HexoParts technical standard
Anything the documentation does not specify is made to this standard:
- general tolerances ISO 2768-m for linear and angular dimensions, form and position tolerances only from the drawing,
- threads according to the drawing, without a stated class 6H or 6g,
- edges broken and deburred (chamfer approx. 0.2-0.5 mm),
- roughness Ra 3.2 µm on machined surfaces, tool marks permitted,
- no cosmetic requirements unless ordered,
- material as ordered, 3.1 certificate to EN 10204 on request (at extra cost),
- exactly the quantity ordered, parts packed against movement and corrosion.
How to specify threads and fits
- On the 3D model: click a hole in the preview or tick it in the list. Threads detected in the model are ticked by default.
- On the PDF drawing: internal and external threads, fits (e.g. H7), roughness and form tolerances.
- Choose a fit only for holes that mate with another part, e.g. a bearing or a pin. Every fit raises the machining cost.
Plastics do not hold ISO 286 fits. Describe critical dimensions of plastic parts on the drawing.