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Your choice: a print file (STL) for your own 3D printer – instant download – or ready-printed with shipping.

The bolt set on a wooden table
  • Image 1: The bolt set on a wooden table
  • Image 2: All bolts, nuts and washers

Images: 3D preview of the design

No. 29 · Hex bolts, nuts and washers in 5 sizes – print files

Bolt Set M8 to M20

  • Instant download (ZIP, 37 MB)
  • 25 files
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€2.90

Instant download · ZIP, 37 MB · No VAT charged pursuant to § 19 UStG

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Hex bolts in three lengths, plus nuts and washers for M8, M10, M12, M16 and M20 with metric coarse thread.

In the download

  • Schraube_M8x20 to Schraube_M20x100, Mutter_M8 to Mutter_M20, Scheibe_M8 to Scheibe_M20 as STL (German file names)
Sizes
M8, M10, M12, M16, M20
Lengths (shank)
M8: 20/30/40, M10: 25/35/50, M12: 30/40/60, M16: 40/60/80, M20: 50/70/100 mm
Wrench size
13 / 16 / 18 / 24 / 30 mm
Thread clearance
0.3 mm radial
Flank angle
60°, right-hand thread
Format
STL, 25 files

The model

For each size there are three bolts, one nut and one washer. The thread is a right-hand thread with the 60° profile of the metric coarse thread (pitch 1.25 / 1.5 / 1.75 / 2 / 2.5 mm). The nut has 0.3 mm clearance to the bolt thread so that it spins on easily after printing.

The bolts print head down on the print bed; nuts and washers lie flat. Edges at the bed are chamfered 0.4 mm, and the nuts have a lead-in chamfer at both ends.

Checked by calculation: each nut can be placed on the bolt thread in eight different rotational positions without the two parts intersecting. The washers pass freely over the thread. Printed bolts are not meant for load-bearing connections.

View print notes (German)

Print notes included in German; part names are self-explanatory.

You will need

  • 3D printer with a build height of at least 115 mm (for the longest bolt)
  • Filament, e.g. PETG or PLA

Printing

Orientation
bolts standing (head down), nuts and washers lying, as in the files
Supports
none
Thread
The thread flanks lie at 30° to the horizontal and need good part cooling
Print area
from 40 × 40 mm, height up to 113 mm depending on the bolt

Notes

  • How cleanly your printer handles the shallow thread flanks is untested. The fit is calculated, not tried.
  • The files are for your private use – print them as often as you like. You may not pass on, upload or sell the files themselves.

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