders.
A hollow threaded rod is a threaded rod with a bore along its length. The bore lets a cable, a wire, an air line, or fluid pass through the rod.
A hollow threaded rod, or hollow threaded stud, has its thread on the outside. A hollow female threaded rod has its thread inside the bore. Say which one you need and send a sketch.
A rough bore edge can mark a cable. Tell us what runs through the rod and ask for a deburred bore. Then test the cable on a sample before a full run.
Choose 316L where the rod sees salt, chlorides, or chloride-based cleaning chemicals, because it resists pitting better than 304. Choose 304 for indoor, dry, or mildly humid service, where it costs less.
Send the thread size, pitch, and hand. Say whether the thread is outside or inside. Add the outside diameter, the bore, the length, the grade, and the quantity. A drawing or a sample speeds up the quote.
If you already have drawings, email them to [email protected].
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