Printing threaded rods with the 3D Print Threaded Pin Generator

Difficulty: easy. Time: 2 minutes to design, 15-60 minutes to print. Method: 3D printing only.

A threaded pin is a bolt without the head: all thread, end to end. That makes it the raw material for adjustable feet, knob shafts, double-ended studs, lead screws for casual mechanisms, and fit checks for printed nuts and threaded holes. Hardware stores sell threaded rod in meter lengths of a few sizes; this tool prints exactly the diameter and length you need.

Presets follow ISO-style metric proportions, so a pin generated at M8 threads into the nuts from the Machine Screws + Nuts Generator and into standard-pitch printed holes designed around the same sizes. The preset readout shows the active diameter and pitch at a glance.

Open the 3D Print Threaded Pin Generator

What You'll Need

Any FDM 3D printer; tall pins benefit from a draft shield or slow speeds
PETG for working studs, PLA for prototypes and adjusters
A printed or metal nut in the matching size to verify the thread

Step 1 - Pick the thread

Open the tool and choose a metric preset; it sets the Thread Diameter and pitch together, and the info panel confirms both. M6 and up print reliably on a standard 0.4 mm nozzle; smaller threads are possible but fragile.

Step 2 - Set the length

Set Pin Length anywhere from 5 to 200 mm. You can also override Thread Diameter freely after picking a preset; the pitch scales with it, which is handy for matching an unusual existing part.

Step 3 - Export

Download STL or 3MF and slice; the pin exports upright, ready to print.

Choose Your Build Method

Print straight, usable threads

Print vertically as exported. Fine layers (0.12-0.16 mm) keep the thread profile smooth.
Tall thin pins wobble while printing: slow the speed, print two or three at once so the head moves between them, or add a brim.
Use 4 perimeters or solid infill; a threaded rod is often loaded in bending.
Chase the new pin through a nut a few times to burnish the thread before final use.
Remember vertical prints are weakest across layer lines; for high-bending applications keep pins short and thick.

Make It Yours

Adjustable leveling feet: threaded pin plus a printed knob foot for wobbly shop furniture.
Double-ended studs joining two threaded holes where a bolt head cannot fit.
A long M10 rod with two printed nuts becomes a quick clamping spreader for glue-ups.
Knob shafts: embed the pin in a printed star knob for jig hardware.
Thread gauges: print one pin per size as a go/no-go checker for tapped holes in prints.
Slow-motion lead screw for a printed linear slider or camera focus rig.
Combine with the Machine Screws + Nuts Generator and Washer Generator for an entirely printed fastener wall display.

Open the 3D Print Threaded Pin Generator

Monthly Updates