Knurled thumb screw M10 × 25
19 min1 part
Bolt and nut M8 × 30
3D printing2 partsNo supports
A printed M8 bolt with hex head and 30 mm of thread, plus a matching nut, both with the ISO metric profile. The pair suits jigs, prototypes and light fixings, and places where metal would rust or scratch – printed bolts are weaker than steel ones, so tighten them gently. Use it to find the right clearance for your printer: if the nut binds, increase it in the generator, if it wobbles, reduce it; the value is a good start for other sizes too.
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- Size
- 35.02 × 13 × 35.3 mm
- Print time
- ≈ 18 min
- Filament
- ≈ 2.4 g PLA
- Parts
- 2
Print settings
- Material
- PLA
- Layer height
- 0.12 mm
- Infill
- 40%
- Walls
- 3
- Supports
- none
Tip: Print as shown: bolt standing on its head, nut lying flat, no supports needed. A layer height of 0.12–0.16 mm makes the thread cleaner. Printed bolts break more easily than metal ones – don't tighten them hard.
Estimated by our slicer-like calculation for a 0.4 mm nozzle. Your slicer may show slightly different values.
Adjust it
- Thread: M8 × 1.25 mm
- Bolt: 30 mm thread, 35.3 mm overall
- Nut: 13 mm across flats, 6.8 mm high
- Thread Ø: bolt 7.8 mm, nut 8.2 mm (nominal 8 mm)
This model comes from the “Bolt and nut” generator. Open it there with these settings and change any size you like.
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