Dowel pins, 2–6 mm (ISO 2338 / DIN 6325) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/dowel-pins-metric/  (CC BY 4.0)
Basis: ISO 2338 (h8) and DIN 6325 (m6) pin tolerances; fits per ISO 286
Catalog version: 2026-10-20

Sizes: see table below
- Press fit in a print: pin diameter − 0.05 mm (and print slightly undersize holes, then ream). Slip fit for a hinge: pin + 0.15–0.2 mm.
- Common lengths 6–40 mm; 1.5 × diameter chamfer on each end.

dia_mm  press_fit_hole_mm  slip_fit_hole_mm  common_lengths_mm
2  1.95  2.2  8, 10, 12, 16, 20
3  2.95  3.2  10, 12, 16, 20, 30
4  3.95  4.2  12, 16, 20, 30, 40
5  4.95  5.2  16, 20, 30, 40
6  5.95  6.2  20, 30, 40, 50

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- McMaster-Carr: Dowel pins (free STEP/IGES/STL per part, for your own design use; no redistribution) — STEP, IGES, STL, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/dowel-pins/
- Wikipedia: Dowel — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Dowel

Free files (CC BY 4.0, Xem Studio; STEP + STL, 23 parts): https://xemstudio.com/files/hardware/dowel-pins-metric/index.json
API: https://xemstudio.com/api/geometry?object=dowel-pins-metric